Near Earth Asteroids (NEAs)

A Chronology of Milestones - Page 3

1800 - 2200

7 October 2013 – Version 41.0
(completeness not pretended)

Introduction

 

Asteroids, or minor planets, are small and often irregularly shaped celestial bodies. The known majority of them orbit the Sun in the so-called main asteroid belt, between the orbits of the planets Mars and Jupiter. However, due to gravitational perturbations caused by  planets  as well as non-gravitational perturbations, a continuous migration brings main-belt asteroids closer to Sun, thus crossing the orbits of Mars, Earth, Venus and Mercury.

An asteroid is coined a Near Earth Asteroid (NEA) when its trajectory brings it within 1.3 AU [Astronomical  Unit; for units, see below in section Glossary and Units] from the Sun and  hence within 0.3 AU of the Earth's orbit. The largest known NEA is 1036 Ganymed (1924 TD, H = 9.45 mag, D = 31.7 km, Po = 4.34 yr).

NEA is said to be a Potentially Hazardous Asteroid (PHA)  when its orbit comes to within 0.05 AU (= 19.5 LD [Lunar Distance] = 7.5  million km) of the Earth's orbit, the so-called Earth Minimum Orbit  Intersection Distance (MOID), and has an absolute magnitude  H < 22 mag (i.e., its diameter D > 140 m). The largest known PHA is 4179 Toutatis (1989 AC, H = 15.3 mag, D = 4.6×2.4×1.9 km, Po = 4.03 yr).

As of 7 October 2013:

NEA detection summary  (PHAs in purple):

D (m) > 1000 1000 - 140 140 - 40 40 - 1 total
H (mag) < 17.75 17.75 - 22.0 22.0 - 24.75 > 24.75
N Estimated 966 ± 45 ~ 14,000 ~ 285,000 ...
N Observed 861 (155) 4,923 (1260) 2,614 1,909 10,307 (1415)
O/E 89 % ± 4 ~ 35 % ~ 1 %

 

Several  astronomical observatories, at one time or another, have carried out Near Earth Object (NEO) search  programs, e.g.:

  • Asiago  DLR Asteroid Survey (ADAS),  Italy/Germany
  • Campo  Imperatore Near Earth Object Survey (CINEOS),  Italy
  • Catalina Sky  Survey (CSS), USA
  • China NEO Survey / NEO Survey Telescope (CNEOS/NEOST)
  • European NEA  Search Observatories (EUNEASO)
  • EUROpean Near  Earth Asteroid Research (EURONEAR)
  • IMPACTON, Brasil
  • Japanese  Spaceguard Association (JSGA), Japan
  • La Sagra Sky  Survey (LSSS), Spain
  • Lincoln  Near-Earth Asteroid Research (LINEAR), USA
  • Lowell  Observatory Near-Earth Object Search (LONEOS),  USA
  • Near-Earth  Asteroid Tracking (NEAT), USA
  • Panoramic Survey Telescope And Rapid Response System (Pan-STARRS), USA
  • Spacewatch,  USA
  • Teide Observatory Tenerife Asteroid Survey (TOTAS), Spain
  • Wide-field Infrared Survey Explorer (WISE), USA.

Those observatories as well as many others have been, and/or are also actively participating in follow-up observations.

Currently the vast majority of NEA discoveries are being carried out by the Catalina Sky Survey near Tucson (AZ, USA), the LINEAR survey near Socorro (NM, USA), the  Pan-STARRS survey on Maui (HI, USA), and, until recently, the NEO-WISE survey of the Wide-field Infrared Survey Explorer (WISE).
A review of NEO surveys  is given by: Stephen Larson, 2007, in: A. Milani, G.B. Valsecchi & D. Vokrouhlický  (eds.), Proceedings IAU Symposium No. 236, Near  Earth Objects, our Celestial Neighbors: Opportunity and Risk, Prague (Czech  Republic) 14-18 August 2006 (Cambridge: CUP), p. 323, "Current NEO surveys."

The following chronology lists (a) data of known NEAs with past nominal Earth close approach distances d < 1.0 LD; (b) data of known NEAs with future nominal Earth close approach distances d < 10.0 LD and minimum close approach distances d < 1.0 LD; (c) milestones of NEO/NEA research. Information on categories (a) and (b) is quoted from the NASA JPL NEO Program Close Approach Tables for the period 1900  – 2200 A.D. as of 7 October 2013, available at <neo.jpl.nasa.gov/ca/>.

By listing in chronological order this broad selection of milestones on NEA research, an impression is offered of what has been done and what is being done in those fields.

Glossary and Units

 

Glossary

 

Amor asteroid

The Amor asteroids   are a group of near-Earth asteroids (NEAs) named after the asteroid 1221 Amor. They have orbital semi-major axes a > 1 AU and perihelium distance 1.0167 < q < 1.3 AU. They approach the orbit of the Earth from beyond, but do not cross it. Most Amors do cross the orbit of Mars. It is estimated that 32% of the total number of NEAs are Amors.

Apollo asteroid

The Apollo   asteroids are a group of near-Earth asteroids named after asteroid 1862 Apollo. They are Earth-crosser asteroids that have orbital semi-major axes greater than that of the Earth (a > 1 AU) and a perihelion distance q < 1.0167 AU. It is estimated that 62% of the total number of NEAs are Apollos.

Aten asteroid

The Aten asteroids   are a group of near-Earth asteroids, named after asteroid 2062 Aten. They have orbital semi-major axes a of less than 1 AU and aphelion distances Q > 0.9833. It is estimated that 6% of the total number of NEAs are Atens.

Interior to Earth Orbit (IEO)

IEO asteroids have a < 1 AU and Q < 0.983 AU and so never cross Earth's orbit.

Main-belt asteroid

The asteroid belt   is the region of the Solar System located roughly between the orbits   of the planets Mars and Jupiter. It is occupied by numerous irregularly shaped bodies called asteroids or minor planets. The asteroid belt   region is also termed the main belt to distinguish it from other   concentrations of minor planets within the Solar System.

MOID

Minimum Orbit Intersection Distance (see   Introduction)

NEA

Near Earth Asteroid (see Introduction)

NEO

Near Earth Object (asteroid, comet)

PHA

Potentially Hazardous Asteroid (see Introduction)

 

 

Units

 

1 Earth Radius (REarth)

6.37103 × 103 km = mean radius of the Earth

1 Lunar Distance (LD)

3.84401 × 105 km = 0.00257 AU = 60.34 REarth, the mean distance   from the Earth to the Moon

1 Astronomical Unit (AU)

1.495979 × 108 km = 389.17 LD, the mean distance   from the Earth to the Sun

H magnitude

V-band magnitude an asteroid would have at 1 AU distance from the Earth, viewed at opposition


Chronology: 2011 – 2880

Chronology 1801 – 2000 (page 1)
Chronology 2001 – 2010 (page 2)

2011, Jan 1

7560 NEAs known (ranging in size up to ~32 km: 1036 Ganymed, 1924 TD, H = 9.45 mag, D = 31.7 km), of which 1178 PHAs (ranging in size from 140 m up to ~5 km: 4179 Toutatis, 1989 AC, H = 15.3 mag, D = 4.6×2.4×1.9 km, PHA). See: <neo.jpl.nasa.gov/stats/>.

2011

On NATO and Space Situational Awareness, related to space weather, space debris and Near Earth Objects.

2011, Jan

G. Cordero, A. Poveda, 2011, Planetary and Space Science, 59, 10, "Curuça 1930: A probable mini-Tunguska?" See also item of 13 August 1930. See: <adsabs.harvard.edu/abs/2011P%26SS...59...10C>.

2011, Jan

J.L. Tonry, 2011, Publ. Astron. Soc. Pacific, 123, 58, "An early warning system for asteroid impact." See: <adsabs.harvard.edu/abs/2011PASP..123...58T>.
See also: <fallingstar.com/>, <www.space.com/8986-asteroid-threat-early-warning-system-proposed.html>, <www.space.com/9629-week-warning-asteroid-strike-simple-scientist.html>.

2011, Jan

J.  Žižka, D. Vokrouhlický, 2011, Icarus, 211, 511, "Solar radiation pressure on (99942) Apophis." See: <adsabs.harvard.edu/abs/2011Icar..211..511Z>.
See also: <content.usatoday.com/communities/sciencefair/post/2010/11/apophis-asteroid-2013/1>.

2011, Jan

G.S. Orton, L.N. Fletcher, P.W. Chodas, et al., 2011, Icarus, 211, 587, "The atmospheric influence, size and possible asteroidal nature of the July 2009 Jupiter impactor." See: <adsabs.harvard.edu/abs/2011Icar..211..587O>.

2011, Jan 3

Asteroid 2011 AE3 (H = 27.5 mag, D ≈ 10 m) passed Earth at a nominal miss distance of 1.59 LD. Minimum miss distance 0.00044 LD (= 0.027 REarth from the geocenter).
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2011+AE3&orb=1>.

2011, Jan 11

Asteroid 2011 AM37 (H = 29.7 mag, D ≈ 4 m) passed Earth at a nominal miss distance of 0.3 LD. Minimum miss distance 0.3 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2011+AM37+&orb=1>.

2011, Jan 17

Asteroid 2011 AN52 (H = 28.5 mag, D ≈ 7 m) passed Earth at a nominal miss distance of 0.8 LD. Minimum miss distance 0.8 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2011+AN52+&orb=1>.

2011, Jan 20

Asteroid 2011 BY10 (H = 27.3 mag, D ≈ 10 m) passed Earth at a nominal miss distance of 0.9 LD. Minimum miss distance 0.9 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2011+BY10+&orb=1>.

2011, Jan 24-26

Fourth NASA Small Bodies Assessment Group Meeting, Washington (DC, USA). See: <www.lpi.usra.edu/sbag/meetings/>, <www.lpi.usra.edu/sbag/meetings/jan2011/poster.pdf>, <www.lpi.usra.edu/sbag/meetings/jan2011/agenda.shtml>.
Some presentations:
- M.V. Sykes, 2011, "Science and exploration of small bodies in the solar system." See: <www.lpi.usra.edu/sbag/meetings/jan2011/presentations/day1/d1_1030_panel_charge.pdf>.
- J.A. Nuth, 2011, "Small body science issues." See: <www.lpi.usra.edu/sbag/meetings/jan2011/presentations/day2/d2_1345_Nuth.pdf>.
- Y. Fernandez, 2011, "Roadmap: population identification and characterization." See: <www.lpi.usra.edu/sbag/meetings/jan2011/presentations/day2/d2_1430_Fernandez.pdf>.
- T. Farnham, 2011, "EPOXI results and future proposals for the spacecraft." See: <www.lpi.usra.edu/sbag/meetings/jan2011/presentations/day3/d3_1300_Farnham.pdf>.
- M. Zolensky, 2011, "Hayabusa update." See: <www.lpi.usra.edu/sbag/meetings/jan2011/presentations/day3/d3_1330_Zolensky_Hayabusa.pdf>.

2011, Jan 25

Asteroid 2011 BW11 (H = 28.3 mag, D ≈ 8 m) passed Earth at a nominal miss distance of 0.3 LD. Minimum miss distance 0.3 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2011+BW11+&orb=1>.

2011, Jan 31

Asteroid 2011 CA4 (H = 27.0 mag, D ≈ 15 m) passed Earth at a nominal miss distance of 0.6 LD. Minimum miss distance 0.6 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2011+CA4&orb=1>.

2011, Jan 31

Press release Institute for Astronomy, University of Hawaii (HI, USA), 9 March 2011, "Hawaii astronomers keep tabs on asteroid Apophis." On January 31 University of Hawaii at Manoa astronomers used the UH 2.2-meter telescope on Mauna Kea to take the first new images in over three years of the potentially dangerous near-Earth asteroid Apophis as it emerged from behind the Sun.
See: <www.ifa.hawaii.edu/info/press-releases/Apophis2011Jan/>, <www.space.com/11094-watching-asteroid-apophis-photo.html>, <www.space.com/10047-collision-watch.html>.

2011, Feb

S.G. Djorgovski, A.J. Drake, A.A. Mahabal, in: T. Mihara & N. Kawai (eds.), The first year of MAXI: Monitoring Variable X-ray Sources, Proc. International Conference, Aoyama (Tokyo, Japan) 30 November - 2 December 2010 (Tokyo: JAXA Special Publication), "The Catalina Real-Time Transient Survey". See: <maxi.riken.jp/FirstYear/proceedings/procindex.html>.
The Catalina Sky Survey for NEO detection and tracking has as by-product the Catalina Real-time Transient Survey: watching for transient events among the background stars and galaxies. The CRTS has collected 20 billion brightness measurements of 198 million stars and other objects, i.e. an average of 100 brightness measurements for each one. The objects range from 12.5 to 20 mag and span an area of just over half the celestial sphere. See :
See also:
- A.J. Drake, S.G. Djorgovski, A. Mahabal, et al., 2012, in: R.E.M. Griffin, R.J. Hanisch, R. Seaman (eds.), New horizons in time-domain astronomy, Proc. IAU Symposium No. 285 (Cambridge: CUP), p. 306, "The Catalina Real-time Transient Survey." See: <adsabs.harvard.edu/abs/2012IAUS..285..306D >.
See also: <http://www.skyandtelescope.com/astronomy-news/vast-new-trove-of-variable-stars/>, <crts.caltech.edu/>, <nesssi.cacr.caltech.edu/DataRelease/>.

2011, Feb

S.-P. Gong, J.-F. Li, Y.-F. Gao, 2011, Research in Astronomy and Astrophysics, 11, 205, "Dynamics and control of a solar collector system for near Earth object deflection." See: <adsabs.harvard.edu/abs/2011RAA....11..205G>.

2011, Feb

T.V. Gudkova, Ph. Lognonné, J. Gagnepain-Beyneix, 2011, Icarus, 211, 1049, "Large impacts detected by the Apollo seismometers: impactor mass and source cutoff frequency estimations." See: <adsabs.harvard.edu/abs/2011Icar..211.1049G>.

2011, Feb

M.M. Marinova, O. Aharonson, E. Asphaug, 2011, Icarus, 211, 960, "Geophysical consequences of planetary-scale impacts into a Mars-like planet." See: <adsabs.harvard.edu/abs/2011Icar..211..960M>.

2011, Feb 1

NASA's NEOWISE (see 14 Dec 2009) mission completed its survey of asteroids and comets. The mission's discoveries of previously unknown objects include 20 comets, more than 33,000 main belt asteroids and 134 Near-Earth Asteroids.
Ref:
- A. Mainzer, J. Bauer, T. Grav, et al., 2011, Astrophysical Journal, 731, 53, "Preliminary results from NEOWISE: an enhancement to the Wide-field Infrared Survey Explorer for Solar System science." See: <adsabs.harvard.edu/abs/2011ApJ...731...53M>.
- A. Mainzer, T. Grav, J. Masiero, et al., 2012, Astrophysical Journal, 752, 110, "Characterizing subpopulations within the Near Earth Objects with NEOWISE: preliminary results." See: <adsabs.harvard.edu/abs/2012ApJ...752..110M>.
See also: <www.space.com/10735-asteroid-survey-space-rocks-comets.html>, <www.jpl.nasa.gov/news/news.cfm?release=2011-117&cid=release_2011-117&msource=11117&tr=y&auid=8164024>, <www.jpl.nasa.gov/video/index.cfm?id=935>, <www.jpl.nasa.gov/news/news.php?release=2013-257&cid=release_2013-257>.

2011, Feb 4

Asteroid 2011 CQ1 (H = 32.0 mag, D ≈ 1 m) passed Earth at a nominal miss distance of 0.031 LD (= 1.861 REarth = 11,854 km from the geocenter) over the mid-Pacific. Minimum miss distance 0.031 LD.
This object is the closest non-impacting object in the Minor Planet Center asteroid catalog to date. Prior to the Earth close approach, this object was in a so-called Apollo-class orbit that was mostly outside the Earth's orbit. Following the close approach, the Earth's gravitational attraction modified the object's orbit to an Aten-class orbit where the asteroid spends almost all of its time inside the Earth's orbit.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2011+CQ1+&orb=1>, <en.wikipedia.org/wiki/2011_CQ1>.
See: <neo.jpl.nasa.gov/news/news170.html>, <www.space.com/10927-asteroid-2011cq1-record-close-pass-earth.html>.

2011, Feb 4

February eta Draconids. A meteor outburst was detected in Cameras for Allsky Meteor Surveillance (CAMS) February 4 data, obtained at the Fremont Peak (Rick Morales, Loren Dynneson, et al.) and Mountain View (Peter Jenniskens) stations. This is the first new shower discovered by CAMS. It is also a very unusual shower, of a type that only occurs once or twice every sixty years and is caused by the dust trail of a (still to be discovered) Potentially Hazardous long-period Comet. The new shower was named the February eta Draconids and is now listed as shower 427 in the IAU Working List of Meteor Showers.
Ref:
-  P. Jenniskens, P.S. Gural, 2011, WGN, Journal of the International Meteor Organization,  39, 93, "Discovery of the February eta Draconids (FED, IAU#427): the dust trail of a potentially hazardous long-period comet." See: <www.imo.net/imo/wgn>.
See also: <cams.seti.org/FED.pdf>, <cams.seti.org/>, <cams.seti.org/CBET2763.txt>, <www.astro.amu.edu.pl/~jopek/MDC2007/Roje/roje_lista.php?corobic_roje=0&sort_roje=0>, <www.space.com/12450-unknown-comet-earth-threat-meteor-shower-evidence.html>.

2011, Feb 6

Asteroid 2011 CF22 (H = 30.9 mag, D ≈  2 m) passed Earth at a nominal miss distance of 0.105 LD. Minimum miss distance 0.098 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2011+CF22+&orb=1>.

2011, Feb 7

UN - Committee on the Peaceful Uses of Outer Space (UN-COPUOS), Information on research in the field of NEOs carried out by Member States, international organizations and other entities. See: <www.unoosa.org/pdf/limited/AC105_C1_2011_CRP12E.pdf>.

2011, Feb 8

C. Kazan, 2011, Daily Galaxy, 8 February 2011, "Tracking the realtime threat of near-Earth asteroids & comets – could it save the planet?" See: <www.dailygalaxy.com/my_weblog/2011/02/tracking-the-realtime-threat-of-near-earth-asteroids-will-it-save-the-planet.html>.

2011, Feb 9

Asteroid 2011 CA7 (H = 30.3 mag, D ≈ 3 m)  passed Earth at a nominal miss distance of 0.3 LD. Minimum miss distance 0.3 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2011+CA7+&orb=1>.
See also: <www.space.com/10800-car-size-asteroid-passing-earth.html>.

2011, Feb 14

NASA's Stardust-NExT spacecraft flew by comet Temple 1. See: <stardustnext.jpl.nasa.gov/>, <www.jpl.nasa.gov/asteroidwatch/newsfeatures.cfm?release=2011-053>, <http://stardustnext.jpl.nasa.gov/multimedia/popups/CometTempel1InContext.html>, <http://stardustnext.jpl.nasa.gov/multimedia/tempel1_conf2.html>, <http://www.jpl.nasa.gov/news/news.php?release=2011-094>, <http://stardustnext.jpl.nasa.gov/mission/LastDrop.html>.

2011, Feb 14

NASA announces Fiscal Year 2012 Budget. Funds for NEO observations would quadruple to US $20.4 million.See: <www.nasa.gov/news/budget/index.html>, <news.sciencemag.org/scienceinsider/2011/02/climate-science-asteroid-detection.html?ref=ra>.

2011, Feb 14-16

UN - Committee on the Peaceful Uses of Outer Space (UN-COPUOS) Scientific and Technical SubCommittee WG NEO and Action Team 14 on NEOs, chaired by Sergio Camacho (Mexico), meets in Vienna (Austria).
See: <www.unoosa.org/oosa/en/COPUOS/stsc/2011/index.html>, <www.unoosa.org/pdf/reports/ac105/AC105_987E.pdf>.
Statements:
Thomas D. Jones, chair, ASE Committee on Near-Earth Objects, Statement by the Association of Space Explorers;
Technical presentations:
- A. Grovas (Mexico), "First scientific light of the GMT, millimetric telescope", <www.oosa.unvienna.org/pdf/pres/stsc2011/tech-32.pdf>;
- W. Ailor (IAA), "Planetary Defense Conferences: sharing information on NEO threats and mitigation", <www.oosa.unvienna.org/pdf/pres/stsc2011/tech-36.pdf>;
- T. Jones (ASE), "Results from the Near-Earth Objects Mission Planning and Operations Group workshop", <www.oosa.unvienna.org/pdf/pres/stsc2011/tech-38.pdf>;
- D. Yeomans (USA), "Spaceguard program", <www.oosa.unvienna.org/pdf/pres/stsc2011/tech-42.pdf>;
- T. Yamada (Japan), "Dawn of the age of solar system exploration – Hayabusa, Ikaros, and future ", <www.oosa.unvienna.org/pdf/pres/stsc2011/tech-45.pdf>;
- B. Shustov (Russian Federation), "Towards national near-Earth objects program", <www.oosa.unvienna.org/pdf/pres/stsc2011/tech-47.pdf>.

2011, Feb 15

P. Tanga, 2011, in: C. Turon, F. Meynadier & F. Arenou (eds.), Proc. Interational Conference Gaia: at the frontiers of astrometry, 7-11 June 2010, Sèvre (France), ESA Publication Series, 45, 225, "Solar System science: Gaia and other forthcoming surveys." See: <adsabs.harvard.edu/abs/2011EAS....45..225T>, <wwwhip.obspm.fr/gaia2010/IMG/pdf/Abstract_booklet.pdf>, <www.eas-journal.org/index.php?option=com_article&access=doi&doi=10.1051/eas/1045038&Itemid=129>.

2011, Feb 18

R.A. Kerr, 2011a, Science, 331, 841, "NASA weighs asteroids: cheaper than Moon, but still not easy." See: <adsabs.harvard.edu/abs/2011Sci...331..841K>.

2011, Feb 18

R.A. Kerr, 2011b, Science, 331, 843, "A windfall for defenders of the planet." See: <adsabs.harvard.edu/abs/2011Sci...331..843K>.

2011, Feb 22

Open Global Community NEO Workshop Target NEO: Providing a resilient NEO accessibility program for human exploration beyond low Earth orbit, 22 February 2011, George Washington University, School of Media and Public Affairs, Washington, DC (USA).   See: <targetneo.jhuapl.edu/>, <www.space.com/11189-nasa-asteroid-choice-astronauts-deep-space.html>.
Some of the presentations: (see <http://targetneo.jhuapl.edu/archives/2011.php>)
- T. Jones, 2011, "NEO search reduces risk".
- T.B. Spahr, 2011, "Minor Planet Center, operations and update."
- D.K. Yeomans, 2011, "Precision NEO orbit prediction at JPL."
- J.S. Stuart, 2011, "Searching for asteroids."
- A. Mainzer, 2011, "Space-based NEO detection and tracking: NEOWISE and beyond."
- A.W. Harris, 2011, "NEO population."
- P. Michel, 2011, "Physical properties of NEOs from observations, and their influence for the design of a human mission.".
- L. Benner, 2011, "Arecibo and Goldstone radar characterization of NEO mission targets."
- J.A. Nuth, 2011, "Do we really understand the rocks that astronauts might be visiting."
- D.J. Scheeres, 2011, "Can Small, Fast Spinning Asteroids be Rubble Piles?."
- A. Cheng, 2011, "NEO orbit simulation approach."
- L. Jones, 2011, "NEO detection capabilities of LSST."
- K. Hibbard, 2011, "Near-Earth Survey Telescope (NEST). Human robotic precursor mission concept."
- A. Mainzer, 2011, "Next-generation space-based IR NEO surveys."
- R. R. Arentz, 2011, "A candidate NEO survey mission for affordable human spaceflight target assurance."

2011, Feb 23

Asteroid 2011 DU9 (H = 26.7 mag, D ≈  15 m) passed Earth at a nominal miss distance of 0.7 LD. Minimum miss distance 0.7 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2011+DU9&orb=1>.

2011, Feb 25

ESA selected four candidates for a medium-class mission within the Cosmic Vision programme that will launch in the period 2020-22 for an initial Assessment Phase study. Among these candidates is Marco Polo-R, a sample return mission to a Near Earth Asteroid.
See: <www.oca.eu/MarcoPolo-R/>.
Ref:
-  M.A. Barucci, M. Yoshikawa, P. Michel, et al., 2009, Experimental Astronomy, 23, 785, "Marco Polo: near earth object sample return mission." See: <adsabs.harvard.edu/abs/2009ExA....23..785B>;
- P. Michel, A. Barucci, D. Koschny, et al., 2009, in: Proc. 72nd Annual Meeting of the Meteoritical Society, 13-18 July 2009, Nancy (France), Meteoritics and Planetary Science Supplement, p.5261, "Marco Polo: a sample return mission to a primitive Near-Earth Object in assessment study in the ESA program Cosmic Vision 2015-2025." See: <adsabs.harvard.edu/abs/2009M%26PSA..72.5261M>;
- J. de León, T. Mothé-Diniz, J. Licandro, et al., 2011, Astronomy & Astrophysics, 530, id.L12, "New observations of asteroid (175706) 1996 FG3, primary target of the ESA Marco Polo-R mission." See:
<adsabs.harvard.edu/abs/2011A%26A...530L..12D>;
- M.A. Barucci, A.F. Cheng, P. Michel, et al., 2012, Experimental Astronomy, 33, 645, "Marco Polo-R near earth asteroid sample return mission." See: <adsabs.harvard.edu/abs/2012ExA....33..645B>.
- M.A. Barucci, P. Michel, A. Cheng, et al., 2012, LPI Contribution No. 1659, p.1457, "Marco Polo-R: Near Earth Asteroid sample return mission selected for ESA assessment study phase." See: <adsabs.harvard.edu/abs/2012LPI....43.1457B>.
- R.P. Binzel, D. Polishook, F.E. DeMeo, et al., 2012, LPI Contribution No. 1659, p.2222, "Marco Polo-R target asteroid (175706) 1996 FG3: possible evidence for an annual thermal wave." See: <adsabs.harvard.edu/abs/2012LPI....43.2222B>.
- A.S. Rivkin, E.S. Howell, F.E. DeMeo, et al., 2012, LPI Contribution No. 1659, p.1537, "New observations and proposed meteorite analogs of the Marco Polo-R target asteroid (175706) 1996 FG3." See: <adsabs.harvard.edu/abs/2012LPI....43.1537R>.
- K.J. Walsh, M. Delbo, M. Mueller, R.P. Binzel, F.E. DeMeo, 2012, Astrophysical Journal, 748, 104, "Physical characterization and origin of binary Near-Earth Asteroid (175706) 1996 FG3." See: <adsabs.harvard.edu/abs/2012ApJ...748..104W>.
- L.A.M. Benner, M. Brozovic, J.D. Giorgini, et al., 2012, American Astronomical Society, DPS meeting #44, #102.06, "Arecibo and Goldstone Radar Observations of binary Near-Earth Asteroid and Marco Polo-R mission target (175706) 1996 FG3." See: <adsabs.harvard.edu/abs/2012DPS....4410206B>.
- C. Lantz, E. Dotto, M.A. Barucci, et al., 2012, American Astronomical Society, DPS meeting #44, #215.02, "The European sample return mission MarcoPolo-R: understanding the nature of extraterrestrial primitive materials and tracing the origins." See: <adsabs.harvard.edu/abs/2012DPS....4421502L>.
See also:
<sci.esa.int/science-e/www/object/index.cfm?fobjectid=48467>, <smass.mit.edu/MarcoPolo/home.html>, <www.oca.eu/MarcoPolo-R/Workshops/WorkshopsMarcoPolo-R.html>.

2011, Feb 26

Asteroid 2011 AG5 (H = 21.8 mag, D ≈ 145 m, PHA) passed Earth at a nominal miss distance of 37.2 LD. Minimum miss distance 37.2 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2011+AG5&orb=1>, <en.wikipedia.org/wiki/2011_AG5>
See also: 3 February 2023, 4 February 2040.

2011, Feb 27

C.Y. Johnson, 2011, The Boston Globe, 27 February 2011, "Just another asteroid hurtling toward Earth ... ." See: <www.boston.com/news/science/articles/2011/02/27/>.

2011, Feb 28

T. Friend, 2011, The New Yorker, 28 February 2011, p. 22, "Vermin of the sky." See: <www.newyorker.com/reporting/2011/02/28/110228fa_fact_friend>.

2011, Mar

M. Delbò, K. Walsh, M. Mueller, A.W. Harris, E.S. Howell, 2011, Icarus, 212, 138, "The cool surfaces of binary near-Earth asteroids." See: <adsabs.harvard.edu/abs/2011Icar..212..138D>.

2011, Mar

S.K. Fieber-Beyer, M.J. Gaffey, P.A. Abell, 2011, Icarus, 212, 149, "Mineralogical characterization of near-Earth Asteroid (1036) Ganymed." See: <adsabs.harvard.edu/abs/2011Icar..212..149F>.

2011, Mar

M. Fischetti, 2011, Scientific American, 304, 80, "Death by asteroid." See: <www.nature.com/scientificamerican/journal/v304/n3/full/scientificamerican0311-80.html>.

2011, Mar

A.W. Harris, M. Mommert, J.L. Hora, et al., 2011, Astronomical Journal, 141, 75, "ExploreNEOs. II. The accuracy of the Warm Spitzer Near-Earth Object Survey." See: <adsabs.harvard.edu/abs/2011AJ....141...75H>.

2011, Mar

V. Reddy, A. Nathues, M.J. Gaffey, 2011, Icarus, 212, 175, "First fragment of asteroid 4 Vesta's mantle detected." The fragment is NEA (237442) 1999 TA10 (H = 17.9 mag, D ≈ 900 m). See: <adsabs.harvard.edu/abs/2011Icar..212..175R>.
See also: <www.mpg.de/877913/Pressrelease20110106>, <ssd.jpl.nasa.gov/sbdb.cgi?sstr=1999+TA10+&orb=1>, <en.wikipedia.org/wiki/(237442)_1999_TA10>.

2011, Mar 1

NASA's Mars Exploration Rover Opportunity has nearly completed its three-month examination of an impact crater on Mars informally named "Santa Maria", but before the rover resumes its overland trek, an orbiting camera has provided a color image of Opportunity beside Santa Maria. The High Resolution Imaging Science Experiment (HiRISE) camera on NASA's Mars Reconnaissance Orbiter acquired the image on March 1. Santa Maria crater is ~ 90 m in diameter. See: <http://www.jpl.nasa.gov/wise/newsfeatures.cfm?release=2011-072>.

2011, Mar 2

NASA established a network of smart cameras to keep a robotic vigil on the roughly 100 tons of meteoroids that slam into Earth every day. The cameras are operated by the NASA All-sky Fireball Network of the NASA Meteoroid Environment Office, established in October 2004. See: <fireballs.ndc.nasa.gov/>, <www.nasa.gov/offices/meo/home/aboutMEO-rd.html>, <www.space.com/11010-nasa-tracks-meteor-fireballs-robot-cameras.html>.

2011, Mar 3

Asteroid 2011 EN11 (H = 27.9 mag, D ≈  9 m) passed Earth at a nominal miss distance of 0.6 LD. Minimum miss distance 0.6 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2011+EN11+&orb=1>.

2011, Mar 4

ESA Space Science News, 4 March 2011, "The scars of impacts on Mars." See: <www.esa.int/esaSC/SEMTK5VTLKG_index_0.html>.

2011, Mar 7

Asteroid 2011 EY11 (H = 28.6 mag, D ≈  7 m) passed Earth at a nominal miss distance of 0.3 LD. Minimum miss distance 0.3 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2011+EY11+&orb=1>.

2011, Mar 7-11

42nd Lunar and Planetary Science Conference, 7-11 March 2011, The Woodlands (TX, USA). See: <www.lpi.usra.edu/meetings/lpsc2011/>.
Among the presentations:
- R.P. Binzel, F.E. DeMeo, M. Lockhart, et al., 2011, LPI Contribution No. 1608, p.2226, "Spectral reconnaissance for 200 Near-Earth Object mission targets." See: <adsabs.harvard.edu/abs/2011LPI....42.2226B>.
- F.E. DeMeo, R.P. Binzel, 2011, LPI Contribution No. 1608, p.2055, "SMASS-Next: A next generation asteroid spectroscopic survey." See: <adsabs.harvard.edu/abs/2011LPI....42.2055D>.

2011, Mar 8

Asteroid 2011 EM40 (H = 28.0 mag, D ≈ 9 m) passed Earth at a nominal miss distance of 0.6 LD. Minimum miss distance 0.6 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2011+EM40+&orb=1>.

2011, Mar 16

Asteroid 2011 EB74 (H = 26.9 mag, D ≈ 15 m) passed Earth at a nominal miss distance of 0.9 LD. Minimum miss distance 0.7 LD.
See: <http://ssd.jpl.nasa.gov/sbdb.cgi?orb=1&sstr=2011+EB74+>.
See also: <www.space.com/11145-small-asteroid-2011eb74-passing-earth.html>.

2011, Mar 30

J. Matson, 2011, Scientific American, 30 March 2011, "Which near-Earth asteroids are ripe for a visit?" See: <http://blogs.scientificamerican.com/observations/2011/03/30/which-near-earth-asteroids-are-ripe-for-a-visit/>.

2011, Mar-Apr

G.L. Matloff, M. Wilga, 2011, Acta Astronautica, 68, 599, "NEOs as stepping stones to Mars and main-belt asteroids." See: <adsabs.harvard.edu/abs/2011AcAau..68..599M>.

2011, Apr

M.W. Busch, S.J. Ostro, L.A.M. Benner, et al., 2011, Icarus, 212, 649, "Radar observations and the shape of Near-Earth Asteroid 2008 EV5." See: <adsabs.harvard.edu/abs/2011Icar..212..649B>.

2011, Apr

S.R. Chesley, 2011, Bulletin of the American Astronomical Society, 43, 2011, "Asteroid impact hazard assessment over Long time intervals." See: <adsabs.harvard.edu/abs/2011DDA....42.0601C>.

2011, Apr

M. Mueller, M. Delbò, J.L. Hora, et al., 2011, Astronomical Journal, 141, 109, "ExploreNEOs. III. Physical characterization of 65 potential spacecraft target asteroids." See: <adsabs.harvard.edu/abs/2011AJ....141..109M>.
See also: <www.scientificamerican.com/blog/post.cfm?id=which-near-earth-asteroids-are-ripe-2011-03-30>.

2011, Apr 5

A. Mann, 2012, Nature, 472, 16. "NASA human space-flight programme lost in transition." See: <www.nature.com/news/2011/110405/full/472016a.html>.

2011, Apr 6, 04:53

Asteroid 2011 GW9 (H = 28.1 mag, D ≈ 9 m) passed Earth at a nominal miss distance of 0.5 LD. Minimum miss distance 0.5 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2011+GW9+&orb=1>.
See also: 7 April 2097.

2011, Apr 6, 19:39

Asteroid 2011 GP28 (H = 29.4 mag, D ≈ 5 m) passed Earth at a nominal miss distance of 0.2 LD. Minimum miss distance 0.2 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2011+GP28+&orb=1>.

2011, Apr 7

E. Lu, 2011, Nature, 472, 28, "Deflect risky asteroids." Embedded in article "NASA: what now?" Nature, 472, 27-29. See: <adsabs.harvard.edu/abs/2011Natur.472R..28L>.

2011, Apr 10

A. Mainzer, J. Bauer, T. Grav, et al., 2011, Astrophysical Journal, 731, 53, "Preliminary results from NEOWISE: an enhancement to the Wide-field Infrared Survey Explorer for Solar System science." See: <adsabs.harvard.edu/abs/2011ApJ...731...53M>.
See also: <apod.nasa.gov/apod/ap111001.html>.

2011, Apr 15

R.E. Kerr, Science, 332, 302, "Asteroid model shows early life suffered a billion-year battering." Report on presentation at Lunar and Planetary Science Conference, 7-11 March 2011, The Woodlands (TX, USA). See: <www.sciencemag.org/content/332/6027/302.1.summary>.

2011, Apr 15

R.E. Kerr, Science, 332, 302, "Prime science achieved at asteroid." Report on Itokawa particles returned by Hayabusa, presented at Lunar and Planetary Science Conference, 7-11 March 2011, The Woodlands (TX, USA). See:
www.sciencemag.org/content/332/6027/302.2.summary>.

2011, Apr 15

Asteroid 2011 GP59 (H = 24.3 mag, D ≈ 50 m) passed Earth at a nominal miss distance of 1.4 LD. Minimum miss distance 1.4 LD. Prot ≈ 7.5 min and blinking.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2011+GP59+&orb=1>.
See also: <http://www.jpl.nasa.gov/news/news.php?release=2011-118>, <www.youtube.com/watch?v=O7wsAZNr56E>.

2011, May

O. Abramov, S.J. Mojzsis, 2011, Icarus, 213, 273, "Abodes for life in carbonaceous asteroids?" See: <adsabs.harvard.edu/abs/2011Icar..213..273A>.

2011, May

J. Fang, J.-L. Margot, M. Brozovic, et al., 2011, Astronomical Journal, 141, 154, "Orbits of Near-Earth Asteroid triples 2001 SN263 and 1994 CC: properties, origin, and evolution." See: <adsabs.harvard.edu/abs/2011AJ....141..154F>.
See also: <en.wikipedia.org/wiki/(136617)_1994_CC>.

2011, May

C.I. Fassett, S.J. Kadish, J.W. Head, et al., Geophysical Research Letters, 38(10), L10202, "The global population of large craters on Mercury and comparison with the Moon." See: <adsabs.harvard.edu/abs/2011GeoRL..3810202F>.

2011, May

S. Mouret, F. Mignard, 2011, Monthly Notices Royal Astronomical Society, 413, 741, "Detecting the Yarkovsky effect with the Gaia mission: list of the most promising candidates." See: <adsabs.harvard.edu/abs/2011MNRAS.413..741M>.

2011, May 5

NASA announces the selection of proposals for technology development, including NEOCam, an infrared telescope operating at the L1 Lagrange point to study the origin and evolution of NEOs and study the present risk of Earth-impact. It would generate a catalog of objects and accurate infrared measurements to provide a better understanding of small bodies that cross our planet's orbit. Amy Mainzer of JPL is principal investigator. NEOCam, a 50 cm diameter telescope operating at two heat-sensing infrared wavelengths will carry out a four year baseline survey to find 2/3 of the near-Earth objects larger than 140 m (large enough to cause major regional damage in the event of an Earth impact).  By using two heat-sensitive infrared imaging channels, NEOCam can make accurate measurements of NEO sizes and can gain valuable information about their composition, shapes, rotational states, and orbits.
See: <discovery.nasa.gov/news/index.cfml?ID=1034>, <neocam.ipac.caltech.edu/>.
See also: <blogs.discovermagazine.com/badastronomy/2012/06/28/privately-and-publicly-looking-for-earth-threatening-asteroids/>, <http://marsmobile.jpl.nasa.gov/news/whatsnew/index.cfm?FuseAction=ShowNews&NewsID=1121>, <neocam.ipac.caltech.edu/news/tracking-sensor-passes-test>.

2011, May 5

Asteroid 2011 JV10 (H = 29.7 mag, D ≈ 4 m) passed Earth at a nominal miss distance of 0.9 LD. Minimum miss distance 0.9 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2011+JV10+&orb=1>.
See also: 4 May 1931.

2011, May 9-12

2011 IAA Planetary Defense ConferenceFrom Threat to Action, Bucharest (Romania) 9-12 May 2011, sponsored by ESA, NASA and, inter alia, the IAU. See: <www.pdc2011.org/>, <www.nss.org/resources/library/planetarydefense/WhitePaper-2009PlanetaryDefenseConference.pdf>, <iaaweb.org/content/view/426/589/>,   <www.planetary.org/blog/article/00003026/>, <www.planetary.org/blog/article/00003028/>, <ieet.org/index.php/IEET/more/sandberg20110513>.
Presentations:
In Session 1:
- D. Morrison, "Historical overview of the cosmic impact hazard."
- R. Crowther, R. Tremayne-Smith, "Responding to the Near Earth Object (NEO) impact threat through appropriate policy initiatives."
- A.W. Harris, and the NEOShield Consortium, "A global approach to near-Earth object impact threat mitigation." See also: <elib.dlr.de/70019/>. Report on the international NEOShield project to address impact hazard mitigation issues, contained in a proposal to the European Commission FP7 Space Programme Call 2011, entitled Prevention of impacts from near-Earth objects on our planet.
In Session 2:
- A.W. Harris, 2011, "Update of estimated NEO population and current survey completion."
- D.K. Yeomans, A.B. Chamberlin, 2011, "Comparing the Earth impact flux from comets and near-Earth asteroids."
- R. Wainscoat, R. Jedicke, L. Denneau, et al., 2011, "The Pan-STARRS search for Near Earth Asteroids: present status and future plans."
- D. Hestroffer, D. Bancelin, W. Thuillot, P. Tanga, 2011, "Gaia Astrometry of Near-Earth Objects."
- A. Hildebrand, B. Gladman, E.F. Tedesco, et al., 2011, "The Near Earth Object Surveillance Satellite (NEOSSat) will search near-Sun along the ecliptic plane to efficiently discover objects of the Aten and Atira orbital classes."
- P.A. Abell, R.G. Mink, J.B. Garvin, et al., 2011, "A space-based Near-Earth Object Survey Telescope in support of human exploration, solar system science, and planetary defense."
In Session 3:
- P. Michel, 2011, "Physical properties of Near-Earth Objects that inform mitigation."
- A. Mainzer, J. Bauer, T. Grav, et al., 2011, "NEOWISE – an infrared view of NEOs and the solar system."
- L. Benner, L.A.M. Benner, 2011, "Radar tracking and Near-Earth Object characteristics."
- A. Milani, F. Bernardi, D. Farnocchia, G.B. Valsecchi, 2011, "1999 RQ36 impact risk and modeling the long-term Yarkovsky effect."
- S. Chesley, 2011, "Asteroid impact hazard assessment over long time intervals."
In Session 4:
- G. Longo, L. Gasperini, E. Bonatti, et al., 2011, "Consequences of the Tunguska impact and their interpretation."
- M.O. Mueller, 2011, "Creating awareness – the impact hazard in public education. Curricula content, students' interests and concepts and educational implementation."
- M. Boslough, 2011, "Airburst warning and response."
- G.R. Gisler, 2011, "Calculation of the impact of a small asteroid on a continental shelf."
- D. Isvoranu, S. Danaila, V. Badescu, 2011, "Dynamics of tsunamis generated by asteroid impact in the Black Sea."
- L. Ferrier, J.-L. Vérant, J.-M. Moschetta, et al., 2011, "The protective role of the Earth’s atmosphere against the threat of asteroids."
In Session 5:
- J.T. Grundmann, S. Mottola, M. Drentschew, et al., 2011, "AsteroidSquads/iSSB – a synergetic NEO deflection campaign and mitigation effects test mission scenario."
- A. Zimmer, E. Messerschmid, 2011, "Target selection and mission analysis of human exploration missions to near-earth asteroids."
- Y. Sugimoto, G. Radice, J.P. Sanchez, 2011, "Effects of NEO composition on deflection methodologies."
- C. Foster, J. Bellerose, D. Mauro, J. Belgacem, 2011, "Mission concepts and operations for asteroid mitigation involving multiple Gravity Tractors."
- N. Melamed, 2011, "Development of a handbook and an on-line tool on defending Earth against potentially hazardous objects."
- A. Galvez, I. Carnelli, 2011, "ESA asteroid mission studies: what have we learnt?"
- S. Wagner, B. Wie, 2011, "Robotic and human exploration/deflection mission design for asteroid 99942 Apophis."
- X. Zhang, C. Granier, E. Ball, L. Kochmanski, S.D. Howe, 2011, "Near Earth Object interception using nuclear thermal rocket propulsion."
In Session 6:
- K. Housen, K.A. Holsapple, 2011, "Measuring the momentum transfer for asteroid deflections."
- O. Golubov, Y.N. Krugly, 2011, "Influence of intermediate-scale structures on Yarkovsky and YORP effect."
- A. Klesh, T. Yoshimitsu, T. Kubota, 2011, "Improved navigation techniques for asteroid landers and impactors."
- J. Gil-Fernandez, R. Cadenas, T. Prieto, D. Escorial, 2011, "Design options for NEO missions."
- C.S. Plesko, R.P. Weaver, W.F. Huebner, 2011, "Numerical models of hazard mitigation by nuclear stand-off burst."
- M. Bruck, D.S.P. Dearborn, 2011, "Limits on the use of nuclear explosives for asteroid deflection."
- B. Wie, 2011, "Hypervelocity nuclear interceptors for asteroid deflection or disruption."
- J. Bellerose, C. Foster, D. Mauro, B. Jaroux, 2011, "Gravity tractor strategies for deflecting a binary asteroid system."
- V.P. Friedensen, P. Abell, B. Drake, 2011, "Meeting objectives for human exploration of Near-Earth Asteroids: first steps in understanding how to explore."
- C. Bombardelli, J. Peláez, E. Ahedo, et al., 2011, "The ion beam shepherd: a new concept for asteroid deflection."
In Session 7:
- A. Gibbings, J.-M. Hopkins, D. Burns, M. Vasile, 2011, "On testing laser ablation processes for asteroid deflection."
- M. Micheli, D.J. Tholen, G.T. Elliott, 2011, "Detecting radiation pressure on NEOs: the case of 2009 BD."
- C. Norlund, H.G. Lewis, P.M. Atkinson, J.Y. Guo, 2011, "NEOMiSS: A Near Earth Object decision support tool."
- D. Farnocchia, F. Bernardi, A. Milani, 2011, "The performances of a wide survey on a population of impactors."
- D. Bancelin, W. Thuillot, D. Hestroffer, 2011, "Near Earth Asteroids orbits from Gaia and ground-based observations."
- B. Kaplinger, B. Wie, D. Dearborn, 2011, "Nuclear fragmentation/dispersion modeling and simulation of hazardous Near-Earth Objects."
- N.K. Mishra, G. Patel, 2011, "Development of mission design process for collision avoidance of Near Earth Objects."
In Session 8:
- B.Shustov, Yu.Makarov, 2011, "Towards national NEO program."

2011, May 20

D. Bodewits, M. S. Kelley, J.-Y. Li, et al., 2011, Astrophysical Journal Letters, 733, L3, "Collisional excavation of asteroid (596) Scheila". Main-belt asteroid collision. See: <adsabs.harvard.edu/abs/2011ApJ...733L...3B>.
See also: <www.nasa.gov/topics/universe/features/asteroid-collision.html>, <svs.gsfc.nasa.gov/vis/a010000/a010700/a010747/>.

2011, May 20

D. Jewitt, H. Weaver, M. Mutchler, et al., 2011, Astrophysical Journal Letters, 733, L4, "Hubble Space Telescope observations of main-belt comet (596) Scheila." See: <adsabs.harvard.edu/abs/2011ApJ...733L...4J>.

2011, Jun

J. de Léon, T. Mothé-Diniz, T. Licandro, et al., 2011, Astronomy & Astrophysics, 530, L12, "New observations of asteroid (175706) 1996 FG3, primary target of the ESA Marco Polo-R mission." See: <adsabs.harvard.edu/abs/2011A%26A...530L..12D>.

2011, Jun

J.-B. Kikwaya, M. Campbell-Brown, P.G. Brown, 2011, Astronomy & Astrophysics, 530, A113, "Bulk density of small meteoroids." See: <adsabs.harvard.edu/abs/2011A%26A...530A.113K>.

2011, Jun

N. Pinter, A.C. Scott, T.L. Daulton, et al., 2011, Earth Science Reviews, 106, 247, "The Younger Dryas impact hypothesis: a requiem." See: <adsabs.harvard.edu/abs/2011ESRv..106..247P>, <www.sciencedirect.com/science/article/pii/S0012825211000262>.

2011, Jun

V. Reddy, A. Natheus, M.J. Gaffey, S. Schaeff, 2011, Planetary and Space Science, 59, 772, "Mineralogical characterization of potential targets for the ASTEX mission scenario." The ASTEX mission concept aims at in-situ surface characterization of two compositionally diverse NEAs, one with primitive and the other with a strong thermally evolved surface mineralogy. See: <adsabs.harvard.edu/abs/2011P%26SS...59..772R>.

2011, Jun

T. Turrini, G. Magni, A. Coradini, 2011, Monthly Notices Royal Astronomical Society, 413, 2439, "Probing the history of Solar system through the cratering records on Vesta and Ceres." See: <adsabs.harvard.edu/abs/2011MNRAS.413.2439T>.

2011, Jun

F. Usui, D. Kuroda, T.G. Mueller, 2011, Publications Astronomical Society of Japan, 63, 1117, "Asteroid catalog using AKARI/IRC Mid-infrared Asteroid Survey." 58 NEAs detected in survey of 5120 objects. See: <adsabs.harvard.edu/abs/2011PASJ...63.1117U>.

2011, Jun 1-10

UN - Committee on the Peaceful Uses of Outer Space (UN-COPUOS, 54th session) and Action Team 14 on NEOs, chaired by Sergio Camacho (Mexico), did meet in Vienna (Austria). See: <www.oosa.unvienna.org/oosa/en/COPUOS/index.html>.
Technical presentation:
- W. Ailor, 2011, Summary of the 2011 IAA Planetary Defense Conference. See: <www.oosa.unvienna.org/pdf/pres/copuos2011/tech-27.pdf>.

2011, Jun 2

Asteroid 2009 BD (H = 28.3 mag, D ≈ 8 m)  passed Earth at a nominal miss distance of 0.9 LD. Minimum miss distance 0.9 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2009+BD+&orb=1>.
Ref:
-  M. Micheli, D.J. Tholen, G.T. Elliott, 2012, New Astronomy,17, 446, "Detection of radiation pressure acting on 2009 BD." See: <adsabs.harvard.edu/abs/2012NewA...17..446M>.
- J. Foust, 2013, thespacereview.com, 22 April 2013, "To catch a planetoid." See: <www.thespacereview.com/article/2283/1>.

2011, Jun 8

First images from the ESO VLT Survey Telescope (VST). See: <www.eso.org/public/news/eso1119/>, <www.eso.org/public/teles-instr/surveytelescopes.html>.

2011, Jun 9-10

ESA Workshop Scientific and technological aspects of a sample return mission to a  Near Earth Asteroid: the ESA Cosmic Vision M3 mission MarcoPolo-R, ESA-ESRIN, Frascati (Italy).  MarcoPolo-R is a sample return mission to a NEA, selected by ESA as part of its Cosmic Vision M3 programme for an assessment study with launch in 2020-2022. See: <www.oa-roma.inaf.it/MarcoPolo-R/MarcoPolo-R/Home.html>.

2011, Jun 10

C.D.K. Herd, A. Blinova, D. Simkus, 201, Science, 332, 1304, "Origin and evolution of prebiotic organic matter as inferred from the Tagish Lake Meteorite." See: <www.sciencemag.org/content/332/6035/1304.abstract?sid=22a6dae6-2ea2-4c33-a0a6-5937339f249b>.

2011, Jun 13-16

Workshop on Very Wide Field Surveys in the Light of Astro2010, Baltimore (MD, USA). See: <widefield2011.pha.jhu.edu/>, <www.stsci.edu/institute/conference/verywidefield>.

2011, Jun 15

B. Schmitz, P.R. Heck, C. Alwmark, et al., 2011, Earth and Planetary Science Letters, 306 (3-4), 149, "Determining the impactor of the Ordovician Lockne crater: oxygen and neon isotopes in chromite versus sedimentary PGE signatures." See: <adsabs.harvard.edu/abs/2011E%26PSL.306..149S>.

2011, Jun 27

C.A.L. Bailer-Jones, 2011, Monthly Notices Royal Astronomical Society, 416, 1163, "Bayesian time series analysis of terrestrial impact cratering." See: <adsabs.harvard.edu/abs/2011MNRAS.416.1163B>. See also: <www.spacedaily.com/reports/Earth_Impacts_More_Likely_in_the_Past_or_Present_999.html>.

2011, Jun 27, 17:00

Asteroid 2011 MD (H = 28.1  mag, D ≈ 9 m) passed  Earth at a nominal miss distance of 0.0485 LD (= 2.928 REarth from the geocenter, = 18,653 km from the geocenter, = 12,282 km from the Earth surface). Minimum miss distance 0.0485 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2011+MD+&orb=1>, <en.wikipedia.org/wiki/2011_MD>.
See also: <neo.jpl.nasa.gov/news/news172.html>, <www.space.com/12067-asteroid-2011-md-close-earth-flyby-june-27.html>, <www.space.com/12086-asteroid-2011-md-buzzes-earth-pictures.html>, <web.mit.edu/newsoffice/2011/3q-2011md-binzel-0626.html>, and 18 June 2086.

2011, Jul

A. Christou, D.J. Asher, 2011, Monthly Notices Royal Astronomical Society, 414, 2965, "A long-lived horseshoe companion to the Earth." On asteroid 2010 SO16 (H = 20.6 mag, D ≈ 250 m, PHA) and its horseshoe orbit. See: <adsabs.harvard.edu/abs/2011MNRAS.414.2965C>. 
See also: <www.arm.ac.uk/press/2011/aac_horseshoe_orbit.html>, <star.arm.ac.uk/highlights/2011/574.html>, <www.technologyreview.com/blog/arxiv/26608/>, <http://www.jpl.nasa.gov/wise/newsfeatures.cfm?release=2011-112>, <www.nasa.gov/mission_pages/WISE/news/wise20110408.html>, <en.wikipedia.org/wiki/2010_SO16>.

2011, Jul

R. Duffard, K. Kumar, S. Pirrotta, et al., 2011, Advances in Space Research, 48, 120, "A multiple-rendezvous, sample-return mission to two near-Earth asteroids." Proposal of a dual-rendezvous mission, targeting NEAs, including sample-return. The proposed mission, Asteroid Sampling Mission (ASM), comprises flyby and remote sensing of a Q-type asteroid, and sampling of a V-type asteroid. See: <adsabs.harvard.edu/abs/2011AdSpR..48..120D>.

2011, Jul

C.W. Hergenrother, R. J. Whiteley,  2011, Icarus, 214, 194, "A survey of small fast rotating asteroids among the near-Earth asteroid population." See: <adsabs.harvard.edu/abs/2011Icar..214..194H>.

2011, Jul

M. Le Feuvre, M.A. Wieczorek, M.A., 2011, Icarus, 214, 1, "Non-uniform cratering of the Moon and a revised crater chronology of the inner Solar System." See: <adsabs.harvard.edu/abs/2011Icar..214....1L>.

2011, Jul

C. Magri, E.S. Howell, M.C. Nolan, et al, 2011, Icarus, 214, 210, "Radar and photometric observations and shape modeling of contact binary near-Earth asteroid (8567) 1996 HW1." See: <adsabs.harvard.edu/abs/2011Icar..214..210M>.

2011, Jul

O. Vaduvescu, A. Tudorica, M. Birlan, et al., 2011, Astronomische Nachrichten, 332, 580, "Mining the CFHT Legacy Survey for known Near Earth Asteroids." See: <adsabs.harvard.edu/abs/2011AN....332..580V>.

2011, Jul

X.-Y. Zeng, H. Baoyin, J.-F. Li, et al., 2011, Research in Astronomy and Astrophysics, 11(7), 863, "New applications of the H-reversal trajectory using solar sails." See: <adsabs.harvard.edu/abs/2011RAA....11..863Z>.

2011, Jul 6

S. Siregar, 2011, arXiv:1107.1024, "Will 3552 Don Quixote [PHA] escape from the Solar System?" See: <adsabs.harvard.edu/abs/2011arXiv1107.1024S> <personal.fmipa.itb.ac.id/suryadi/files/2012/01/SEAAN2012_p5_Suryadi_ed.pdf>, <ssd.jpl.nasa.gov/sbdb.cgi?sstr=3552+Don+Quixote+&orb=1>
See also: ITB Journal of Science, 43A (3), 187; <www.universetoday.com/87348/3552-don-quixote-leaving-our-solar-system/>, <en.wikipedia.org/wiki/3552_Don_Quixote>.

2011, Jul 11

Anton M.J. (Tom) Gehrels (1925 - 2011, Netherlands/USA), founder of the Spacewatch project, passed away.
See:  <uanews.org/node/40649>, <www.skyandtelescope.com/news/125432648.html>, <azstarnet.com/news/local/govt-and-politics/article_1702e3a9-fc0c-50f0-adf1-f84c5b0abf3b.html>, <www.nature.com/news/2008/080625/full/4531164a.html>, <adsabs.harvard.edu/abs/1988gsaa.book.....G>, <uanews.org/node/16265>, <www.lpl.arizona.edu/calendar/calendar.php?ID=457>, <en.wikipedia.org/wiki/Tom_Gehrels>. 
See also: 1980.

2011, Jul 14

R. Cowen, 2011, Nature, 475, 147, "Dawn nears Vesta." See: <adsabs.harvard.edu/abs/2011Natur.475..147C>.

2011, Jul 16

NASA spacecraft Dawn, launched 27 September 2007 with German (DLR, MPS) and Italian (ASI-INAF) instrumentation,  reached main-belt asteroid 4 Vesta (H = 3.20 mag, D = 530 km) and will orbit it at an altitude of 650 - 200 km for one year, to map 80 % of the asteroid's surface. Departure from Vesta on 5 September 2012 with destination dwarf planet (former main-belt asteroid) 1 Ceres (H = 3.34 mag, D = 952 km) in April 2015.
Ref:
- C.T. Russell, C.A. Raymond, A. Coradini, et al., 11 May 2012, Science, 336, 684, "Dawnat Vesta: testing the protoplanetary paradigm." See: <adsabs.harvard.edu/abs/2012Sci...336..684R>.
- R. Jaumann, D.A. Williams, D.L. Buczkowski, et al., 11 May 2012, Science, 336, 687, "Vesta's shape and morphology." See: <adsabs.harvard.edu/abs/2012Sci...336..687J>.
- S. Marchi, H.Y. McSween, D.P. O'Brien, et al., 11 May 2012, Science, 336, 690, "The violent collisional history of asteroid 4 Vesta." See: <adsabs.harvard.edu/abs/2012Sci...336..690M>.
- P. Schenk, D.P. O'Brien, S. Marchi, et al., 2012, Science, 336, 694, "The geologically recent giant impact basins at Vesta’s South Pole." See: <www.sciencemag.org/content/336/6082/694.full>.
- M.C. De Sanctis, E. Ammannito, M.T. Capria, et al., 11 May 2012, Science, 336, 697, "Spectroscopic characterization of mineralogy and its diversity across Vesta." See: <adsabs.harvard.edu/abs/2012Sci...336..697D>.
- V. Reddy, A. Nathues, L. Le Corre, et al., 11 May 2012, Science, 336, 700, "Color and albedo heterogeneity of Vesta from Dawn." See: <adsabs.harvard.edu/abs/2012Sci...336..700R>.
- C.T. Russell, C.A. Raymond, R. Jaumann, et al.,  April 2013, Meteoritics & Planetary Science, Online Early, "Dawn completes its mission at 4 Vesta." See: <adsabs.harvard.edu/doi/10.1111/maps.12091>.
See also: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=4+Vesta+&orb=1>, <dawn.jpl.nasa.gov/>, <antwrp.gsfc.nasa.gov/apod/ap060820.html>, <http://www.jpl.nasa.gov/wise/newsfeatures.cfm?release=2010-330>, <http://www.jpl.nasa.gov/wise/newsfeatures.cfm?release=2011-075>, <www.nasa.gov/mission_pages/dawn/news/dawn20110329.html>, <http://www.jpl.nasa.gov/news/news.php?release=2011-100>, <http://www.jpl.nasa.gov/news/news.php?release=2011-130>, <http://www.jpl.nasa.gov/news/news.php?release=2011-138>, <http://www.jpl.nasa.gov/news/news.php?release=2011-179>, <http://www.jpl.nasa.gov/news/news.php?release=2011-192>, <http://www.jpl.nasa.gov/news/news.php?release=2011-206>, <http://www.jpl.nasa.gov/news/news.php?release=2011-208>, <http://www.jpl.nasa.gov/news/news.php?release=2011-212>, <http://www.jpl.nasa.gov/news/news.php?release=2011-213>, <http://www.jpl.nasa.gov/news/news.php?release=2011-221>, <http://www.jpl.nasa.gov/news/news.php?release=2011-232>, <http://www.jpl.nasa.gov/news/news.php?release=2011-235>, <www.jpl.nasa.gov/video/index.cfm?id=1009>, <http://www.jpl.nasa.gov/news/news.php?release=2011-250>, <http://www.jpl.nasa.gov/news/news.php?release=2011-293>, <http://www.jpl.nasa.gov/news/news.php?release=2011-307>, <http://www.jpl.nasa.gov/news/news.php?release=2011-317>, <http://www.jpl.nasa.gov/wise/newsfeatures.cfm?release=2011-319>, <http://www.jpl.nasa.gov/news/news.php?release=2011-366>, <http://www.jpl.nasa.gov/news/news.php?release=2011-375>, <http://www.jpl.nasa.gov/wise/newsfeatures.cfm?release=2011-384>, <http://www.jpl.nasa.gov/news/news.php?release=2011-391>, <www.nasa.gov/mission_pages/dawn/multimedia/gallery-index.html>, <http://www.jpl.nasa.gov/news/news.php?release=2012-024>, <http://www.jpl.nasa.gov/news/news.php?release=2012-082>, <http://www.jpl.nasa.gov/news/news.php?release=2012-107>, <http://www.jpl.nasa.gov/news/news.php?release=2012-117>, <http://www.jpl.nasa.gov/news/news.php?release=2012-132>, <www.space.com/15574-asteroid-vesta-dawn-spacecraft.html>, <www.space.com/15641-asteroid-vesta-protoplanet-jupiter.html>, <http://www.jpl.nasa.gov/news/news.php?release=2012-156>, <www.space.com/17119-nasa-dawn-asteroid-spacecraft-vesta.html>,
<www.dlr.de/dlr/en/desktopdefault.aspx/tabid-10081/151_read-4916/year-all/>, <http://www.jpl.nasa.gov/news/news.php?release=2012-271>, <http://www.jpl.nasa.gov/news/news.php?release=2012-277>, <www.jpl.nasa.gov/news/news.php?release=2012-284&cid=release_2012-284>, <apod.nasa.gov/apod/astropix.html>, <http://www.jpl.nasa.gov/news/news.php?release=2012-297>, <http://www.jpl.nasa.gov/news/news.php?release=2012-301>, <http://www.jpl.nasa.gov/news/news.php?release=2012-304>, <www.space.com/18022-asteroid-vesta-magnetic-field.html>, <www.space.com/18299-asteroid-vesta-dark-carbon-impacts.html>, <http://www.jpl.nasa.gov/news/news.php?release=2012-342>, <http://www.jpl.nasa.gov/news/news.php?release=2012-389>, <http://www.jpl.nasa.gov/news/news.php?release=2013-001>, <www.lpi.usra.edu/sbag/meetings/jan2013/presentations/sbag8_presentations/TUES_1315_Raymond_SBAGJan2013_Dawn.pdf>, <www.dlr.de/dlr/en/desktopdefault.aspx/tabid-10081/151_read-8172/year-all/#gallery/12276>, <http://www.jpl.nasa.gov/news/news.php?release=2013-293>, <en.wikipedia.org/wiki/4_Vesta>.

2011, Jul 18

Morocco Fireball seen 18 July 2011 over Tata (Morocco). The fireball yields rare Mars meteorites. See: <blogs.nature.com/news/2012/01/morocco-fireball-yields-rare-mars-meteorite.html>, <www.space.com/14268-rare-mars-meteorite-rocks-tissint.html>, <www.space.com/20426-mercury-meteorite-discovery-messenger.html>, <www.space.com/20547-mercury-meteorite-mystery-age.html>.

2011, Jul 22

Kelly Beatty, 2011, Sky & Telescope, 22 July 2011, "Massive meteorite found in China." A massive space rock – one that could rank as one of the largest meteorites ever recovered – has been found in the Altai Mountains of Xinjiang Uygur province in northwest China, at an altitude of 2900 m. The large brown iron-nickel meteorite juts out from beneath a larger granite slab and the portion above ground measures about 2.3 m long and half as wide. The meteorite's mass could range between 25 to 30 tons, which would make it one of the largest meteorites known. If so, this space rock would surpass the current largest one in China, a 28-ton meteorite that was discovered in 1898 in the same region. See:  <www.space.com/12416-giant-meteorite-china-discovery.html>.

2011, Jul 24

Asteroid 2011 PU1 (H = 25.1 mag, D ≈ 35 m) passed Earth at a nominal miss distance of 0.9 LD. Minimum miss distance 0.9 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2011+PU1+&orb=1>.
See also: 26 July 1997.

2011, Jul 28

M. Connors, P. Wiegert, C. Veillet, 28 July 2011, Nature, 475, 481, "Earth's Trojan asteroid". See: <adsabs.harvard.edu/abs/2011Natur.475..481C>, <www.nature.com/nature/journal/v475/n7357/full/nature10233.html>.
During NASA's WISE mission the first "Trojan" asteroid sharing Earth's orbit: 2010 TK7 (NEO, H = 20.6 mag, D ≈ 300 m) was discovered, liberating around the leading Lagrange triangular point, L4. Its orbit is stable over at least ten thousand years. 
See also: 
<blogs.nature.com/news/2011/07/astronomers_spot_earths_first.html>, <http://www.jpl.nasa.gov/news/news.php?release=2011-230>, <www.nasa.gov/multimedia/videogallery/index.html?media_id=103550791>, <neo.jpl.nasa.gov/news/news173.html>, <www.space.com/12443-earth-asteroid-companion-discovered-2010-tk7.html>, <www.time.com/time/health/article/0,8599,2085982,00.html>, <www.floridatoday.com/article/20121130/COLUMNISTS0404/311300013/Stargazing-Asteroid-s-near-Earth-encounter-just-days-away>.
Additional literature:
- M.G. Connors, P. Wiegert, C. Veillet, 2011, in: American Geophysical Union, Fall Meeting 2011, abstract #P23C-1727, "Discovery of an Earth Trojan Asteroid." See: <adsabs.harvard.edu/abs/2011AGUFM.P23C1727C>.
- R. Dvorak, C. Lhotka, L. Zhou, May 2012, Astronomy & Astrophysics, 541, 127, "The orbit of 2010 TK7. Possible regions of stability for other Earth Trojan asteroids." See: <adsabs.harvard.edu/abs/2012A%26A...541A.127D>.

2011, Jul 28

Asteroid 2011 OD18 (H = 26.5 mag, D ≈ 20 m) passed Earth at a nominal miss distance of 0.4 LD. Minimum miss distance 0.4 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2011+OD18+&orb=1>.

2011, Aug

J.M. Houtkooper, 2011, Planetary and Space Science, 59, 1107, "Glaciopanspermia: Seeding the terrestrial planets with life?"  See: <adsabs.harvard.edu/abs/2011P%26SS...59.1107H>.

2011, Aug

L.B.S. Pham, Ö. Karatekin, V. Dehant, 2011, Planetary and Space Science, 59, 1087, "Effects of impacts on the atmospheric evolution: comparison between Mars, Earth, and Venus." See: <adsabs.harvard.edu/abs/2011P%26SS...59.1087P>.

2011, Aug

J. Tóth, P. Vereš, L. Kosnoš, 2011, Monthly Notices Royal Astronomical Society, 415, 1527, "Tidal disruption of NEAs –  a case of Příbram meteorite." See: <adsabs.harvard.edu/abs/2011MNRAS.415.1527T>.

2011, Aug 8-12

74th Annual Meeting of the Meteoritical Society, London (UK),  8-12 August 2011. See: <www.lpi.usra.edu/meetings/metsoc2011/>.

2011, Aug 22-24

International Primitive Body Exploration Working Group 2011, Workshop, California Institute of Technology, Pasadena (CA, USA). See: <ipewg.caltech.edu/>.
Among the presentations:
- L. Johnson, 2011, "Planetary defense activities at NASA Science Mission Directorate." See: <ipewg.caltech.edu/IPEWG_Released_Presentations/>.
- T. Jones, 2011, "A synergistic strategy for robotic and human NEO exploration." See: <ipewg.caltech.edu/IPEWG_Released_Presentations/>.
- D. Koschny, G. Drolshagen, 2011, "The Near-Earth Object segment of ESA’s Space Situational Awareness programme (SSA-NEO)." See: <ipewg.caltech.edu/IPEWG_Released_Presentations/>.
- E. Kürt, J. Biele, 2011, "Present and future exploration of primitive bodies at the German Aerospace Center." See: <ipewg.caltech.edu/IPEWG_Released_Presentations/DLR%20ipewg2011.ppt>.
- T.M. Randolph, 2011, "NEO Surveyor." See: <ipewg.caltech.edu/IPEWG_Released_Presentations/NEO%20Surveyor.pptx>.
- JHU/APL, a joint study with GSFC and JSC, 2011, "Near Earth Survey Telescope." See: <ipewg.caltech.edu/IPEWG_Released_Presentations/NEST_IPEWG_2011.pptx>.

2011, Aug 23

N. Atkinson, 2011, Universe Today, 23 August 2011, "Human mission to an asteroid: why should NASA go?" See: <www.universetoday.com/88384/human-mission-to-an-asteroid-why-should-nasa-go/>.

2011, Aug 23

M.P. Callahan, K.E. Smith, H.J. Cleaves, et al., 2011, Proc. National Academy of Sciences of the U.S.A., 108, 13995, "Carbonaceous meteorites contain a wide range of extraterrestrial nucleobases." See: <www.pnas.org/content/108/34/13995.full.pdf+html?sid=ebf88fed-799c-46cc-925f-93bf24de94fc>.
See also: <www.gl.ciw.edu/news/did_life_on_earth_get_its_start_from_meteorites>.

2011, Aug 24

H.-X. Baoyin, Y. Chen, J.-F. Li, 2011, Research in Astronomy and Astrophysics (Chinese Journal of Astronomy and Astrophysics), 10, 587, "Capturing Near Earth Objects." See: <adsabs.harvard.edu/abs/2010RAA....10..587B>. See also: <www.technologyreview.com/blog/arxiv/27112/>.

2011, Aug 25

Cusco Fireball Meteor sighted over Cusco (Peru), 25 August 2011. See: <www.telegraph.co.uk/science/space/8724019/Meteorite-soars-over-Peru.html>, <www.youtube.com/watch?v=rdQLQmoHuJk>.

2011, Aug 25-26

Mission Planning and Operations Group (MPOG) preparation Workshop on international recommendations of Near-Earth Object threat mitigation, organized by COPUOS STsC Action Team 14, jointly with the Association of Space Exploreres (ASE) the Secure World Foundation (SWF), and hosted by NASA in Pasadena (CA, USA), 25-26 August 2011. Follow-up of workshop  held at ESA/ESOC, Darmstadt (Germany), 27-29 October 2010.
The MPOG will be part of the decision structure for an imminent impact threat, as proposed by the ASE and adopted by UN COPUOS's Action Team 14.
See: <swfound.org/events/2011/workshop-on-international-recommendations-for-neo-threat-mitigation>, <www.newswise.com/articles/view/580097/?sc=dwtr&xy=5028369>.

2011, Aug 25-26

Fifth NASA Small Bodies Assessment Group meeting, 25-26 August 2011. Pasadena (CA, USA). See: <www.lpi.usra.edu/sbag/meetings/>, <www.cvent.com/events/5th-meeting-of-the-nasa-small-bodies-assessment-group/event-summary-47d7c1cecd5841878eb6ca7b07554dfc.aspx>, <www.lpi.usra.edu/sbag/meetings/aug2011/agenda.shtml>.
Presentations:
- J. Nuth, 2011, "SBAG roadmap. Science issues." See: <www.lpi.usra.edu/sbag/meetings/aug2011/presentations/1030_Nuth_SBAG5.pdf>.
- M. Zolensky, P. Weissman, 2011, "Sample return roadmap." See: <www.lpi.usra.edu/sbag/meetings/aug2011/presentations/1100_Sykes_SBAG5.pdf>.
- Y. Fernandez, 2011, "Roadmap: population identification characterization." See: <www.lpi.usra.edu/sbag/meetings/aug2011/presentations/1430_Fernandez_SBAG5.pdf>.
- J. Green, L. Johnson, 2011, "Planetary Science Division activities with small bodies." See: <www.lpi.usra.edu/sbag/meetings/aug2011/presentations/Green_LNJ.pdf>.
- P. Abell, 2011, "Roadmap for human exploration of small bodies." See: <www.lpi.usra.edu/sbag/meetings/aug2011/presentations/1450_Abell_SBAG5.pdf>.

2011, Aug 26

R.A. Kerr, 2011, Science, 333, 1081, "Hayabusa gets to the bottom of deceptive asteroid cloaking." See: <adsabs.harvard.edu/abs/2011Sci...333.1081K>, <www.sciencemag.org/content/333/6046/1081.summary>.

2011, Aug 26

A.N. Krot, 2011, Science, 333, 1098, "Bringing part of an asteroid back home." See:
<adsabs.harvard.edu/abs/2011Sci...333.1098K>, <www.sciencemag.org/content/333/6046/1098.summary>. 
See also: <http://www.nature.com/news/2011/110825/full/news.2011.506.html>, <physicsworld.com/cws/article/news/46981>.

2011, Aug 26

T. Nakamura, T. Noguchi, M. Tanaka, et al., 2011, Science, 333, 1113, "Itokawa dust particles: a direct link between S-type asteroids and ordinary chondrites." See:
adsabs.harvard.edu/abs/2011Sci...333.1113N>, <www.sciencemag.org/content/333/6046/1113>.

2011, Aug 26

H. Yurimoto, K, Abe, M. Abe, et al., 2011, Science, 333, 1116, "Oxygen isotopic compositions of asteroidal materials returned from Itokawa by the Hayabusa mission." See:
<adsabs.harvard.edu/abs/2011Sci...333.1116Y>,    <www.sciencemag.org/content/333/6046/1116>.

2011, Aug 26

M. Ebihara, S. Sekimoto, N. Shirai, et al., 2011, Science, 333, 1119, "Neutron activation analysis of a particle returned from asteroid Itokawa." See:
<adsabs.harvard.edu/abs/2011Sci...333.1119E>,    <www.sciencemag.org/content/333/6046/1119>.

2011, Aug 26

T. Noguchi, T. Nakamura, M. Kimura, et al., 2011, Science, 333, 1121, "Incipient space weathering observed on the aurface of Itokawa dust particles." See:
<adsabs.harvard.edu/abs/2011Sci...333.1121N>,    <www.sciencemag.org/content/333/6046/1121>.

2011, Aug 26

A. Tsuchiyama, M. Uesugi, T. Matsushima, et al., 2011, Science, 333, 1125, "Three-dimensional structure of Hayabusa samples: origin and evolution of Itokawa regolith." See:
<adsabs.harvard.edu/abs/2011Sci...333.1121N>,    <www.sciencemag.org/content/333/6046/1125>.

2011, Aug 26

K. Nagao, R. Okazaki, T. Nakamura, et al., 2011, Science, 333, 1128, "Irradiation history of Itokawa regolith material deduced from noble gases in the Hayabusa samples." See:
adsabs.harvard.edu/abs/2011Sci...333.1128N>, <www.sciencemag.org/content/333/6046/1128>.

2011, Sep

A. Dell'Oro, S. Marchi, P. Paolicchi, 2011, Monthly Notices Royal Astronomical Society, Letters, 416, L26, "Collisional evolution of near-Earth asteroids and refreshing of the space-weathering effects." See: <adsabs.harvard.edu/abs/2011MNRAS.416L..26D>.

2011, Sep

F. Moreno, J. Licandro, J.L. Ortiz, et al., Astrophysical Journal, 738,  130, "(596) Scheila in outburst: a probable collision event in the main asteroid belt." See: <adsabs.harvard.edu/abs/2011ApJ...738..130M>.

2011, Sep

A. Thomas, D.E. Trilling, J.P. Emery, et al., 2011, Astronomical Journal, 142, 85, "ExploreNEOs. V. Average albedo by taxonomic complex in the Near-Earth Asteroid population." See: <adsabs.harvard.edu/abs/2011AJ....142...85T>.

2011, Sep

J. Yang, J.I. Goldstein, E.R.D. Scott, et al., 2011, Meteoritics & Planetary Science, 46, 1227, "Thermal and impact histories of reheated group IVA, IVB, and ungrouped iron meteorites and their parent asteroids." See: <adsabs.harvard.edu/abs/2011M%26PS...46.1227Y>.

2011, Sep 1

Starting from 1 September 2011 NEODyS (see item 1999, March 5-6) is sponsored by ESA, which pays a portion of the operating costs, both for the background orbit and risk computations and for the database and web interface; the rest of the cost is covered, as before, by the Department of Mathematics, University of Pisa, with the running research grants of the Celestial Mechanics Group, and by IASF-INAF (Rome), with a PRIN-INAF grant.  See: <newton.dm.unipi.it/neodys/>.

2011, Sep 6

The Space Generation Advisory Council (SGAC) announced the winner of the 2011 Move an Asteroid Competition, Alison Gibbings (UK). See: <spacegeneration.org/index.php/eventstopics/news/454-sgac-announces-the-winner-of-the-2011-move-an-asteroid-competition>, <spacegeneration.org/images/stories/Projects/NEO/MAA/a_smart_cloud_approach_to_asteroid_deflection.pdf>.

2011, Sep 8

M. Willbold, T. Elliott, S. Moorbath, 2011, Nature, 477,195, "The tungsten isotopic composition of the Earth’s mantle before the terminal bombardment." See: <adsabs.harvard.edu/abs/2011Natur.477..195W>, <www.nature.com/nature/journal/v477/n7363/full/nature10399.html>.

2011, Sep 15

Meteor fireball over Southern California, Arizona and Nevada (USA). See: <http://www.jpl.nasa.gov/news/news.php?release=2011-291>, <www.amsmeteors.org/2011/09/major-fireball-event-seen-from-southern-california-arizona-and-nevada-september-14th-2011-945-pdt/>, <latimesblogs.latimes.com/lanow/2011/09/meteor-reports-across-sky.html>.

2011, Sep 15-18

International Meteor Conference 2011, 30th edition, 15-18 September, Sibiu (Romania), See: <www.imo.net/imc2011/index.php>.

2011, Sep 16

Memorial seminar Tom Gehrels 1925-2011: A Celebration of Life, Lunar and Planetary Laboratory, Kuiper Space Sciences, Rm 308, Tucson (AZ, USA), 16 September 2011, 3:00 - 5:00 p.m.. See: <www.lpl.arizona.edu/calendar/calendar.php?ID=457>.

2011, Sep 27

Asteroid 2011 SE58 (H = 27.6 mag, D ≈ 10 m) passed Earth at a nominal miss distance of 0.6 LD. Minimum miss distance 0.6 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2011+SE58+&orb=1>.
See also: <www.space.com/13145-2-small-asteroids-pass-earth-moon.html>.

2011, Sep 27-30

Keck Institute for Space Studies (KISS) Workshop Asteroid Retrieval Mission Study, California Institute of Technology, Pasadena (CA, USA), 27-30 September 2011. See: <kiss.caltech.edu/workshops/asteroid2011/index.html>, <www.wired.com/wiredscience/2011/10/asteroid-moving/>, <www.space.com/13164-killer-asteroids-deflection-humanity-cooperation.html>, <billionyearplan.blogspot.com/2011/10/to-deflect-killer-asteroids-humanity.html>, <www.newscientist.com/article/dn23039-nasa-mulls-plan-to-drag-asteroid-into-moons-orbit.html>, <www.space.com/19151-asteroid-moon-orbit-nasa-study.html>.
Study final report (2 April 2012): <kiss.caltech.edu/study/asteroid/asteroid_final_report.pdf>.
Other presentations:
- J. Brophy, F. Culick, L. Friedman, et al., March 14, 2012, "Asteroid retrieval feasibility." See:
<kiss.caltech.edu/study/asteroid/20120314_ESA_ESTEC.pdf>.
- J.R. Brophy, L. Friedman, F. Culick, et al., March 7, 2012, "Asteroid retrieval mission feasibility study." See: <kiss.caltech.edu/study/asteroid/20120307_IEEE_Presentation.pdf>.
- J.R. Brophy, L. Friedman, F. Culick, July 9, 2012, "Asteroid retrieval mission feasibility study." See: <www.lpi.usra.edu/sbag/meetings/jul2012/presentations/TUES_1645_Brophy_Asteroid_Return.pdf>,
See also: <www.space.com/19151-asteroid-moon-orbit-nasa-study.html>, <www.space.com/20538-nasa-asteroid-capture-funding.html>, <www.space.com/20552-nasa-considers-plan-to-lasso-an-asteroid-for-study-video.html>,<www.space.com/20591-nasa-asteroid-capture-mission-feasibility.html>,<www.nasa.gov/news/budget/index.html>,<www.space.com/20599-nasa-2014-budget-highlights.html>,<www.space.com/20601-animation-of-proposed-asteroid-retrieval-mission-video.html>, <www.thespacereview.com/article/2283/1>, <targetneo.jhuapl.edu>, <www.nasa.gov/content/new-imagery-of-asteroid-mission/#.UkNbdX-TLpe>, <www.nasa.gov/content/asteroid-initiative-idea-synthesis-workshop/#.UkPgqn-TLpc>.

2011, Sep 28

Asteroid 2011 TO (H = 26.3 mag, D ≈ 20 m) passed Earth at a nominal miss distance of 0.3 LD. Minimum miss distance 0.3 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2011+TO+&orb=1>.
See also: 28 September 1980, 27 September 2044.

2011, Sep 28-29

First NEA detected by the Teide Observatory Tenerife Asteroid Survey (TOTAS) during an observation slot sponsored by the ESA Space Situational Awareness (SSA) programme : 2011 SF108 (H = 20.0 mag, D = 350 m).
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2011+SF108&orb=1>, <www.esa.int/SPECIALS/SSA/SEMURW6UXSG_0.html>,
See also: <www.space.com/13272-asteroid-discovery-amateur-astronomers-2011-sf108.html>, <news.discovery.com/space/near-earth-asteroid-discovered-via-crowd-sourcing-111012.html>, <www.dailymail.co.uk/sciencetech/article-2048797/Amateur-skywatchers-Tenerife-impact-threat-asteroid.html>, <tech.groups.yahoo.com/group/mpml/message/26123>.

2011, Sep 29

Observations by NASA's Wide-field Infrared Survey Explorer, or WISE, in a survey program called NEOWISE, show that there are significantly fewer near-Earth asteroids in the mid-size range than previously thought. The findings also indicate that the Spaceguard program has found 911 NEAs, more than 93% of the estimated 981±19  NEAs larger than 1000 m, meeting the 90% goal agreed to with U.S. Congress in 1998. For smaller objects the NEOWISE detection census reads: 
~1,200 (80%) of the estimated ~1,500 NEAs in the 500-1000 m range; 
~1,100 (46%) of the estimated ~2,400 NEAs in the 300-500 m range; 
~2,000 (13%) of the estimated ~15,700 NEAs in the 100-300 m range. 
The estimated number of NEAs with D > 140 m is 13,200 ± 1,900. 
The estimated number of NEAs with D > 100 m is 20,500 ± 3,000. 
Ref: 
- A. Mainzer, T. Grav, J. Bauer, et al., 2011, Astrophysical Journal, 743, 156, "NEOWISE observations of Near-Earth Objects: preliminary results." See: <adsabs.harvard.edu/abs/2011ApJ...743..156M>.
- A. Mainzer, T. Grav, J. Masiero, et al., June 2012, Astrophysical Journal,752, 110, "Characterizing subpopulations within the Near Earth Objects with NEOWISE: preliminary results." See: <adsabs.harvard.edu/abs/2012ApJ...752..110M>.
See also: <http://www.jpl.nasa.gov/news/news.php?release=2011-304>, <www.jpl.nasa.gov/video/index.cfm?id=1023>, <apod.nasa.gov/apod/ap111001.html>, <www.space.com/13132-potentially-killer-asteroids-earth-nasa.html>, <www.space.com/13129-killer-asteroids-wise.html>.

2011, Sep 30

Asteroid 2011 SM137 (H = 27.8 mag, D ≈ 10 m) passed Earth at a nominal miss distance of 0.8 LD. Minimum miss distance 0.8 LD. 
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2011+SM137+&orb=1>.
See also: <www.space.com/13145-2-small-asteroids-pass-earth-moon.html>.

2011, Oct

G. Beekman, 2011, Zenit, oktober 2011, "Vier trouwe begeleiders van de aarde."

2011, Oct

G.C. de Elía, R.P. Di Sisto, 2011, Astronomy & Astrophysics, 534, A129, "Impactor flux and cratering on Ceres and Vesta: Implications for the early Solar System." See: <adsabs.harvard.edu/abs/2011A%26A...534A.129D>.

2011, Oct

M. Elvis, J. McDowell, J.A. Hoffman, R.P. Binzel, 2011, Planetary and Space Science, 59, 1408, "Ultra-low delta-v objects and the human exploration of asteroids." See: <adsabs.harvard.edu/abs/2011P%26SS...59.1408E>.

2011, Oct

D.H. Forgan, E. Martin, 2011, International Journal of Astrobiology, 10, 307, "Extrasolar asteroid mining as forensic evidence for extraterrestrial intelligence." See: <adsabs.harvard.edu/abs/2011IJAsB..10..307F>.

2011, Oct

S.-P. Gong, J.-F. Li, X.-Y. Zeng, 2011, Research in Astronomy and Astrophysics, 11, 1123, "Utilization of H-reversal trajectory of solar sail for asteroid deflection." See: <adsabs.harvard.edu/abs/2011RAA....11.1123G>. See also: <www.asianscientist.com/topnews/tsinghua-university-spacecraft-solar-sail-asteroid-apophis-earth-2036/>, <www.space.com/12645-asteroid-deflection-doomsday-earth-capability.html>, <www.space.com/12781-space-missions-deflect-dangerous-asteroids-apophis.html>.

2011, Oct

Yu.D. Medvedev, 2011, Solar System Research, 45, 386, "Determination of the orbits of near-Earth asteroids from observations at the first opposition." See: <adsabs.harvard.edu/abs/2011SoSyR..45..386M>.

2011, Oct O. Popova, J. Borovička, W.K. Hartmann, et al., 2011, Meteoritics & Planetary Science, 46, 1525, "Very low strengths of interplanetary meteoroids and small asteroids." See: <adsabs.harvard.edu/abs/2011M%26PS...46.1525P>.
2011, Oct

G. Pratesi, V.M. Cecchi, 2011, Atlas of Meteorites (Cambridge: CUP). See: <www.cambridge.org/aus/catalogue/catalogue.asp?isbn=9780521840354>.

2011, Oct

V.V. Shuvalov, I.A. Trubetskaya, 2011, Solar System Research, 45, 392, "Numerical simulation of high-velocity ejecta following comet and asteroid impacts: preliminary results." See: <adsabs.harvard.edu/abs/2011SoSyR..45..392S>.

2011, Oct

O. Vaduvescu, M. Birlan, A. Tudorica, et al., 2011, Planetary and Space Science, 59, 1632, "EURONEAR – recovery, follow-up and discovery of NEAs and MBAs using large field 1-2m telescopes." See: <adsabs.harvard.edu/abs/2011P%26SS...59.1632V>.

2011, Oct

S.D. Wolters, A.J. Ball, N. Wells, et al., 2011, Earth and Planetary Astrophysics, 59, 1506, "Measurement requirements for a near-Earth asteroid impact mitigation demonstration mission." See: <adsabs.harvard.edu/abs/2011P%26SS...59.1506W>. See also: <www.technologyreview.com/blog/arxiv/27028/>.

2011, Oct 2-7

European Planetary Science Congress - DPS Joint Meeting, 2-7 October 2011, Nantes (France). See: <meetings.copernicus.org/epsc-dps2011/>.
Some contributions:
- M. Brož, A. Morbidelli, W.F. Bottke, et al., 2011, p. 559, "Asteroid families versus the Late Heavy Bombardment." See: <adsabs.harvard.edu/abs/2011epsc.conf..559B>.
- F. Bernardi, G.B. Valsecchi, D. Farnocchia, 2011, p. 905, "Contribution of an NEO Wide Survey for the small impactors population completeness." See: <adsabs.harvard.edu/abs/2011epsc.conf..905B>.
- R.P. Binzel, 2011, p. 1156, "Near-Earth Asteroid – Meteorite puzzle: putting the pieces together." See: <adsabs.harvard.edu/abs/2011epsc.conf.1156B>.
- M.W. Busch, L.A.M. Benner, D.J. Scheeres, et al., 2011, p. 297, "Twenty years of Toutatis." See: <adsabs.harvard.edu/abs/2011epsc.conf..297B>.
- G.J. Consolmagno, D.T. Britt, R.J. Macke, 2011, p. 578, "Cautionary tales about comparing meteorites to asteroids." See: <adsabs.harvard.edu/abs/2011epsc.conf..578C>.
- G.J. Consolmagno, C. Opeil, D.T. Britt, 2011, p. 574, "Uniaxial stress/strain of meteorites." See: <adsabs.harvard.edu/abs/2011epsc.conf..574C>.
- F.E. DeMeo, S. Greenstreet, B. Gladman, R.P. Binzel, 2011, p. 338, "The distribution of Q-types among NEOs." See: <adsabs.harvard.edu/abs/2011epsc.conf..338D>.
- J. Gayon-Markt, M. Delbo, A. Morbidelli, 2011, p. 915, "On the origin of the Almahata Sitta meteorite and asteroid 2008 TC3." See: <http://adsabs.harvard.edu/abs/2012MNRAS.424..508G>.
- M. Granvik, J. Vaubaillon, R. Jedicke, 2011, p. 797, "Population characteristics for natural Earth satellites." See: <adsabs.harvard.edu/abs/2011epsc.conf..797G>.
- S. Greenstreet, H. Ngo, B. Gladman, et al., 2011, p. 536, "Production of retrograde NEAs." See: <adsabs.harvard.edu/abs/2011epsc.conf..536G>.
- T.J. Jopek, 2011, p. 15, "The Near-Earth Asteroid streams." See: <adsabs.harvard.edu/abs/2011epsc.conf...15J>.
- M. Mueller, D.E. Trilling, J.L. Hora, et al., 2011, p. 839, "ExploreNEOs: the Warm Spitzer Near Earth Object survey." See: <http://adsabs.harvard.edu/abs/2011epsc.conf..839M>.
- T.G. Müller, S. Hasegawa, M. Abe, 2011, p. 1505, "Near-Earth asteroid 162173 (1999 JU3): constraining size, albedo, shape, spin-axis and thermal properties via thermophysical model techniques." See: <http://adsabs.harvard.edu/abs/2011A%26A...525A.145M>.
- S.P. Naidu, J.L. Margot, M.W. Busch, et al., 2011, p. 310, "Binary Near-Earth Asteroid 2000 DP107: component shapes, mutual orbit, evolution." See: <adsabs.harvard.edu/abs/2011epsc.conf..310N>.
- E. Perozzi, A. Rossi, G.B. Valsecchi, 2011, p. 1469, "On the selection of targets for human missions to NEOs." See: <adsabs.harvard.edu/abs/2011epsc.conf.1469P>.
- E. Schunova, M. Granvik, R. Jedicke, et al., 2011, p. 1875, "Searching for near-Earth asteroid families." See: <adsabs.harvard.edu/abs/2011epsc.conf.1875S>.
- T.S. Statler, 2011, p. 1680, "The spin rates of small Near-Earth Asteroids." See: <adsabs.harvard.edu/abs/2011epsc.conf.1680S>.
- C.A. Thomas, D.E. Trilling, J.P. Emery, 2011, p. 1531, "ExploreNEOs: average albedo by taxonomic complex in the near-Earth asteroid population." See: <adsabs.harvard.edu/abs/2011epsc.conf.1531T>.
- G.B. Valsecchi, G.F. Gronchi, 2011, p. 402, "The ever changing population of large NEAs: a global view." See: <adsabs.harvard.edu/abs/2011epsc.conf..402V>.
- R. Wainscoat, R. Jedicke, L. Denneau, et al., 2011, p. 714, "The Pan-STARRS search for Near Earth Asteroids: present status and future plans." See: <adsabs.harvard.edu/abs/2011epsc.conf..714W>.

2011, Oct 8

Draconid meteor shower, left-overs from the tail of comet Giacobini-Zinner, observed from ESA Falcon-20 research airplanes. See: <www.esa.int/esaSC/SEM8DPGURTG_index_0.html>.

2011, Oct 11

I. Halevy, W.W. Fischer, J.M. Eiler, 2011, Proc. National Academy of Sciences, 108, 16895, "Carbonates in the Martian meteorite Allan Hills 84001 formed at 18 ± 4 °C in a near-surface aqueous environment." See: <www.pnas.org/content/108/41/16895.abstract>.

2011, Oct 12

Asteroid 2011 UT (H = 25.8 mag, D ≈ 25 m) passed Earth at a nominal miss distance of 0.6 LD. Minimum miss distance 0.6 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2011+UT+&orb=1>.

2011, Oct 13

Closest approach of asteroid 1036 Ganymed (1924 TD, H = 9.45 mag, D = 31.7 km), largest NEA known, in the period 1900-2100 yr: 0.36 AU ≈ 140 LD ≈ 55 million km. 
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=1924+TD&orb=1>, <en.wikipedia.org/wiki/1036_Ganymed>.
Ref: 
J. Meeus, M. Drummen, September 2011, Zenit, "Ganymed in aantocht." See: <www.dekoepel.nl/zenit/september2011.html>.
See also: 13 October 2024.

2011, Oct 15

G.R. Osinski, L.L. Tornabene, R.A.F. Grieve, 2011, Earth and Planetary Science Letters, 310, 167, "Impact ejecta emplacement on terrestrial planets." See: <www.sciencedirect.com/science/article/pii/S0012821X11004675>.

2011, Oct 17

Asteroid 2009 TM8 (H = 28.6 mag, D ≈ 7 m) passed Earth at a nominal miss distance of 0.9 LD. Minimum miss distance 0.5 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2009+TM8+&orb=1>.
See also: 17 October 2009.

2011, Oct 26

Asteroid 2011 UL169 (H = 28.3 mag, D ≈ 8 m) passed Earth at a nominal miss distance of 0.7 LD. Minimum miss distance 0.7 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2011+UL169+&orb=1>.

2011, Oct 28

Asteroid 2011 UX255 (H = 27.4 mag, D ≈ 10 m) passed Earth at a nominal miss distance of 0.4 LD. Minimum miss distance 0.4 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2011+UX255+&orb=1>.

2011, Oct 28

H. Sierks, P. Lamy, C. Barbieri, et al., 2011, Science, 334, 487, "Images of asteroid 21 Lutetia: a remnant planetesimal from the early Solar System." See: <adsabs.harvard.edu/abs/2011Sci...334..487S>.

2011, Nov

S. Breiter, A. Rożek, D. Vokrouhlický, 2011, Monthly Notices Royal Astronomical Society, 417, 2478, "Yarkovsky-O'Keefe-Radzievskii-Paddack effect on tumbling objects." See: <adsabs.harvard.edu/abs/2011MNRAS.417.2478B>.

2011, Nov

M. Brozović, L.A.M. Benner, P.A. Taylor, et al., 2011, Icarus, 216, 241, "Radar and optical observations and physical modeling of triple near-Earth Asteroid (136617) 1994 CC." See: <adsabs.harvard.edu/abs/2011Icar..216..241B>.

2011, Nov

M. Hicks, J. Somers, T. Truong, et al., 2011, The Astronomer's Telegram, #3763, "Broadband photometry of 2005 YU55: Solar phase behavior and absolute magnitude." See: <adsabs.harvard.edu/abs/2011ATel.3763....1H>.

2011, Nov

J. Kimberley, K.T. Ramesh, 2011, Meteoritics & Planetary Science, 46, 1653, "The dynamic strength of an ordinary chondrite." See: <adsabs.harvard.edu/abs/2011M%26PS...46.1653K>.

2011, Nov

J.R. Masiero, A.K. Mainzer, T. Grav, et al., 2011, Astrophysical Journal, 741, 68, "Main belt asteroids with WISE/NEOWISE. I. Preliminary albedos and diameters." See: <adsabs.harvard.edu/abs/2011ApJ...741...68M>. See also: <www.jpl.nasa.gov/asteroidwatch/newsfeatures.cfm?release=2011-296>.

2011, Nov

M. Popescu, M. Birlan, R. Binzel, et al., 2011, Astronomy & Astrophysics, 535, A15, "Spectral properties of eight near-Earth asteroids." See: <adsabs.harvard.edu/abs/2011A%26A...535A..15P>.

2011, Nov 8, 23:28

Asteroid 308635 (2005 YU55, H = 21.1 mag, D ≈ 325 m, Po = 1.22 yr, PHA) passed Earth at a nominal miss distance of  0.846 LD (and the Moon at a nominal miss distance of 0.624 LD). Minimum miss distance 0.845 LD.
Arecibo Observatory
radar imaging on 19 April 2010 reduced uncertainties about its orbit by 50%, eliminating any possibility of an impact with the Earth for the next 100 years. New Arecibo Observatory and Goldstone radar observations on 7 and 8 November confirmed a spherical shape. On 19 January 2029, asteroid 2005 YU55 will pass Venus at a nominal distance of 0.74 LD; minimum miss distance 0.66 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2005+YU55&orb=1>, <en.wikipedia.org/wiki/2005_YU55>.
Ref: 
- M. Hicks, K. Lawrence, L. Benner, 2010, The Astronomer's Telegram, #2571, "Palomar spectroscopy of 2001 FM129, 2004 FG11, and 2005 YU55." See: <adsabs.harvard.edu/abs/2010ATel.2571....1H>;
- M. Hicks, J. Somers, T. Truong, et al., 2011, The Astronomer's Telegram, #3763, "Broadband photometry of 2005 YU55: Solar phase behavior and absolute magnitude." See: <adsabs.harvard.edu/abs/2011ATel.3763....1H>.
- P.A. Taylor, M.C. Nolan, E.S. Howell, et al., 2011, Bulletin American Astronomical Society, AAS Meeting #219, #432.11, "Radar observations of 2005 YU55's flyby of Earth." See: <adsabs.harvard.edu/abs/2012AAS...21943211T>.
- N.A. Moskovitz, B. Yang, L.F. Lim, et al., 2012, in: 43rd Lunar and Planetary Science Conference, 19-23 March 2012, The Woodlands (TX, USA), LPI Contribution No. 1659, p.2080, "The near-Earth encounter of asteroid 2005 YU55: visible and near-infrared spectroscopy." See: <adsabs.harvard.edu/abs/2012LPI....43.2080M>.
- L.F. Lim, J.P. Emery, N.A. Moskovitz, M. Granvik, 2012, in: 43rd Lunar and Planetary Science Conference, 19-23 March 2012, The Woodlands (TX, USA), LPI Contribution No. 1659, id.2202, "The near-Earth encounter of 2005 YU55: thermal infrared observations from Gemini North." See: <adsabs.harvard.edu/abs/2012LPI....43.2202L>.
- B.D. Warner, R.D. Stephens, J.W. Brinsfield, et al., 2012, Minor Planet Bulletin, 39, 84,"Lightcurve analysis of NEA 2005 YU55." See: <adsabs.harvard.edu/abs/2012MPBu...39...84W>.
- L.F. Lim, J.P. Emery, N.A. Moskovitz, et al., October 2012, American Astronomical Society, DPS meeting #44, #305.01, "The Near-Earth encounter of asteroid 308635 (2005 YU55): thermal IR observations." See: <adsabs.harvard.edu/abs/2012DPS....4430501L>.
- T. G. Mueller, T. Miyata, C. Kiss, M. A. Gurwell, et al., July 2013, Astronomy & Astrophysics, in press, e-print arXiv:1307.7517, "Physical properties of asteroid (308635) 2005 YU55 derived from multi-instrument infrared observations during a very close Earth-approach." See: <adsabs.harvard.edu/abs/2013arXiv1307.7517M>.
See also: <http://www.jpl.nasa.gov/wise/newsfeatures.cfm?release=2010-144>, <www.nasa.gov/topics/solarsystem/features/asteroid20100429.html>,  <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2005%20YU55%20;orb=1;cov=0;log=0;cad=1#cad>, <www.news.cornell.edu/stories/April10/AreciboAsteroid.html>, <www.space.com/8312-potentially-dangerous-asteroid-spotted-passing-earth.html>, <www.space.com/11310-huge-asteroid-2005-yu55-passing-earth-november.html>, <www.sciencedaily.com/releases/2010/05/100503010702.htm>, <www.planetary.org/blog/article/00002463/>, <neo.jpl.nasa.gov/news/news171.html>, <www.nature.com/news/2011/111102/full/news.2011.625.html>, <http://www.jpl.nasa.gov/news/news.php?release=2011-129>, <http://www.jpl.nasa.gov/news/news.php?release=2011-332>, <www.ustream.tv/recorded/18250783>, <http://www.jpl.nasa.gov/news/news.php?release=2011-343>, <herschel.cf.ac.uk/news/herschel-observe-near-earth-asteroid>, <www.huffingtonpost.com/2011/11/08/asteroid-earth-2011-november-yu55_n_1081710.html?ref=green>, <www.youtube.com/watch?v=R-ZVqiN3OBE>, <http://www.jpl.nasa.gov/news/news.php?release=2011-346>, <www.space.com/13549-huge-asteroid-2005yu55-close-earth-flyby.html>, <http://www.jpl.nasa.gov/news/news.php?release=2011-351>, <www.cbc.ca/news/world/story/2011/11/09/asteroid-research.html>, <apod.nasa.gov/apod/ap111109.html>, <en.wikipedia.org/wiki/File:2005-YU55-Trajectory-8th-Nov-2011.png>.
See also: 12 August 2005, 8 November 2075.

2011, Nov 13-20

The Second Arab Impact Cratering and Astrogeological Conference (AICAC II), 13-20 November 2011, Casablanca (Morocco). See: <www.fsac.ac.ma/aicaii/index.html>.

2011, Nov 14-15

Near Earth Objects (NEOs) Working Group on Media Communications and Risk Management, held 14-15 November 2011 at the Laboratory for Atmospheric and Space Physics (LASP) at the University of Colorado, Boulder (CO, USA). The event was co-sponsored by Secure World Foundation and the Association of Space Explorers.
See: <swfound.org/events/2011/near-earth-objects-mediarisk-communications-working-group>, <www.unoosa.org/pdf/pres/stsc2012/tech-46E.pdf>.
Report: <swfound.org/media/82686/>.
See also: <www.skyandtelescope.com/community/skyblog/newsblog/If-An-Impact-Looms-Then-What-134136683.html>, <bigthink.com/ideas/41151?page=all>, <cosmiclog.msnbc.msn.com/_news/2011/11/16/8845471-asteroid-debate-rises-to-next-level>, <www.space.com/16033-asteroid-strike-global-warning-system.html>.

2011, Nov 14-16

NASA Human Space Exploration Community Workshop on the Global Exploration Roadmap, 14-16 November 2011, San Diego (CA, USA). The workshop did frame the Global Exploration Roadmap, with overviews of NASA's plans for human spaceflight, including exploration missions to an asteroid and Mars. See: <www.nasa.gov/exploration/about/isecg/ger-workshop.html>.

2011, Nov 17

Charles F. Bolden Jr., 2011, NASA Administrator, Statement before the Subcommittee on Science and Space Committee on Commerce, Science and Transportation, U. S. Senate. See: <www.spaceref.com/news/viewsr.html?pid=39082>.

2011, Nov 17

EU FP7 NEOShield proposal approved and grant agreement signed by the European Commission. Overall funding is M€ 5.8, including M€ 1.8 from partners, for a project lifetime of 3.5 years. NEOShield involves 13 partner institutes in France, Germany, Russia, Spain, UK and USA, and will be coordinated by DLR in Berlin (Germany). The NEOShield project, which formally commences in 1 January 2012, covers investigation of physical properties of NEOs, mitigation methods, technology development, demonstration missions, and a global response campaign roadmap. The NEOShield kick-off meeting will be held at DLR, 16-17 January 2012.
See: <www.dlr.de/dlr/en/desktopdefault.aspx/tabid-10081/151_read-2640/year-2012/>, <elib.dlr.de/70019/>.

2011, Nov 18

UN - Committee on the Peaceful Uses of Outer Space (UN-COPUOS), Information on research in the field of NEOs carried out by Member States, international organizations and other entities. A/AC.105/C.1/100. See: <www.oosa.unvienna.org/pdf/reports/ac105/C1/AC105_C1_100E.pdf>.

2011, Nov 18 Leonid Fireball over Tenerife (Canary Islands, Spain). See: <apod.nasa.gov/apod/ap111122.html>.
2011, Nov 22

Ph. Plait, 2011, Bad Astronomy, 22 November 2011, "My asteroid impact talk is now on TED!" See: <blogs.discovermagazine.com/badastronomy/2011/11/22/my-asteroid-impact-talk-is-now-on-ted/>, <www.ted.com/talks/phil_plait_how_to_defend_earth_from_asteroids.html>.

2011, Dec

D. Bancelin, F. Colas, W. Thuillot, et al., 2011, in: G. Alecian, K. Belkacem, R. Samadi & D. Valls-Gabaud (eds.), SF2A-2011: Proceedings of the Annual meeting of the French Society of Astronomy and Astrophysics, "Updated orbit of Apophis with recent observations." See: <adsabs.harvard.edu/abs/2011sf2a.conf..629B>.

2011, Dec

D. Bancelin, D. Hestrofer, W. Thuillot, 2011, in: G. Alecian, K. Belkacem, R. Samadi & D. Valls-Gabaud (eds.), SF2A-2011: Proceedings of the Annual meeting of the French Society of Astronomy and Astrophysics, "Orbit of potentially hazardous asteroids using Gaia and ground-based observations." See: <adsabs.harvard.edu/abs/2011sf2a.conf..263B>.

2011, Dec

B.E. Clark, R.P. Binzel, E.S. Howell, et al., 2011, Icarus, 216, 462, "Asteroid (101955) 1999 RQ36: spectroscopy from 0.4 to 2.4 μm and meteorite analogs." See: <adsabs.harvard.edu/abs/2011Icar..216..462C>.

2011, Dec

V.V. Emel'Yanenko, S.A. Naroenkov, B.M. Shustov, 2011, Solar System Research, 45, 498, "Distribution of the Near-Earth Objects." See: <adsabs.harvard.edu/abs/2011SoSyR..45..498E>.

2011, Dec

L.V. Ksanfomality, 2011, Solar System Research, 45, 504, "Dynamical evolution of the nucleus of comet Hartley 2 and asteroid Itokawa." See: <adsabs.harvard.edu/abs/2011SoSyR..45..504K>.

2011, Dec

I.V. Lomakin, M.B. Martynov, V.G. Pol', A.V. Simonov, 2011, Solar System Research, 45, 577, "Asteroid hazard, real problems and practical actions." See: <adsabs.harvard.edu/abs/2011SoSyR..45..577L>.

2011, Dec

E.T. Lu, 2011, Scientific American, 305, 16, "Stop the killer rocks." See: <www.nature.com/scientificamerican/journal/v305/n6/full/scientificamerican1211-16.html>.

2011, Dec

A. Mainzer, T. Grav, J. Bauer, et al., 2011, Astrophysical Journal, 743, 156, "NEOWISE observations of Near-Earth Objects: preliminary results." See: <adsabs.harvard.edu/abs/2011ApJ...743..156M>.

2011, Dec

J.-Y. Prado, A. Perret, O. Boisard, 2011, Advances in Space Research, 48, 2011, "Deflecting Apophis with a flotilla of solar shields." See: <adsabs.harvard.edu/abs/2011AdSpR..48.1911P>.

2011, Dec

S.A. Sandford, 2011, in: J. Cernicharo & R. Bachiller (eds.), The Molecular Universe, Proc.  IAU Symposium No. 280 (Cambridge: CUP), p. 275, "The power of sample return missions - Stardust and Hayabusa." See: <adsabs.harvard.edu/abs/2011IAUS..280..275S>.

2011, Dec

P.A. Taylor, M.C. Nolan, E.S. Howell, et al., 2011, Bulletin American Astronomical Society, AAS Meeting #219, #432.11, "Radar observations of 2005 YU55's flyby of Earth." See: <adsabs.harvard.edu/abs/2012AAS...21943211T>.

2011, Dec

K.A. van der Hucht, 2011, in: Newsletter European Astronomical Society, Issue 42, p. 6, "Potential hazards of Near Earth Objects – truth and consequences." See: <eas.unige.ch/newsletter.jsp>.

2011, Dec

P. Vemazza, P. Lamy, O. Groussin, et al., 2011, Icarus, 216, 650, "Asteroid (21) Lutetia as a remnant of Earth's precursor planetesimals." See: <adsabs.harvard.edu/abs/2011Icar..216..650V>.

2011, Dec 3

Asteroid 2011 XC2 (H = 23.0 mag, D ≈ 90 m) passed Earth at a nominal miss distance of 0.9 LD. Minimum miss distance 0.9 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2011+XC2+&orb=1>.

2011, Dec 9

UN - Committee on the Peaceful Uses of Outer Space (UN-COPUOS), Near-Earth objects, 2011-2012, Interim report of Action Team 14 on Near-Earth Objects. See: <www.unoosa.org/pdf/limited/c1/AC105_C1_L317E.pdf>.

2011, Dec 14

Asteroid 2011 YQ1 (H = 25.6 mag, D ≈ 30 m) passed Earth at a nominal miss distance of 1.0 LD. Minimum miss distance 1.0 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2011+YQ1+&orb=1>.

2011, Dec 15

UN - Committee on the Peaceful Uses of Outer Space (UN-COPUOS), Near-Earth objects, 2011-2012. Draft recommendations of the Action Team on Near-Earth Objects for an international response to the near-Earth object impact threat. See: <www.unoosa.org/pdf/limited/c1/AC105_C1_L317E.pdf>.

2011, Dec 15

A.L. Gronstal, 2011, Astrobiology Magazine, 15 December 2011, "Seeking a pot of geological gold", See: <www.astrobio.net/index.php?option=com_expedition&task=detail&id=4400>.
See also: <www.space.com/14069-mass-extinction-earth-impact-triassic-jurassic.html>.

2011, Dec 28

Asteroid 2011 YC40 (H = 29.7 mag, D ≈ 4 m) passed Earth at a nominal miss distance of 0.3 LD. Minimum miss distance 0.3 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2011+YC40+&orb=1>.

2011, Dec 29

Asteroid 2012 AQ (H = 30.7 mag, D ≈ 4 m) passed Earth at a nominal miss distance of 0.7 LD. Minimum miss distance 0.7 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2012+AQ+&orb=1>.

2011, Dec 30

Asteroid 2011 YC63 (H = 29.0 mag, D ≈ 6 m) passed Earth at a nominal miss distance of 0.6 LD.Minimum miss distance 0.6 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2011+YC63&orb=1>.

2012, Jan 1

8457 NEAs known (ranging in size up to ~32 km: 1036 Ganymed, 1924 TD, H = 9.45 mag, D = 31.7 km), of which 1277 PHAs (ranging in size from 140 m up to ~5 km: 4179 Toutatis, 1989 AC, H = 15.3 mag, D = 4.6×2.4×1.9 km, PHA). See: <neo.jpl.nasa.gov/stats/>.

2012, Jan

K.J. Burleigh, H.J. Melosh, L.L. Tornabene, et al. 2012, Icarus, 217, 194, "Impact airblast triggers dust avalanches on Mars." See: <adsabs.harvard.edu/abs/2012Icar..217..194B>.
See also: <redplanet.asu.edu/?p=1157>, <adsabs.harvard.edu/abs/2009LPI....40.1431B>.

2012, Jan

J. Fang, J.-L. Margot, 2012, Astronomical Journal, 143, 24, "Near-Earth binaries and triples: origin and evolution of spin-orbital properties."  See: <adsabs.harvard.edu/abs/2012AJ....143...24F>.

2012, Jan

J. Fang, J.-L. Margot, 2012, Astronomical Journal, 143, 25, "Binary asteroid encounters with terrestrial planets: timescales and effects."  See: <adsabs.harvard.edu/abs/2012AJ....143...25F>.

2012, Jan

S. Greenstreet, H. Ngo, B. Gladman, 2012, Icarus, 217, 355, "The orbital distribution of Near-Earth Objects inside Earth’s orbit." See: <adsabs.harvard.edu/abs/2012Icar..217..355G>.

2012, Jan 2

Asteroid 2011 YB63 (H = 29.8 mag, D ≈ 4 m) passed Earth at a nominal miss distance of 0.6 LD. Minimum miss distance 0.6 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2011+YB63+&orb=1>.

2012, Jan 12-13

MarcoPolo-R workshop Physical characterisation of MarcoPolo-R targets, Observatoire de Paris, Meudon (France), 12-13 January 2012. See: <smass.mit.edu/MarcoPolo/home.html>.
Presentations:
Session 1. Visible and near-infrared observations.
- A. Barucci, 2012, "MarcoPolo-R Near Earth Asteroid sample return mission. Welcome and introduction" See: <smass.mit.edu/MarcoPolo/presentations/Barucci_MarcoPolo-R_Meudon2012.ppt>.
- F. DeMeo, 2012, "Comparison of the surface properties of asteroids 1996 FG3, 1999 RQ36, and 1999 JU3, targets of MarcoPolo‐R, OSIRIS‐REx, and Hyabusa‐2." See: <http://smass.mit.edu/MarcoPolo/presentations/DeMeo_MarcoPolo-R_Meudon2012.pdf>.
- A. Rivkin, E. Howell, R. Vervack, et al., 2012, "New observations of 1996 FG3 from 0.8-4 microns and potential meteorite analogs." See: <smass.mit.edu/MarcoPolo/presentations/Rivkin_MarcoPolo-R_Meudon2012.pptx>.
- M. Birlan, M. Popescu, F. Colas, A. Nedelcu, 2012, "Focus on (175706) 1996 FG3: modeling spectra using M4AST and new observational results from Pic du Midi." See: <smass.mit.edu/MarcoPolo/presentations/Birlan_MarcoPolo-R_Meudon2012.ppt>.
Session 2. Thermal and radar observations and dynamics.
- J. Emery, 2012, "Thermal characterization of surfaces of small asteroids." See: <smass.mit.edu/MarcoPolo/presentations/Emery_MarcoPolo-R_Meudon2012.ppt>.
- S. Green, 2012, "Constraints on thermal inertia of (175706) 1996 FG3 using a rough surface thermophysical model." See: <smass.mit.edu/MarcoPolo/presentations/Green_MarcoPolo-R_Meudon2012.ppt>.
- H. Campins, J. de León, A. Morbidelli, et al., 2012, "The origin of asteroids accessible to Marco Polo-R." See: <smass.mit.edu/MarcoPolo/presentations/Campins_MarcoPolo-R_Meudon2012.ppt>.
- K.Walsh, M. Delbo, M. Mueller, R.Binzel, F. De Meo, 2012, "Physical characterization and origin of binary
near-Earth asteroid (175706) 1996 FG3." See: <smass.mit.edu/MarcoPolo/presentations/Delbo_MarcoPolo-R_Meudon2012.pdf>.
- P. Michel, 2012, "Possible formation mechanism of binary asteroids and which assumptions can we make on their regolith properties." See: <smass.mit.edu/MarcoPolo/presentations/Michel_MarcoPolo-R_Meudon2012.pdf>.
Session 3. Shape models and meteorite comparison.
- P. Vernazza, 2012, "Among the yet unsampled meteorite classes, which one will we learn the most from?" See: <smass.mit.edu/MarcoPolo/presentations/Vernazza_MarcoPolo-R_Meudon2012.pdf>.
- J.M. Trigo-Rodríguez, J. Llorca, J.M. Madiedo, et al., 2012, "UV to IR reflectance spectra of Antarctic carbonaceous chondrites to better characterize Marco Polo-R target." See: <smass.mit.edu/MarcoPolo/presentations/Trigo_MarcoPolo-R_Meudon2012.pdf>.
- B. Carry, 2012, "Roadmap for characterization of Marco Polo-R targets." See: <smass.mit.edu/MarcoPolo/presentations/Carry_MarcoPolo-R_Meudon2012.pdf>.
Session 4. Mission information.
- A. Cheng, L. Benner, R. Binzel, et al., 2012, "Physical characterization of MarcoPolo-R targets." See: <smass.mit.edu/MarcoPolo/presentations/Cheng_MarcoPolo-R_Meudon2012.pdf>.
- D. Koschny, 2012, "MarcoPolo-R programmatics, science requirements, and engineering requirements for target characterisation." See: <smass.mit.edu/MarcoPolo/presentations/Detlef_MarcoPolo-R_Meudon2012.ppt>.

2012, Jan 15

Asteroid 2012 BK14 (H = 27.5 mag, D ≈ 10 m) passed Earth at a nominal miss distance of 4.3 LD. Minimum miss distance 0.1 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2012+BK14+&orb=1>.

2012, Jan 16-17

NEOShield Kick-off Meeting, Berlin (Germany), 16-17 January 2012. See: 17 November 2011, and <www.dlr.de/dlr/en/desktopdefault.aspx/tabid-10081/151_read-2640/year-2012/>, <www.dlr.de/dlr/en/desktopdefault.aspx/tabid-10081/151_read-2640/>, <www.astrium.eads.net/node.php?articleid=8210>, <www.neoshield.net/en/index.htm>.
Ref:
- A.W. Harris, M.A. Barucci, J.L. Cano, et al., 15 September 2012, Acta Astronautica, online, "The European funded NEOShield project: A global approach to Near-Earth Object impact threat mitigation." See: <elib.dlr.de/70019/1/NEOShield_paper_pdc11.pdf>, <www.sciencedirect.com/science/article/pii/S0094576512003360>.
- A.W. Harris, L. Drube, NEOShield Consortium, October 2012, American Astronomical Society, DPS meeting #44, #210.05, "The NEOShield project: understanding the mitigation-relevant physical properties of potentially hazardous asteroids." See: <adsabs.harvard.edu/abs/2012DPS....4421005H>.
See also: <www.bbc.co.uk/news/science-environment-16633217>, <www.bbc.co.uk/news/science-environment-16651642>, <bit.ly/zduUOb>, <http://www.space.com/14370-asteroid-shield-earth-threat-protection-meeting.html>, <en.wikipedia.org/wiki/NEOShield>.

2012, Jan 17

M. Wall, 2012, Space.com, 17 January 2012, "Rare Mars rocks crashed to Earth in July." Meteorite fragments (7 kg) originating from Mars, found near Tissint (Morocco), three months after fireball seen 18 July 2011 over Tata (Morocco). See: <www.space.com/14268-rare-mars-meteorite-rocks-tissint.html>.
See also: <www.space.com/20426-mercury-meteorite-discovery-messenger.html>

2012, Jan 17-18

Sixth NASA Small Bodies Assessment Group meeting, 17-18 January, 2012, Washington (DC, USA). See: <www.lpi.usra.edu/sbag/>.
Presentations:
- D.S. Lauretta, B.E. Clark, 2012, "OSIRIS-REx." See: <www.lpi.usra.edu/sbag/meetings/jan2012/presentations/1000_Clark.pdf>.
- M.A. Barucci, A. Cheng, 2012, "Status of Marco Polo-R. Near Earth Asteroid sample return mission." See: <www.lpi.usra.edu/sbag/meetings/jan2012/presentations/1315_Cheng.pdf >.
- M. Zolensky, 2012, "Hayabusa sample preliminary analysis." <www.lpi.usra.edu/sbag/meetings/jan2012/presentations/1330_Zolensky.pdf >.

2012, Jan 20

Asteroid 2012 BV1 (H = 31.0 mag, D ≈ 3 m) passed Earth at a nominal miss distance of 0.8 LD. Minimum miss distance 0.8 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2012+BV1+&orb=1>.

2012, Jan 27

Asteroid 2012 BX34 (H = 27.6 mag, D ≈ 10 m) passed Earth at a nominal miss distance of 0.17 LD (= 10.3 REarth from the geocenter). Minimum miss distance 0.17 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2012+BX34+&orb=1>, <en.wikipedia.org/wiki/2012_BX34>.
See also: <www.space.com/14373-asteroid-2012-bx34-earth-flyby.html>, <www.universetoday.com/93177/2012-bx34-behind-the-scenes-in-the-discovery-of-a-near-earth-asteroid/>.
See also: 27 January 1959.

2012, Jan 31

Asteroid 433 Eros (1898 DQ, H = 11.16 mag, D = 34.4 × 11.2 × 11.2 km, orbital P = 1.76 yr, Amor asteroid), passed Earth at a nominal miss distance of 69.5 LD (= 0.18 AU).
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=1898+DQ&orb=1>, <en.wikipedia.org/wiki/433_Eros>.
See also: <www.universetoday.com/93101/asteroid-to-make-closest-approach-since-1975/>, <transitofvenus.nl/wp/getting-involved/eros-and-the-solar-parallax/>, <http://www.skyandtelescope.com/astronomy-news/observing-news/the-eros-parallax-project/>, <www.space.com/14472-asteroid-eros-earth-flyby-skywatching.html>.

2012, Feb

N. deGrasse Tyson, A. Lang, 2012, Space Chronicles - Facing the Ultimate Frontier (New York: Norton & Co). See: <books.wwnorton.com/books/Space-Chronicles/>.
See also: <www.npr.org/2012/02/27/147351252/space-chronicles-why-exploring-space-still-matters>.

2012, Feb

J.P. Sanchez, C.R. McInnes, 2012, Advances in Space Research, 49, 667, "Synergistic approach of asteroid exploitation and planetary protection." See: <adsabs.harvard.edu/abs/2012AdSpR..49..667S>.

2012, Feb

M. Todd, P. Tanga, D.M. Coward, M.G. Zadnik, 2012, Monthly Notices Royal Astronomical Society ( Letters), 420, L28, "An optimal Earth Trojan asteroid search strategy." See: <adsabs.harvard.edu/abs/2012MNRAS.420L..28T>.

2012, Feb 1-3

Workshop on the Early Solar System Bombardment II, Houston (TX, USA), 1-3 February 2012. See: <www.lpi.usra.edu/meetings/bombardment2012/>.
Among the presentations:
- W.F. Bottke, D. Vokrouhlicky, D. Minton, et al., 2012, LPI Contribution No. 1649, p.6-7, "The Great Archean Bombardment." See: <adsabs.harvard.edu/abs/2012LPICo1649....6B>.
- S. Goderis, J. Belza, Ph. Claesy, 2012, LPI Contribution No. 1649, p.26-27, "The impact cratering record for clues on the rate of collisions and provenance." See: <adsabs.harvard.edu/abs/2012LPICo1649...26G>.
- B.C. Johnson, H.J. Melosh, 2012, LPI Contribution No. 1649, p.32-33, "New estimates for the number of large impacts throughout Earth's history." See: <adsabs.harvard.edu/abs/2012LPICo1649...32J>.
- C. Koeberl, 2012, LPI Contribution No. 1649, p.40, "Search for a geochemical record of the Late Heavy Bombardment on Earth." See: <adsabs.harvard.edu/abs/2012LPICo1649...40K>.
- S. Marchi, W.F. Botke, D.A. Kring, A. Morbidelli, 2012, LPI Contribution No. 1649, p.45-46, "Two populations of early lunar impactors as recorded in its ancient crater population." See: <adsabs.harvard.edu/abs/2012LPICo1649...45M>.
- A. Morbidelli, S. Marchi, W.F. Bottke, 2012, LPI Contribution No. 1649, p.53-54, "The sawtimeline of the first billon year of lunar bombardment." See: <adsabs.harvard.edu/abs/2012LPICo1649...53M>.
- N. Schmedemann, T. Kneissl, G. Michael, et al., 2012, LPI Contribution No. 1649, p.75-76, "Crater size-frequency distributions and chronologies of asteroids." See: <adsabs.harvard.edu/abs/2012LPICo1649...75S>.

2012, Feb 5

BBC Four, 5 February 2012, 00:35, "Asteroids – the Good, the Bad and the Ugly." See: <www.bbc.co.uk/programmes/b00vv0w8>.

2012, Feb 13-15

UN - Committee on the Peaceful Uses of Outer Space (UN-COPUOS) Scientific and Technical SubCommittee, 49th session, in Vienna (Austria). WG NEO and Action Team 14 on NEOs did meet, chaired by Sergio Camacho (Mexico).
See: <www.unoosa.org/oosa/en/COPUOS/stsc/2012/index.html>, <www.oosa.unvienna.org/pdf/limited/c1/AC105_C1_L310E.pdf>, <www.oosa.unvienna.org/pdf/reports/ac105/AC105_1001E.pdf >.
Technical presentations:
- L. Johnson, 2012, "Near Earth Object Observation Program. Close approaches of 2011." See: <www.unoosa.org/pdf/pres/stsc2012/tech-35E.pdf>.
- J. Prado, 2012, "The case of Apophis." See: <www.unoosa.org/pdf/pres/stsc2012/tech-36E.pdf>.
- R.A. Williamson, 2012, "NEOs, the media, and risk communication. Report of a workshop." See: <www.unoosa.org/pdf/pres/stsc2012/tech-46E.pdf>.
See also: <www.space.com/14683-big-asteroid-2011-ag5-threat-earth.html>.

2012, Feb 16

Asteroid 2012 DA14 (H = 24.1 mag, D ≈ 40 × 20 m), discovered by the Spanish Observatorio Astronomico de la Sagra, passed Earth at a nominal miss distance of 6.78 LD. Minimum miss distance 6.78 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2012+DA14&orb=1>.
See also: 17 February 1918, 19 August 2004, 15 February 2013, 15 February 2046, 15 February 2087.

2012, Feb 20

Asteroid 2012 DY13 (H = 28.0 mag, D ≈ 9 m) passed Earth at a nominal miss distance of 0.28 LD. Minimum miss distance 0.28 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2012+DY13+&orb=1>.
See also: 20 February 1922.

2012, Feb 27

L. David, 2012, Space.com, 27 February 2012, "Big asteroid 2011 AG5 could pose threat to Earth in 2040." See: <www.space.com/14683-big-asteroid-2011-ag5-threat-earth.html>.
See also: <http://www.jpl.nasa.gov/wise/newsfeatures.cfm?release=2012-051>, <www.jpl.nasa.gov/news/news.cfm?release=2012-051>, <www.jpl.nasa.gov/asteroidwatch/newsfeatures.cfm?release=2012-051>, <www.jpl.nasa.gov/news/news.cfm?release=2012-051>, <www.space.com/14782-asteroid-threat-earth-impact-2011ag5.html>, <blogs.discovermagazine.com/badastronomy/files/2012/03/schweikart_letter_NASA_AG5.pdf>, <www.space.com/14872-asteroid-2011-ag5-earth-impact.html>.

2012, Mar

P.B. Babadzhanov, I.P. Williams, G.I. Kokhirova, 2012, Monthly Notices Royal Astronomical Society, 420, 2546, "Near-Earth object 2004 CK39 and its associated meteor showers." See: <adsabs.harvard.edu/abs/2012MNRAS.420.2546B>.

2012, Mar

A.S. Betzler, E.P. Borges, 2011, Astronomy & Astrophysics, 539, 158, "Non-extensive distributions of rotation periods and diameters of asteroids." See <adsabs.harvard.edu/abs/2012A%26A...539A.158B>.
The authors argue that the number of NEAs with D > 1 km is 994 ± 30.

2012, Mar

M. Ćuk, 2012, Icarus, 218, 69, "Chronology and sources of lunar impact bombardment." See: <adsabs.harvard.edu/abs/2012Icar..218...69C>.

2012, Mar

P.A. Bland, P. Spurný, A.W.R. Bevan, et al., 2012, Australian Journal of Earth Sciences, 59, 177, "The Australian Desert Fireball Network: a new era for planetary science." See: <adsabs.harvard.edu/abs/2012AuJES..59..177B>.
See also: <www3.imperial.ac.uk/desertfireballnetwork>.

2012, Mar

J. Fang, J.-L. Margot, 2012, Astronomical Journal, 143, 59, "The role of Kozai cycles in near-Earth binary asteroids." See: <adsabs.harvard.edu/abs/2012AJ....143...59F>.

2012, Mar

M. Granvik, J. Vaubaillon, R. Jedicke, 2012, Icarus, 218, 262, "The population of natural Earth satellites." See: <adsabs.harvard.edu/abs/2012Icar..218..262G>.
See also: <www.ifa.hawaii.edu/info/press-releases/minimoons/>, <www.space.com/15151-earth-multiple-moons-asteroids.html>.

2012, Mar

D. Jewitt, 2012, Astronomical Journal, 143, 66, "The active asteroids." See: <adsabs.harvard.edu/abs/2012AJ....143...66J>.

2012, Mar 1

Asteroid 2012 EZ1 (H = 28.8 mag, D ≈ 6 m) passed Earth at a nominal miss distance of 0.6 LD. Minimum miss distance 0.6 LD. See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2012+EZ1&orb=1>.

2012, Mar 1

Oslo Meteorite. A piece of a meteorite crashed through the roof of a garden hut in the middle of Oslo (Norway). The rock weighing 585 grams, which split in two, probably detached from a meteorite observed over Norway on March 1. The meteorite was identified as a breccia, or a rock composed of broken fragments.
See: <www.newsinenglish.no/2012/03/12/meteorite-smashed-through-oslo-roof/>, <news.9msn.com.au/technology/8434050/meteorite-chunk-falls-on-oslo>, <www.space.com/14893-meteorite-crash-oslo-norway.html>.

2012, Mar 6

Asteroid 2008 EJ85 (H = 25.0 mag, D ≈ 35 m) passed Earth at a nominal miss distance of 9.1 LD. Minimum miss distance 0.8 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2008+EJ85+&orb=1>.

2012, Mar 7

J. Foust, 2012, SpaceRef, 7 March 2012, "Making the case for human missions to asteroids." See: <www.spaceref.com/news/viewnews.html?id=1620>.

2012, Mar 9

G.S. Collins, 2012, Science, 335, 1176, "Moonstruck magnetism." See: <www.sciencemag.org/content/335/6073/1176.summary>.
See also: <www.space.com/14836-asteroid-collision-moon-magnetism.html>.

2012, Mar 9

M.A. Wieczorek, B.P. Weiss, S.T. Stewart, 2012, Science, 335, 1212, "An impactor origin for lunar magnetic anomalies." See: <www.sciencemag.org/content/335/6073/1212>.
See also: <www.space.com/14836-asteroid-collision-moon-magnetism.html>.

2012, Mar 13

E. Nakamura, A. Makishima, T. Moriguti, et al., 2012, Proc. National Academy of Sciences, 109(11), E624, "Space environment of an asteroid preserved on micrograins returned by the Hayabusa spacecraft." See: <www.pnas.org/content/109/11/E624.full.pdf+html?sid=e9c82620-acc1-4ac9-a373-aebd661fa82d>.
See also: <www.space.com/14691-asteroid-impacts-hayabusa-meteorite-samples.html>, <adsabs.harvard.edu/abs/2012LPI....43.1375N>.

2012, Mar 19-23

43rd Lunar and Planetary Science Conference, 19-23 March 2012, The Woodlands (TX, USA). See: <www.lpi.usra.edu/meetings/lpsc2012/>.
Among the papers:
- P.A. Abell, B.W. Barbee, R.G. Mink, et al., 2012, LPI Contribution No. 1659, p.2842, "The Near-Earth Object Human Space Flight Accessible Targets Study (NHATS) list of Near-Earth Asteroids: identifying potential targets for future exploration." See: <adsabs.harvard.edu/abs/2012LPI....43.2842A>.
- M.A. Barucci, P. Michel, A. Cheng, et al., 2012, LPI Contribution No. 1659, p.1457, "MarcoPolo-R: Near Earth Asteroid sample return mission selected for ESA assessment study phase." See: <adsabs.harvard.edu/abs/2012LPI....43.1457B>.
- A. Bazso, 2012, LPI Contribution No. 1659, p.1809, "Lunar effects on close encounters of Near Earth Asteroids" See: <adsabs.harvard.edu/abs/2012LPI....43.1809B>.
- E.B. Bierhaus, L. Dones, 2012, LPI Contribution No. 1659, p.2451, "Cratering by impact ejecta, from Mercury to the asteroids." See: <adsabs.harvard.edu/abs/2012LPI....43.2451B>.
- R.P. Binzel, D. Polishook, F.E. DeMeo, et al., 2012, LPI Contribution No. 1659, p.2222, "Marco Polo-R target asteroid (175706) 1996 FG3: possible evidence for an annual thermal wave." See: <adsabs.harvard.edu/abs/2012LPI....43.2222B>.
- M. Bruck Syal, P.H. Schultz, D.S.P. Dearborn, R.A. Managan, 2012, LPI Contribution No. 1659, p.2480, "Porosity controls on asteroid defense strategies." See: <adsabs.harvard.edu/abs/2012LPI....43.2480B>.
- T.L. Dunn, T.H. Burbine, 2012, LPI Contribution No. 1659, p.2305, "Mineralogies of Near Earth Asteroids." See: <adsabs.harvard.edu/abs/2012LPI....43.2305D>.
- C.W. Hergenrother, D.J. Scheeres, M. Nolan, et al., 2012, LPI Contribution No. 1659, p.2219, "Lightcurve and phase function photometry of the OSIRIS-REx target (101955) 1999 RQ36." See: <adsabs.harvard.edu/abs/2012LPI....43.2219H>.
- K.R. Housen, K.A. Holsapple, 2012, LPI Contribution No. 1659, p.2539, "Deflecting asteroids by impacts: what is Beta?." See: <adsabs.harvard.edu/abs/2012LPI....43.2539H>.
- D.S. Lauretta, OSIRIS-REx Team, 2012, LPI Contribution No. 1659, p.2491, "An overview of the OSIRIS-REx asteroid sample return mission." See: <adsabs.harvard.edu/abs/2012LPI....43.2491L>.
- L.F. Lim, J.P. Emery, N.A. Moskovitz, M. Granvik, 2012, LPI Contribution No. 1659, id.2202, "The near-Earth encounter of 2005 YU55: thermal infrared observations from Gemini North." See: <adsabs.harvard.edu/abs/2012LPI....43.2202L>.
- J.F. McCarthy, 2012, LPI Contribution No. 1659, p.1016, "A low cost approach to close-up examination of multiple Near Earth Asteroids." See: <adsabs.harvard.edu/abs/2012LPI....43.1016M>.
- N.A. Moskovitz, B. Yang, L.F. Lim, et al., 2012, LPI Contribution No. 1659, p.2080, "The near-Earth encounter of asteroid 2005 YU55: visible and near-infrared spectroscopy." See: <adsabs.harvard.edu/abs/2012LPI....43.2080M>.
- A.S. Rivkin, E.S. Howell, F.E. DeMeo, et al., 2012, LPI Contribution No. 1659, p.1537, "New observations and proposed meteorite analogs of the MarcoPolo-R target asteroid (175706) 1996 FG3." See: <adsabs.harvard.edu/abs/2012LPI....43.1537R>.
- I.M. Tielieusova, D.F. Lupishko, 2012, LPI Contribution No. 1659, p.1491, "The YORP-effect and axis rotation of Near-Earth Asteroids." See: <adsabs.harvard.edu/abs/2012LPI....43.1491T>.

2012, Mar 20

Website tool made available by the NASA/JPL Near-Earth Object Program Office, for identifying mission-accessible Near-Earth Asteroids and their next observing opportunities: the NASA Near-Earth Object Human Space Flight Accessible Targets Study (NHATS). See: <neo.jpl.nasa.gov/news/nhats.html>.

2012, Mar 26, 05:51

Asteroid 2012 FP35 (H = 27.9 mag, D ≈ 9 m) passed Earth at a nominal miss distance of 0.4 LD. Minimum miss distance 0.4 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2012+FP35+&orb=1>.
See also: <www.space.com/15043-small-asteroids-earth-close-shave.html>.

2012, Mar 26

3rd MarcoPolo-R symposium Scientific objectives of MarcoPolo-R near-Earth asteroid sample return mission, Manchester (UK), 26 March 2012. See: <www.oca.eu/MarcoPolo-R/Workshops/WorkshopsMarcoPolo-R.html>.

2012, Mar 26, 17:09

Asteroid 2012 FS35 (H = 30.3 mag, D ≈ 3 m) passed Earth at a nominal miss distance of 0.168 LD (= 10.1 REarth from the geocenter). Minimum miss distance 0.167 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2012+FS35+&orb=1>.
See also: <www.space.com/15043-small-asteroids-earth-close-shave.html>, and 25 March 2072.

2012, Mar 27

I. Israde-Alcántara, J.L. Bischoff, G. Domínguez-Vázquez, et al., 2012, Proceedings of the National Academy of Sciences, 109(13), 4723, "Evidence from central Mexico supporting the Younger Dryas extraterrestrial impact hypothesis." See: <www.pnas.org/content/109/13/E738.full.pdf+html?sid=aaa1f113-bd1c-44fa-8d8b-8a2fd5ab33e8>.
See also: <www.space.com/14793-comet-earth-impact-younger-dryas.html>.

2012, Mar 31

First light of first telescope of the Las Cumbres Observatory Global Telescope (LCOGT) network, Goleta (CA, USA). Eventually, the LCOGT network will deploy two or three identical 1-metre telescopes, each costing about US$1 million, at observatories in Hawaii, Chile, South Africa, Australia and the Canary Islands. LCOGT also has two 2-metre robotic Faulkes telescopes in Australia and Hawaii. See: <lcogt.net/>.
See also: <www.nature.com/news/global-observatory-sees-first-light-1.10384>,  <adsabs.harvard.edu/abs/2012DPS....4421516L>.

2012, Apr

M.A. Barucci, A.F. Cheng, P. Michel, et al. 2011, Experimental Astronomy, 33, 645, "MarcoPolo-R near earth asteroid sample return mission." See: <adsabs.harvard.edu/abs/2012ExA....33..645B>.

2012, Apr

G. Cremonese, P. Borin, E. Martellato, et al., 2012, Astrophysical Journal (Letters), 749, L40, "New calibration of the micrometeoroid flux on Earth." See: <adsabs.harvard.edu/abs/2012ApJ...749L..40C>.

2012, Apr

T.M. Eneev, R.Z. Akhmetshin, G.B. Efimov, 2012, Cosmic Research, 50, 93, "On the asteroid hazard." See: <adsabs.harvard.edu/abs/2012CosRe..50...93E>.

2012, Apr

S. Greenstreet, B. Gladman, H. Ngo, et al., 2012, Astrophysical Journal (Letters), 749, L39, "Production of Near-Earth Asteroids on retrograde orbits." See: <adsabs.harvard.edu/abs/2012ApJ...749L..39G>.

2012, Apr

A.W. Harris, G.B. Valsecchi, D. Morrison, 2012, in: I.F. Corbet (ed.), Reports on Astronomy 2009-2012, IAU Transactions XXVIIIA (Cambridge: CUP), p.141, "Working Group: Near-Earth Objects."

2012, Apr

S.V. Karashevic, A.V. Devyatkin, I.A. Vereshchagina, et al., 2012, Solar System Research, 46, 130, "Astrometric and photometric studies of the 2009 WZ104 [PHA] asteroid as it approached the Earth."
See: <adsabs.harvard.edu/abs/2012SoSyR..46..130K>.

2012, Apr

V.A. Shor, Yu. A. Chernetenko, O.M. Kochetova, N.B. Zheleznov, 2012, Solar System Research, 46, 119, "On the impact of the Yarkovsky effect on Apophis' orbit." See: <adsabs.harvard.edu/abs/2012SoSyR..46..119S>.

2012, Apr

K.J. Walsh, M. Delbò, M. Mueller, R.P. Binzel, F.E. DeMeo, 2012, Astrophysical Journal, 748, 104, "Physical characterization and origin of binary Near-Earth Asteroid (175706) 1996 FG3." See: <adsabs.harvard.edu/abs/2012ApJ...748..104W>.

2012, Apr 1

S. Marchi, W.F. Bottke, D.A. King, A. Morbidelli, 2012, Earth and Planetary Science Letters, 325-326, 27, "The onset of the lunar cataclysm as recorded in its ancient crater populations."
See: <www.sciencedirect.com/science/article/pii/S0012821X12000374>.
See also: <lunarscience.nasa.gov/articles/nlsi-scientists-shed-light-moons-impact-history/>.

2012, Apr 1

Asteroid 2012 EG5 (H = 24.3 mag, D ≈ 50 m) passed Earth at a nominal miss distance of 0.6 LD. Minimum miss distance 0.6 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2012+EG5+&orb=1>.
Ref:
- M. Hicks, S. Teague, C. Strojia, 2012, The Astronomer's Telegram, #4016, "Optical photometry of 2012 EG5: constraints on taxonomy and spin rate." See: <adsabs.harvard.edu/abs/2012ATel.4016....1H>.
See also: <www.space.com/15121-april-fools-day-asteroid-earth-flyby.html>.

2012, Apr 15

The Chinese spacecraft Chang'e-2 departed from L2 and began a mission to asteroid 4179 Toutatis (1989 AC, H = 15.3 mag, D = 4.6×2.4×1.9 km, NEA, PHA). Chang'e 2 was launched on 1 October 2010 for a lunar survey. On 8 June 2011, Chang'e-2 completed its extended mission, and left lunar orbit for the L2 Lagrangian point, to test the Chinese tracking and control network. The spacecraft is expected to make a flyby of Near-Earth Asteroid 4179 Toutatis on 13 December 2012.
See: <en.wikipedia.org/wiki/Chang'e_2>.
Ref:
- R. Stone, 2012, Science, 29 July 2012, "A new dawn for China's space scientists." See: <www.sciencemag.org/content/336/6089/1630.summary?sid=87f26ee0-0564-40b0-9367-95573a612cfd>.

2012, Apr 17

Asteroid 2012 HG2 (H = 27.0 mag, D ≈ 15 m) passed Earth at a nominal miss distance of 1.2 LD. Minimum miss distance 1.2 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2012+HG2+&orb=1>.
See also: 13 February 2047.

2012, Apr 19

Asteroid 2012 HM13 (H = 28.0 mag, D ≈ 9 m) passed Earth at a nominal miss distance of 0.7 LD. Minimum miss distance 0.7 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2012+HM13+&orb=1>.

2012, Apr 22

California/Nevada Fireball and Airburst, Sutter's Mill Meteorite. A bright ball of light traveling east to west was seen over the skies of central/northern California (USA) on April 22. Estimates of the object give it the size of a minivan, with a weight of ~70 metric tons and at the time of disintegration releasing an energy equivalent to a 5-kiloton explosion. See: <http://www.jpl.nasa.gov/news/news.php?release=2012-114>.
See also: <www.space.com/15654-meteorite-hunt-california-fireball.html>, <www.space.com/15666-meteorite-fragments-searched-sierra-nevada-mountains-video.html>, <http://www.rgj.com/article/20120423/NEWS/304230032/Scientist-says-sound-signal-from-exploding-meteor-lasted-18-minutes?nclick_check=1>, <science.kqed.org/quest/2012/12/20/stardust-and-sunbreath-in-the-sutters-mill-meteorite/>, <en.wikipedia.org/wiki/List_of_meteor_air_bursts>.
Ref:
- P. Jenniskens, B. Girten, D. Sears, et al., 2012, Meteoritics and Planetary Science Supplement, 75, 5376, "Recovery of the Sutter's Mill Meteorite." See: <adsabs.harvard.edu/abs/2012M%26PSA..75.5376J>.
- E. Underwood, Dec. 2012, Science, 338, 1521, "Sutter's Mill Meteorite produces mother lode of research." See: <www.sciencemag.org/content/338/6114/1521>.
- P. Jenniskens, M.D. Fries, Qing-Zhu Yin, et al., (the Sutter's Mill Meteorite Consortium), Dec. 2012, Science, 338, 1583, "Radar-enabled recovery of the Sutter's Mill Meteorite, a carbonaceous chondrite regolith breccia." See: <www.sciencemag.org/content/338/6114/1583.abstract>.

2012, Apr 24

Planetary Resources Inc. A new company called Planetary Resources, Inc. announced its formation and goals on April 24, 2012 at the Museum of Flight in Seattle (WA, USA).  Press reports indicate that backers of the company including movie director and explorer James Cameron; Google executives Larry Page and Eric Schmidt; space entrepreneurs Eric Anderson and Peter Diamandis; and former Microsoft executive Charles Simonyi.  The company reportedly plans to mine asteroids.
See: <www.museumofflight.org/press/space-exploration-company-make-major-announcement-museum-april-24-expand-earths-resource-bas-0>, <www.planetaryresources.com/>, <www.planetaryresources.in/>, <www.youtube.com/watch?v=s15PeKzmcU4&list=PL96FC1A30D88E0638&feature=plpp_play_all>, <www.youtube.com/watch?v=t0c9oZh4vTo>, <www.space.com/15405-asteroid-mining-feasibility-study.html>, <www.space.com/15419-asteroid-mining-billionaires-private-spaceflight.html>, <http://www.spacepolicyonline.com/news/planetary-resources-announces-crowdsourcing-campaign>, <edition.cnn.com/2012/04/25/showbiz/celebrity-news-gossip/james-cameron-king-of-the-world/>, <www.thespacereview.com/article/2074/1>, <www.theage.com.au/technology/sci-tech/australia-to-miss-out-as-billionaires-shoot-for-the-stars-20120501-1xvyf.html>, <http://news.thomasnet.com/imt/2012/05/09/celebrity-billionaires-plan-to-mine-asteroids-for-profit-and-prestige>, <www.dailymail.co.uk/sciencetech/article-2137806/Legal-expert-says-James-Camerons-multi-billion-space-mining-venture-hit-lawsuits.html>, <www.nature.com/news/space-miners-seek-riches-in-nearby-asteroids-1.10513>, <www.nature.com/news/let-s-mine-asteroids-for-science-and-profit-1.10733>, <www.planetaryresources.com/?utm_expid=58982100-0>, <www.space.com/16273-extraterrestrial-mining-asteroids-moon.html>, <www.lpi.usra.edu/sbag/meetings/jul2012/presentations/TUES_1615_Lewicki%20PRI.pdf>, <www.denverpost.com/business/ci_21258980/asteroid-mining-venture-planetary-resources-adds-billionaire-investors>, <www.businessweek.com/news/2012-08-06/google-backed-asteroid-mining-venture-adds-billionaire-investors>, <www.space.com/19373-planetary-resources-unveils-asteroid-hunting-arkyd-telescope-video.html>, <http://www.skyandtelescope.com/astronomy-news/asteroid-mining-forfunandprofit/>, <www.space.com/20817-asteroid-mining-satellite-test-flight.html>, <www.space.com/21724-asteroid-mining-actor-rainn-wilson.html>, <www.prnewswire.com/news-releases/planetary-resources-calls-on-citizens-of-earth-to-aid-in-planetary-defense-213357051.html>, <en.wikipedia.org/wiki/Planetary_Resources>.

2012, Apr 26

H. Thompson, 2012, Nature, 484, 429, "Ancient asteroids kept on coming. Two-billion-year barrage hit Earth when life was beginning." See: <adsabs.harvard.edu/abs/2012Natur.484..429T>.

2012, May

P. Bodas, 2012, in: American Astronomical Society, DDA meeting #43, #7.10, "Keyholes and Jabbas: the role of pre-impact close approaches in asteroid deflection." See: <adsabs.harvard.edu/abs/2012DDA....43.0710C>.

2012, May

R. Dvorak, C. Lhotka, L. Zhou, 2012, Astronomy & Astrophysics, 541, 127, "The orbit of 2010 TK7: possible regions of stability for other Earth Trojan asteroids." See: <adsabs.harvard.edu/abs/2012A%26A...541A.127D>.

2012, May

D. Farnocchia, F. Bernardi, G.B. Valsecchi, 2012, Icarus, 219, 41, "Efficiency of a wide-area survey in achieving short- and long-term warning for small impactors." See: <adsabs.harvard.edu/abs/2012Icar..219...41F>.

2012, May

T. Goldin, 2012, Nature Geoscience, 5, 309, "Earth's ancient catastrophes." See: <www.nature.com/ngeo/journal/v5/n5/full/ngeo1467.html>.

2012, May

M. Micheli, D.J. Tholen, G.T. Elliott, 2012, New Astronomy, 17, 446, "Detection of radiation pressure acting on 2009 BD." See: <adsabs.harvard.edu/abs/2012NewA...17..446M>.

2012, May

S.P. Naidu, J.L. Margot, M.W. Busch, et al., 2012, American Astronomical Society, DDA meeting #43, #7.07, "Dynamics of binary Near-Earth Asteroid system (35107) 1991 VH." See: <adsabs.harvard.edu/abs/2012DDA....43.0707N>.

2012, May

S.A. Naroenkov, B.M. Shustov, 2012, Cosmic Research, 50(3), 221, "Distribution of velocities of potentially hazardous objects." See: <adsabs.harvard.edu/abs/2012CosRe..50..221N>.

2012, May

C. Nugent, J.L. Margot, S.R. Chesley, et al., 2012, American Astronomical Society, DDA meeting #43, #7.03, "Detection of semi-major axis drifts in 55 Near-Earth Asteroids." See: <adsabs.harvard.edu/abs/2012DDA....43.0703N>.

2012, May

V. Reddy, M.J. Gaffey, P.A. Abell, et al., 2012, Icarus, 219, 382, "Constraining albedo, diameter and composition of near-Earth asteroids via near-infrared spectroscopy." See: <adsabs.harvard.edu/abs/2012Icar..219..382R>.

2012, May

R. Rudawska, J. Vaubaillon, P. Atreya, 2012, Astronomy & Astrophysics, 541, 2, "Association of individual meteors with their parent bodies." See: <adsabs.harvard.edu/abs/2012A%26A...541A...2R>.

2012, May

D. Vokrouhlický, D. Nesvorný, 2012, Astronomy & Astrophysics, 541, 109, "Sun-grazing orbit of the unusual near-Earth object 2004 LG." See: <adsabs.harvard.edu/abs/2012A%26A...541A.109V>.

2012, May 1

S.L. Brusatte, R.J. Butler, A. Prieto-Márquez, M.A. Norell, 2012, Nature Communications, 3, no. 804, "Dinosaur morphological diversity and the end-Cretaceous extinction." See: <www.nature.com/ncomms/journal/v3/n5/full/ncomms1815.html >.

2012, May 3

W.F. Bottke, D. Vokrouhlický, D. Minton, 2012, Nature, 485, 78, "An Archaean heavy bombardment from a destabilized extension of the asteroid belt." See: <adsabs.harvard.edu/abs/2012Natur.485...78B>.

2012, May 3

F.T. Kyte, 2012, Nature, 485, 44, "Solar System: focus on ancient bombardment." See: <adsabs.harvard.edu/abs/2012Natur.485...44K>.

2012, May 3

B.C. Johnson, H.J. Melosh, 2012, Nature, 485, 75, "Impact spherules as a record of an ancient heavy bombardment of Earth." See: <adsabs.harvard.edu/abs/2012Natur.485...75J>.

2012, May 11

C.T. Russell, C.A. Raymond, A. Coradini, et al., 2012, Science, 336, 684, "Dawn at Vesta: testing the protoplanetary paradigm." See: <www.sciencemag.org/content/336/6082/684>.

2012, May 13

Asteroid 2012 JU (H = 28.3 mag, D ≈ 8 m) passed Earth at a nominal miss distance of 0.5 LD. Minimum miss distance 0.5 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2012+JU&orb=1>.
See also: <www.space.com/15676-asteroid-earth-close-flyby-2012ju.html>.

2012, May 15

S.J. Robbins, B.M. Hynek, 2012, Journal of Geophysical Research, 117, E5, "A new global database of Mars impact craters ≥1 km: 1. Database creation, properties, and parameters." See: <www.agu.org/pubs/crossref/2012/2011JE003966.shtml>.
See also: <www.space.com/16153-mars-impact-crater-map.html>.

2012, May 16-20

International conference on Asteroids, Comets, Meteors, XI, Niigata (Japan), 16-20 May 2012. See: <chiron.mtk.nao.ac.jp/ACM2012/>.
Among the papers:
- D. Bancelin, D. Hestroffer, W. Thuillot, 2012, "Near Earth Asteroid astrometry and orbit propagation" [#6238]. See: <www.lpi.usra.edu/meetings/acm2012/pdf/6238.pdf>.
- L.A.M. Benner, 2012, "Radar reconnaissance of Near-Earth Asteroids" [#6402]. See: <www.lpi.usra.edu/meetings/acm2012/pdf/6402.pdf>.
- L.A.M. Benner, M. Brozovic, J.D. Giorgini, 2012, "Arecibo and Goldstone radar observations of binary Near-Earth Asteroid and Marco Polo-R mission target (175706) 1996 FG3" [#6403]. See: <www.lpi.usra.edu/meetings/acm2012/pdf/6403.pdf>.
- R.P. Binzel, F.E. DeMeo, M. Lockhart, et al., 2012, "Compositional distribution of the Near-Earth Object population" [#6433]. See: <www.lpi.usra.edu/meetings/acm2012/pdf/6433.pdf >.
- B. Bolin, R. Jedicke, M. Granvik, R. Wainscoat, 2012, "Detecting Earth’s moons" [#6359]. See: <www.lpi.usra.edu/meetings/acm2012/pdf/6359.pdf>.
- J. Borovička, A. Igaz, P. Spurný, J. Tóth, 2012, Analysis of atmospheric fragmentation during the Košice Meteorite Fall and the inferred meteoroid strength" [#6067]. See: <www.lpi.usra.edu/meetings/acm2012/pdf/6067.pdf>.
- M. Brozovic, L.A.M. Benner, M.C. Nolan, S.J. Ostro, et al., 2012, "Shape modeling of Near-Earth Asteroid (53319) 1999 JM8 from Goldstone and Arecibo radar images" [#6183]. See: <www.lpi.usra.edu/meetings/acm2012/pdf/6183.pdf>.
- M.W. Busch, L.A.M. Benner, M. Brozovic, et al., 2012, "Shape and spin of Near-Earth Asteroid 308635 (2005 YU55) from radar images and speckle tracking" [#6179]. See: <www.lpi.usra.edu/meetings/acm2012/pdf/6179.pdf>.
- C.R. Chapman, 2012, "Threatened impact of 2011 AG5: a potential deflection campaign should be analyzed now" [#6465]. See: <www.lpi.usra.edu/meetings/acm2012/pdf/6465.pdf>.
- H. Chennaoui Aoudjehane, N. Larouci, D., Baratoux, 2012, "Meteors and meteorite recovery in Morocco" [#6254]. See: <www.lpi.usra.edu/meetings/acm2012/pdf/6254.pdf>.
- S.R. Chesley, M.C. Nolan, D. Farnocchia, et al., 2012, "The trajectory dynamics of Near-Earth Asteroid 101955 (1999 RQ36) [#6470]." See: <www.lpi.usra.edu/meetings/acm2012/pdf/6470.pdf>, <www.jpl.nasa.gov/asteroidwatch/newsfeatures.cfm?release=2012-145>, <uanews.org/node/47370>, <www.space.com/15959-sunlight-pushes-earth-threatening-asteroids.html>.
-  P.W. Chodas, 2012, "Keyholes and Jabbas: the role of pre-impact close approaches in asteroid deflection" [#6471]. See: <www.lpi.usra.edu/meetings/acm2012/pdf/6471.pdf>.
- G. Drolshagen, E. Bassano, F. Bernardi, et al., 2012, "Precursor services for a Near-Earth Object segment of ESA’s Space Situational Awareness Programme" [#6229]. See: <www.lpi.usra.edu/meetings/acm2012/pdf/6229.pdf>.
- J.P. Emery, L.F. Lim, N.A. Moskovitz, 2012, "The near-Earth encounter of 2005 YU55: thermal inertia and inferred surface properties" [#6453]. See: <www.lpi.usra.edu/meetings/acm2012/pdf/6453.pdf>.
- C. I. Fuentes, M.M. Knight, D.E. Trilling, 2012, "The STEREO search for IEOs." [#6472]. See: <www.lpi.usra.edu/meetings/acm2012/pdf/6472.pdf>.
- C.W. Hergenrother, T. Kwiatkowski, A. Kryszczyńska, et al., 2012, "New results on rotation of very small Near-Earth Asteroids." [#6484]. See: <adsabs.harvard.edu/abs/2012LPICo1667.6484H>.
- A.R. Hildebrand, B. Gladman, E.F. Tedesco, et al., 2012, "A space-based, near-Sun survey to discover Atira and Aten orbital class Near-Earth Objects." [#6463]. See: <www.lpi.usra.edu/meetings/acm2012/pdf/6463.pdf>.
- K.A. Holsapple, K.R. Housen, 2012, "Studies of impacts: experimental and numerical simulations of cratering, disruptions and asteroid deflections." [#6367]. See: <www.lpi.usra.edu/meetings/acm2012/pdf/6367.pdf>.
- P. Jenniskens, M.H. Shaddad, Almahata Sitta Consortium, 2012, "Asteroid 2008 TC3: a review and a look forward" [#6211]. See: <www.lpi.usra.edu/meetings/acm2012/pdf/6211.pdf >.
- D. Lazzaro, T. Rodrigues, J.M. Carvano, et al., IMPACTON team, 2012, "The IMPACTON project: a new facility for NEOs studies in Brazil" [#6148]. See: <www.lpi.usra.edu/meetings/acm2012/pdf/6148.pdf>.
- L.F. Lim, J.P. Emery, N.A. Moskovitz, M. Granvik M., 2012, "The Near-Earth encounter of 2005 YU55: thermal infrared observations from Gemini North" [#6295]. See: <www.lpi.usra.edu/meetings/acm2012/pdf/6295.pdf>.
- D.F. Lupishko, I.M. Tielieusova, 2012, "Influence of the YORP-effect on axis rotation of Near-Earth Asteroids" [#6101]. See: <www.lpi.usra.edu/meetings/acm2012/pdf/6101.pdf>.
- W.J. Merline, J.D. Drummond, P.M. Tamblyn, et al., 2012, "Keck adaptive-optics imaging of Near-Earth Asteroid 2005_YU55 during its 2011 close flyby" [#6372]. See: <www.lpi.usra.edu/meetings/acm2012/pdf/6372.pdf>.
- T. Miyata, T.G. Mueller, S. Hasegawa, et al., 2012, "Thermal infrared observations of an asteroid 2005 YU55 during the closest approach" [#6260]. See: <www.lpi.usra.edu/meetings/acm2012/pdf/6260.pdf>.
- I.E. Molotov, V.M. Agapov, Yu. N. Krugly, L.V. Elenin, 2012, "ASPIN - asteroid research project of the ISON optical network" [#6408]. See: <www.lpi.usra.edu/meetings/acm2012/pdf/6408.pdf>.
- H.K. Moon, Y.J. Choi Y. J., M.  Ishiguro, 2012, "Round-the-clock survey of Small Solar System Bodies in the Southern Sky" [#6481]. See: <www.lpi.usra.edu/meetings/acm2012/pdf/6481.pdf>.
- N.A. Moskovitz, B. Yang, L.F. Lim, et al. 2012, "The Near-Earth encounter of 2005 YU55: time-resolved visible and near-infrared spectroscopy" [#6382]. See: <www.lpi.usra.edu/meetings/acm2012/pdf/6382.pdf>.
- S. Okumura, N. Takahashi, S. Nakano, et al., 2012, Spaceguard activity in Japan: past and future in Bisei Spaceguard Center" [#6274]. See: <www.lpi.usra.edu/meetings/acm2012/pdf/6274.pdf>.
- P. Spurny, P.A. Bland, J. Borovicka, et al., 2012, "The Mason Gully Meteorite Fall in SW Australia: fireball trajectory, luminosity, dynamics, orbit and impact position from photographic records." See: <adsabs.harvard.edu/abs/2012LPICo1667.6369S>.
- P. Spurny, J. Haloda, J. Borovicka, 2012, "Mystery of the Benesov Bolide revealed after 20 years" [#6143]. See: <www.lpi.usra.edu/meetings/acm2012/pdf/6143.pdf>.
- H. Svedhem, D. Koschny, 2012, "Searching for interior to Earth orbit asteroids (IEO’s) by using spacecraft star trackers" [#6371]. See: <www.lpi.usra.edu/meetings/acm2012/pdf/6371.pdf>.
- P.A. Taylor, E.S. Howell, M.C. Nolan, A.A. Thane, 2012, "The shape and spin distributions of Near-Earth Asteroids observed with the Arecibo radar system" [#6340]. See: <www.lpi.usra.edu/meetings/acm2012/pdf/6340.pdf>.
- J. Toth, J. Borovička, A. Igaz, et al., 2012, " The Košice Meteorite — recovery and analyses" [#6325]. See: <www.lpi.usra.edu/meetings/acm2012/pdf/6325.pdf>.
- D.E. Trilling, J.L. Hora, M. Mueller, et al., 2012, "ExploreNEOs: the Warm Spitzer Near Earth Object Survey" [#6485]. See: <www.lpi.usra.edu/meetings/acm2012/pdf/6485.pdf>.
- R.J. Wainscoat, R. Jedicke, L. Denneau, P. Veres, 2012, "The Pan-STARRS1 search for Near Earth Asteroids" [#6341]. See: <www.lpi.usra.edu/meetings/acm2012/pdf/6341.pdf>.
- B.D. Warner, R.D. Stephens, J.W. Brinsfield, et al., 2012, "CCD photometric observations of 2005 YU55 during the 2011 November flyby" [#6013]. See: <www.lpi.usra.edu/meetings/acm2012/pdf/6013.pdf>.
- D.K. Yeomans, B.W. Barbee, N. Melamed, 2012, et al., "New on-line tools for the human exploration and threat mitigation of Near-Earth Asteroids" [#6178]. See: <www.lpi.usra.edu/meetings/acm2012/pdf/6178.pdf>.
Summary:
- E.A. Smirnov, I.I. Shevchenko, April 2013, Solar System Research, 47, 141, "International forum "Asteroids, Comets, Meteors 2012"." See: <adsabs.harvard.edu/abs/2013SoSyR..47..141S>.

2012, May 17

Asteroid 2012 KA (H = 28.6 mag, D ≈ 7 m) passed Earth at a nominal miss distance of 0.6 LD. Minimum miss distance 0.6  LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2012+KA+&orb=1>.

2012, May 19

Asteroid 2012 KK37 (H = 25.7 mag, D ≈ 25 m) passed Earth at a nominal miss distance of 2.3 LD. Minimum miss distance 0.2 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2012+KK37+&orb=1>.

2012, May 22-24

A. Pitz, B. Kaplinger, G. Vardaxis, et al., 2012, in: 2012 AIAA/AAS Global Space Exploration Conference, 22-24 May 2012, Washington (DC, USA), GLEX-2012.06.3.2x12173, "Conceptual design of a Hypervelocity Asteroid Intercept Vehicle (HAIV) and its flight validation mission." See: <www.adrc.iastate.edu/files/2012/06/GLEX2012Paper.pdf>.

2012, May 24-28

International Space Development Conference, Washington, D.C. (USA), 24-28 May 2012. See: <isdc.nss.org/2012/>.
Among the papers:
- A. Globus, C. Cassell, S. Covey, et al., 2012, "Don’t send the astronauts to the asteroid. Bring the asteroid to the astronauts. A radical proposal for the planned 2025 asteroid visit" See: <space.alglobus.net/presentations/DraftAsteroidMiningTalk2012.pdf>.

2012, May 28

Asteroid 2012 KP24 (H = 26.4 mag, D ≈ 20 m) passed Earth at a nominal miss distance of 0.149 LD (= 9.0 REarth from the geocenter). Minimum miss distance 0.149 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2012+KP24+&orb=1>.
See also: <www.space.com/15891-85-foot-asteroid-zooms-earth-memorial-day-orbit-diagram-video.html>, <www.space.com/15895-double-asteroid-earth-flyby.html>,
See also: <blogs.discovermagazine.com/badastronomy/2012/05/25/small-asteroid-to-buzz-earth-on-may-28/>.
See also: 30 May 1939.

2012, May 29

AIDA study. The Asteroid Impact & Deflection Assessment (AIDA) mission is a joint study effort of ESA, JHU/APL, NASA, OCA and DLR. The mission design foresees two independent spacecraft, one impactor (DART) and one rendezvous probe (AIM). As in the separate DART and AIM studies, the target of this mission is the binary NEA system 65803 Didymos (1996 GT, H = 18.0 mag, D = 900 m, PHA). Foreseen launch: 2019. Rendez-vous: 2022.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=Didymos&orb=1>, <www.esa.int/esaMI/NEO/SEMH9CTWT1H_0.html>, <www.esa.int/esaMI/NEO/SEMAWBTWT1H_0.html><www.esa.int/Our_Activities/Technology/NEO/Asteroid_deflection_mission_seeks_smashing_ideas>, <ow.ly/h3BU0>.
Ref:
- A. Galvez, I. Carnelli, M. Fontaine, C. Corral Van Damme, 2012, European Planetary Science Congress September 2012, EPSC Abstracts, Vol. 7 EPSC2012-807, "Asteroid impact mission (AIM) & deflection assessment: an opportunity to understand impact dynamics and modelling." See: <meetingorganizer.copernicus.org/EPSC2012/EPSC2012-807.pdf>.
- A.F. Cheng, P. Michel, C. Reed, et al., 2012, European Planetary Science Congress September 2012, EPSC Abstracts, Vol. 7 EPSC2012-935-1, "DART: Double Asteroid Redirection Test." See: <meetingorganizer.copernicus.org/EPSC2012/EPSC2012-935-1.pdf >.
- A.F. Cheng, A. Rivkin, A. Galvez, et al., October 2012, American Astronomical Society, DPS meeting #44, #215.03, "AIDA: Asteroid Impact & Deflection Assessment." See: <adsabs.harvard.edu/abs/2012DPS....4421503C>.
See also: <www.space.com/19303-asteroid-deflection-europe-spacecraft.html>, <www.space.com/20341-asteroid-collision-aida-spacecraft-2022.html>.

2012, May 29

NASA Workshop on Potentially Hazardous Asteroid 2011 AG5, NASA GSFC, Greenbelt (MD, USA), 29 May 2012. See: <http://www.jpl.nasa.gov/news/news.php?release=2012-178>, <neo.jpl.nasa.gov/news/news175.html>, <neo.jpl.nasa.gov/neo/2011_AG5_Deflection_Study_report_13.pdf>,
<neo.jpl.nasa.gov/neo/2011_AG5_exec_summary.pdf>,<neo.jpl.nasa.gov/neo/2011_AG5_workshop_sum.pdf>, <neo.jpl.nasa.gov/neo/2011_AG5_LN_intro_wksp.pdf>.
See also:
<www.space.com/16169-earth-safe-asteroid-2011ag5-flyby.html>.

2012, May 29

Asteroid 2012 KT42 (H = 28.8 mag, D ≈ 6 m) passed Earth at a nominal miss distance of 0.054 LD (= 3.27 REarth from the geocenter). Minimum miss distance 0.054 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2012+KT42+&orb=1>.
See also: <www.space.com/15895-double-asteroid-earth-flyby.html>, <www.slashgear.com/recently-discovered-asteroid-passes-very-near-earth-29230628/>, <www.nature.com/news/astronomers-catch-video-of-near-miss-asteroid-1.10873>, <www.space.com/16347-close-asteroid-flyby-2012-kt42.html>.
See also: 3 December 1915, 4 December 1954.

2012, Jun

A.C.M. Correia, J. Laskar, 2012, Astrophysical Journal (Letters), 751, L43, "Impact cratering on Mercury: consequences for the spin evolution." See: <adsabs.harvard.edu/abs/2012ApJ...751L..43C>.

2012, Jun

O. Golubov, Y.N. Krugly, 2012, Astrophysical Journal (Letters), 752, L11, "Tangential component of the YORP effect." See: <adsabs.harvard.edu/abs/2012ApJ...752L..11G>.

2012, Jun

S.D.J. Gwyn, N. Hill, J.J. Kavelaars, 2012, Publications of the Astronomical Society of the Pacific, 124, 579, "SSOS: a moving-object image search tool for asteroid precovery." See: <adsabs.harvard.edu/abs/2012PASP..124..579G>.

2012, Jun

A. Mainzer, T. Grav, J. Masiero, et al., 2012, Astrophysical Journal, 752, 110, "Characterizing subpopulations within the Near Earth Objects with NEOWISE: preliminary results." See: <adsabs.harvard.edu/abs/2012ApJ...752..110M>.
See also: <http://www.jpl.nasa.gov/wise/newsfeatures.cfm?release=2012-138>, <www.space.com/15734-dangerous-asteroid-census-nasa-telescope.html>, <blogs.nature.com/news/2012/05/tally-of-potentially-hazardous-asteroids-doubles.html>.

2012, Jun

B. Rozitis, S.F. Green, 2012, Monthly Notices Royal Astronomical Society, 423, 367, "The influence of rough surface thermal-infrared beaming on the Yarkovsky and YORP effects." See: <adsabs.harvard.edu/abs/2012MNRAS.423..367R>.

2012, Jun

A. Spitz, 2012, ASP The Universe in the Classroom, No .80, "From vermin to destination: a mission to an asteroid." See: <www.astrosociety.org/education/publications/tnl/80/uitc80.pdf>.

2012, Jun 5

S.J. Robbins, B.M. Hynek, 2012, Journal of Geophysical Research, 117, E6, "A new global database of Mars impact craters ≥1 km: 2. Global crater properties and regional variations of the simple-to-complex transition diameter." See: <www.agu.org/pubs/crossref/2012/2011JE003967.shtml>.
See also: <www.space.com/16153-mars-impact-crater-map.html>.

2012, Jun 10-11

UN - Committee on the Peaceful Uses of Outer Space (UN-COPUOS, 55th session) and Action Team 14 on NEOs, chaired by Sergio Camacho (Mexico), did meet in Vienna (Austria). See: <www.oosa.unvienna.org/oosa/en/COPUOS/index.html>, <www.oosa.unvienna.org/pdf/gadocs/A_67_20E.pdf>.

2012, Jun 14

Asteroid 2012 LZ1 (H = 19.8 mag, D ≈ 1000 m, PHA) passed Earth at a nominal miss distance of 14.2 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2012+LZ1+&orb=1>.
Ref:
- M. Hicks, W. Smythe, T. Davtyan, et al., 2012, The Astronomer's Telegram, #4252, "Broadband photometry of 2012 LZ1: a large, dark Potentially Hazardous Asteroid." See: <adsabs.harvard.edu/abs/2012ATel.4252....1H>.
See also: <www.space.com/16131-huge-asteroid-flyby-2012-lz1-webcast.html>,
<www.space.com/16154-asteroid-2012-lz1-earth-flyby.html>,
<www.usra.edu/news/pr/2012/asteroid_LZ1/?tw_p=twt>, <www.space.com/16263-asteroid-2012lz1-size-earth-flyby.html>.

2012, Jun 15

K.H. Joy, M. Zolensky, K. Nagashima, et al., 2012, Science, 336, 1426, "Direct detection of projectile relics from the end of the Lunar Basin–forming epoch." See: <www.sciencemag.org/content/336/6087/1426.full.pdf?sid=7570bfbd-4f10-49c3-99d9-311eb8035157>.
See also: <www.space.com/15732-asteroid-impacts-moon-lunar-cataclysm.html>.

2012, Jun 21

Asteroid 2012 MF7 (H = 26.8 mag, D ≈ 15 m) passed Earth at a nominal miss distance of 0.8 LD. Minimum miss distance 0.8 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2012+MF7&orb=1>.

2012, Jun 23

Asteroid 1999 XL136 (H = 19.3 mag, D ≈ 500 m, PHA) passed Earth at a nominal miss distance of 4.5 LD. Minimum miss distance 4.5 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=1999+XL136&orb=1>.

2012, Jun 28

Sentinel Space Telescope Mission. The B612 Foundation announced plans to build, launch and operate the Sentinel Space Telescope Mission during a press conference at the Morrison Planetarium at the California Academy of Sciences in San Francisco (CA, USA).
From the press release: "Sentinel is a space-based infrared (IR) survey mission to discover and catalog 90 percent of the asteroids larger than 140 meters in Earth’s region of the solar system. The mission should also discover a significant number of smaller asteroids down to a diameter of 30 meters. Sentinel will be launched into a Venus-like orbit about the sun which significantly improves the efficiency of asteroid discovery during its 5.5 year mission. The spacecraft and instrument use high-heritage flight proven deep space systems, originally developed by NASA, to minimize technical and programmatic risks. These heritage missions include large space based telescopes (Spitzer, Kepler), a large format camera made up of many individual detectors (Kepler), and a cryogenically cooled instrument (Spitzer). By detecting and tracking nearly all of the Near Earth Objects greater than 50 meters in diameter, Sentinel will create a map of the solar system in Earth’s neighborhood enabling future robotic and manned exploration. The Sentinel data will also identify objects that are potentially hazardous to humans to provide an early warning to protect the Earth from impact."
Foreseen launch: 2018.
Ref:
- R. Schweickart, 15 February 2013, The Guardian, "Meteor and asteroid events give new focus for our vital Sentinel telescope."
See: <www.guardian.co.uk/commentisfree/2013/feb/15/meteor-strike-asteroid-pass-sentinel-telescope>.
- E.T. Lu, H. Reitsema, J. Troeltzsch, S. Hubbard, March 2013, New Space, 1, 42, "The B612 Foundation Sentinel Space Telescope." See: <online.liebertpub.com/doi/pdfplus/10.1089/space.2013.1500>.
See: <b612foundation.org/b612/>, <b612foundation.org/media/sentinelmission/>, <b612foundation.org/downloads/pressRelease_6_28.zip>, <b612web.ex3host.com/downloads/FactSheet.zip>, <b612web.ex3host.com/downloads/PRESSKIT.zip>, <us5.campaign-archive2.com/?u=bf912fc28576855153d8f5e1c&id=15db3ea5e1>, <www.lpi.usra.edu/sbag/meetings/jul2012/presentations/TUES_1545_Buie_B612>, <b612foundation.org/tedxmarinedsept2012/>.
See also:
23 January 2010,
<www.space.com/16214-deep-space-asteroid-telescope-announcement.html>, <www.space.com/16337-asteroid-telescope-deep-space-announcement.html>, <www.space.com/16338-sentinel-private-telescope-asteroids.html>, <blogs.discovermagazine.com/badastronomy/2012/06/28/privately-and-publicly-looking-for-earth-threatening-asteroids/>, <bit.ly/Ny0FnX>, <www.space.com/16345-private-foundation-gets-into-hunting-asteroids-business-video.html>, <news.nationalgeographic.com/news/2012/06/120628-first-private-asteroid-mission-sentinel-b612-nasa-space-science/>, <www.nature.com/news/private-foundation-plans-space-telescope-1.10918>, <www.thespacereview.com/article/2111/1>, <www.space.com/16501-private-space-telescope-asteroid-mining.html>, <www.universetoday.com/96727/schweickart-private-asteroid-mission-is-for-the-benefit-of-humanity/>, <www.space.com/18020-private-asteorid-hunting-telescope-sentinel.html>, <www.space.com/20636-private-asteroid-space-telescope-b612.html>, <dotearth.blogs.nytimes.com/2013/02/20/can-humans-do-better-than-dinosaurs-when-it-comes-to-incoming-space-objects/>, <spaceref.com/news/viewsr.html?pid=43620>, <b612foundation.org/rustys-post-an-asteroid-with-our-address/>, <b612foundation.org/rustys-post-changing-the-orbit-of-an-asteroid/>, <b612foundation.org/rustys-post-about-keyholes/>.

2012, Jun 29

R. Stone, 2012, Science,  336, 1630, "A new dawn for China's space scientists." See: <www.sciencemag.org/content/336/6089/1630.summary?sid=87f26ee0-0564-40b0-9367-95573a612cfd>.

2012, Jun 29

Asteroid 2012 MY2 (H = 26.3 mag, D ≈ 20 m) passed Earth at a nominal miss distance of 1.3 LD. Minimum miss distance 1.3 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2012+MY2&orb=1>.

2012, Jul

R.A.N. Araujo, O.C. Winter, A.F.B.A. Prado, A. Sukhanov, 2012, Monthly Notices Royal Astronomical Society, 423, 3058, "Stability regions around the components of the triple system 2001 SN263." See: <adsabs.harvard.edu/abs/2012MNRAS.423.3058A>.

2012, Jul

C. Burkhardt, T. Kleine, N. Dauphas, R. Wieler, 2012, Astrophysical Journal (Letters), 753, L6, "Nucleosynthetic tungsten isotope anomalies in acid leachates of the Murchison Chondrite: implications for hafnium-tungsten chronometry." See: <adsabs.harvard.edu/abs/2012ApJ...753L...6B>.

2012, Jul

N. Chaumard, B. Devouard, M. Delbò, et al., 2012, Icarus, 220, 65, "Radiative heating of carbonaceous near-Earth objects as a cause of thermal metamorphism for CK chondrites." See: <www.sciencedirect.com/science/article/pii/S0019103512001546>.

2012, Jul

J. Gayon-Markt, M. Delbò, A. Morbidelli, S. Marchi, 2012, Monthly Notices Royal Astronomical Society, 424, 508, "On the origin of the Almahata Sitta meteorite and 2008 TC3 asteroid." See: <adsabs.harvard.edu/abs/2012MNRAS.424..508G>.

2012, Jul

M. Hicks, S. Teague, C. Strojia, et al., 2012, The Astronomer's Telegram, #4251, "Physical characterization of the Potentially Hazardous Asteroid 2011 WV134." See: <adsabs.harvard.edu/abs/2012ATel.4251....1H>.

2012, Jul

M. Hicks, W. Smythe, T. Davtyan, et al., 2012, The Astronomer's Telegram, #4252, "Broadband photometry of 2012 LZ1: a large, dark Potentially Hazardous Asteroid." See: <adsabs.harvard.edu/abs/2012ATel.4252....1H>.

2012, Jul

C. Ma, O. Tschauner, J.R. Beckett, et al., 2012, American Mineralogist, 97, 1219, "Panguite, (Ti4+,Sc,Al,Mg,Zr,Ca)1.8O3, a new ultra-refractory titania mineral from the Allende meteorite: synchrotron micro-diffraction and EBSD." See: <www.its.caltech.edu/~chima/publications/2012_AM_buseckite.pdf>.
See also: <media.caltech.edu/press_releases/13524>.

2012, Jul

D. Marčeta, S. Šegan, 2012, Advances in Space Research, 50(2), 256, "The distributions of positions of Minimal Orbit Intersection Distances among Near Earth Asteroids." See: <adsabs.harvard.edu/abs/2012AdSpR..50..256M>.

2012, Jul

G.O. Ryabova, 2012, Monthly Notices Royal Astronomical Society, 423, 2254, "On the possible ejection of meteoroids from asteroid (3200) Phaethon in 2009." See: <adsabs.harvard.edu/abs/2012MNRAS.423.2254R>.

2012, Jul

J.A. Sanchez, V. Reddy, A. Nathues, et al., 2012, Icarus, 220, 36, "Phase reddening on near-Earth asteroids: implications for mineralogical analysis, space weathering and taxonomic classification." See: <www.sciencedirect.com/science/article/pii/S0019103512001376>.

2012, Jul

T.L. Segura, C.P. McKay, O.B. Toon, 2012, Icarus, 220, 144, "An impact-induced, stable, runaway climate on Mars." See: <www.sciencedirect.com/science/article/pii/S0019103512001510>.
See also: <www.space.com/15887-mars-asteroid-impact-greenhouse-effect.html>.

2012, Jul

L.L. Sokolov, A.A. Bashakov, T.P. Borisova, et al., 2012, Solar System Research, 46, 291, "Impact trajectories of the asteroid Apophis in the 21st century." See: <adsabs.harvard.edu/abs/2012SoSyR..46..291S>.

2012, Jul

I. Wlodarczyk, 2012, Solar System Research, 46, 301, "Impact orbits of the asteroid 2009 FJ with the Earth." See: <adsabs.harvard.edu/abs/2012SoSyR..46..301W>.

2012, Jul 6

K. Than, 2012, New Scientist, 6 July 2012, "Vital eye for killer asteroids could shut imminently." See: <www.newscientist.com/article/mg21528724.800-vital-eye-for-killer-asteroids-could-shut-imminently.html>.
See also: <www.mso.anu.edu.au/~rmn/>, <www.canberratimes.com.au/technology/sci-tech/funding-black-hole-means-our-asteroid-sentinel-may-abandon-crucial-work-20120710-21ubf.html>.

2012, Jul 7

Gravitational Tractor. See: <apod.nasa.gov/apod/ap120707.html>.
Ref:
- E.T. Lu, S.G. Love, 2005, Nature, 438, 177, "Gravitational tractor for towing asteroids", an article describing how a spacecraft could deflect an Earth-bound asteroid without having to dock to its surface. See: <adsabs.harvard.edu/abs/2005Natur.438..177L>

2012, Jul 10

T.E. Bunch, R.E. Hermes, A.M.T. Moore, et al., 2012, Proceedings National Academy of Sciences, 109, 11066, "Very high-temperature impact melt products as evidence for cosmic airbursts and impacts 12,900 years ago." See: <www.pnas.org/content/109/28/E1903/1.full>.
See also: <www.ia.ucsb.edu/pa/display.aspx?pkey=2748>, <en.wikipedia.org/wiki/Younger_Dryas_impact_hypothesis>.

2012, Jul 10-11

Seventh NASA Small Bodies Assessment Group meeting, 10-11 July 2012, Pasadena (CA, USA). See: <www.lpi.usra.edu/sbag/>, <www.lpi.usra.edu/sbag/meetings/jul2012/agenda.shtml>, <www.lpi.usra.edu/sbag/findings/index.shtml#sbag7>.  
Among the presentations:
- M.V. Sykes, 2012, Welkom & Report. See: <www.lpi.usra.edu/sbag/meetings/jul2012/presentations/TUES_0830_Sykes_Welcome.pdf>.
- M. Bernstein, 2012, Update on research programs relevant to Small Bodies. See: <www.lpi.usra.edu/sbag/meetings/jul2012/presentations/TUES_0915_Bernstein_RA.pptx.
- L. Johnson, 2012, Status and plans for the NEOO program. See: <www.lpi.usra.edu/sbag/meetings/jul2012/presentations/TUES_0945_Johnson_NEOO.pptx>
- L. Johnson, 2012, HQ response to SBAG-6 findings. See: <www.lpi.usra.edu/sbag/meetings/jul2012/presentations/TUES_0945_Johnson_Findings.pdf>.
- L.F. Lim, 2012, OSIRIS-REx. Asteroid sample return mission. See: <www.lpi.usra.edu/sbag/meetings/jul2012/presentations/TUES_1415_Lim_OSIRIS_REx.pdf>.
- M. Zolensky, 2012, Hayabusa update. See: <www.lpi.usra.edu/sbag/meetings/jul2012/presentations/TUES_1430_Zolensky_Hayabusa.pdf>.
P. Weissman, 2012, Rosetta update. See: <www.lpi.usra.edu/sbag/meetings/jul2012/presentations/TUES_1445_Weissman_Rosetta.pdf>.
- A. Mainzer, Near-Earth Object camera NEOCam. See: <www.lpi.usra.edu/sbag/meetings/jul2012/presentations/TUES_1515_Mainzer_NEOCam_compressed.pdf>.
- M. Buie, B612 Foundation, Ball Aerospace, 2012, The Sentinel mission. See: <www.lpi.usra.edu/sbag/meetings/jul2012/presentations/TUES_1545_Buie_B612>.
- C. Lewicki, 2012, Planetary Resources, Inc. See: <www.lpi.usra.edu/sbag/meetings/jul2012/presentations/TUES_1615_Lewicki%20PRI.pdf>.
- J. Brophy, L. Friedman, F. Culick, 2012, Asteroid retrieval mission study. See: <www.lpi.usra.edu/sbag/meetings/jul2012/presentations/TUES_1645_Brophy_Asteroid_Return.pdf>.

2012, Jul 21

First Light Gala celebration for commissioning of the Discovery Channel Telescope, a 4.3 m telescope at Lowell Observatory, Flagstaff (AZ, USA) with 2.3-degree FoV, dedicated to NEO research down to v = 23.8 mag, in collaboration with Discovery Communications.
See: <www.lowell.edu/dct.php/>.
Ref:
- E. Bowell, R.L. Millis, E.W. Dunham, et al., 2007, in: A. Milani, G.B. Valsecchi & D. Vokrouhlický (eds.), Proc. IAU Symposium No. 236 on Near Earth Objects, our Celestial Neighbors: Opportunity and Risk, Prague (Czech Republic), 14-18 August 2006 (Cambridge: CUP), p. 363, "Searching for NEOs using the Lowell Observatory's Discovery Channel Telescope (DCT)." See: <adsabs.harvard.edu/abs/2007IAUS..236..363B>.
See also: <www.lowell.edu/media/content/DCT_fact_sheet.pdf>, <http://www.skyandtelescope.com/astronomy-news/discovery-channel-telescopes-debut/>, <azdailysun.com/news/local/one-giant-leap/article_782390cf-daf6-5d9d-b8f2-ab042bc94991.html>, <www.spaceref.com/news/viewpr.html?pid=37886>, <www.bu.edu/cas/2012/07/24/boston-university-joins-discovery-channel-telescope-partners-for-celebration-of-%E2%80%9Cfirst-light%E2%80%9D/>, <en.wikipedia.org/wiki/Discovery_Channel_Telescope>.

2012, Jul 22

Asteroid 153958 (2002 AM31, H = 18.2 mag, D ≈ 800 m, PHA) passed Earth at a nominal miss distance of 13.7 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2002+AM31+&orb=1>.
See also: <www.universetoday.com/96384/watch-a-near-earth-asteroid-zoom-by/>, <www.dailymail.co.uk/sciencetech/article-2176561/Asteroid-nearly-mile-wide-sail-past-Earth-Sunday.html?ito=feeds-newsxml>, <www.space.com/16802-near-earth-asteroid-fly-by-captured-by-observatory-video.html>.

2012, Jul 25

Prince Albert Impact Crater. Researchers from the University of Saskatchewan (Canada) and the Geological Survey of Canada (GSC) have discovered, in 2010, a massive meteor impact from millions of years ago in Canada’s western Arctic. D ≈ 25 km. See: <news.usask.ca/2012/07/25/researcher-discovers-new-impact-crater-in-the-arctic/>, <phys.org/news/2012-08-impact-crater-arctic.html>, <www.thestar.com/news/canada/article/1231556--meteorite-crater-25-km-wide-discovered-in-arctic>, <en.wikipedia.org/wiki/Prince_Albert_Impact_Crater>.

2012, Aug

C. Alwmark, B. Schmitz, M.M.M. Meier, et al., 2012, Meteoritics & Planetary Science, 47, 1297, "A global rain of micrometeorites following breakup of the L-chondrite parent body – Evidence from solar wind-implanted Ne in fossil extraterrestrial chromite grains from China." See: <adsabs.harvard.edu/abs/2012M%26PS...47.1297A>.

2012, Aug

Md. Arif, N. Basavaiah, S. Mira, K. Deenadayalan, 2012, Meteoritics & Planetary Science, 47, 1305, "Variations in magnetic properties of target basalts with the direction of asteroid impact: example from Lonar crater, India." See: <adsabs.harvard.edu/abs/2012M%26PS...47.1305A>.

2012, Aug

D. Bancelin, F. Colas, W. Thuillot, et al., 2012, Astronomy & Astrophysics, 544, 15, "Asteroid (99942) Apophis: new predictions of Earth encounters for this Potentially Hazardous Asteroid." See: <adsabs.harvard.edu/abs/2012A%26A...544A..15B>.

2012, Aug

A. Lindskog, B. Schmitz, A. Cronholm, A. Dronov, 2012, Meteoritics & Planetary Science, 47, 1274, "A Russian record of a Middle Ordovician meteorite shower: extraterrestrial chromite at Lynna River, St. Petersburg region." See: <adsabs.harvard.edu/abs/2012M%26PS...47.1274L>.

2012, Aug

C.R. Nugent, J.L. Margot, S.R. Chesley, D. Vokrouhlický, 2012, Astronomical Journal, 144, 60, "Detection of semi-major axis drifts in 54 Near-Earth Asteroids: new measurements of the Yarkovsky effect." See: <adsabs.harvard.edu/abs/2012AJ....144...60N>.

2012, Aug

S. Pizzarello, 2012, Astrophysical Journal (Letters), 754, L27, "Hydrogen cyanide in the Murchison Meteorite." See: <adsabs.harvard.edu/abs/2012ApJ...754L..27P>.

2012, Aug

E. Schunová, M. Granvik, R. Jedicke, et al., 2012, Icarus, 220, 1050, "Searching for the first Near-Earth Object family." See: <adsabs.harvard.edu/abs/2012Icar..220.1050S>.
See also: <spaceref.com/news/viewsr.html?pid=41300>.

2012, Aug

D. Qiao, P. Cui, H. Cui, 2012, Advances in Space Research, 50(3), 327, "Proposal for a multiple-asteroid-flyby mission with sample return" See: <adsabs.harvard.edu/abs/2012AdSpR..50..327Q>.

2012, Aug 8

Midwest U.S. Fireball. See: <www.space.com/12661-meteorites-midwest-meteor-fireball-ohio.html>.

2012, Aug 10

C.M.O'D. Alexander, R. Bowden, M.L. Fogel, et al., 2012, Science, 337, 620; 337, 721, "The provenances of asteroids, and their contributions to the volatile inventories of the terrestrial planets."
See: <www.sciencemag.org/content/early/2012/07/11/science.1223474>.
See also: <www.space.com/16556-asteroid-impacts-earth-water.html>.

2012, Aug 12-17

75th Annual Meeting of the Meteoritical Society, Cairns (Australia), 12 - 17 August 2012, See: <www.meteoriticalsociety.org/simple_template.cfm?code=news_meetings&CFID=9258641&CFTOKEN=28349361>.
Among the papers:
- R.D. Acevedo, M. Rocca, J. Rabassa, et al., 2012, Meteoritics and Planetary Science Supplement, 75, 5043, "Near Earth Asteroids: a classification system according to their shapes." See: <http://adsabs.harvard.edu/abs/2012M&PSA..75.5043A>.
- P. Jenniskens, B. Girten, D. Sears, et al., September 2012, Meteoritics and Planetary Science Supplement, 75, 5376, "Recovery of the Sutter's Mill Meteorite." See: <adsabs.harvard.edu/abs/2012M%26PSA..75.5376J>.

2012, Aug 13-16

S. Wagner, T. Winkler, B. Wie, 13-16 August 2012, in: 2012 AIAA/AAS Astrodynamics Specialists Conference, 13-16 August 2012, Minneapolis (MN, USA), AIAA 2012-4874, "Analysis and selection of optimal targets for a planetary defense technology demonstration mission." See: <www.adrc.iastate.edu/files/2012/09/AIAA-2012-4874.pdf>.

2012, Aug 14

M. Fessenden, 2012, Scientific American, 307, 23, "Meteor hunt." See: <www.nature.com/scientificamerican/journal/v307/n3/full/scientificamerican0912-23.html>.

2012, Aug 16

Asteroid 4581 Asclepius (1989 FC, H = 20.4 mag, D ≈ 300 m, PHA) passed Earth at a nominal miss distance of 42.0 LD. Minimum miss distance 42.0 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=1989+FC&orb=1>, <en.wikipedia.org/wiki/4581_Asclepius>.
See also: 22 March 1989, 24 March 2051.

2012, Aug 21

Battle Mountain Fireball and Meteorite. Observed between Reno and Salt Lake City (USA).
See: <www.jpl.nasa.gov/news/news.php?release=2012-320>, <fieldmuseum.org/users/philipp-heck/blog/battle-mountain-meteorite-donated>.

2012, Aug 29-31

IAU XXVIII General Assembly, Special Session 7, on The impact hazard: current activities and future plans, Beijing (China), 29-31 August 2012.
See: <www.iau.org/static/publications/IB110.pdf>, p. 46, <adams.dm.unipi.it/iausps7>, <www.astronomy2012.com/>.
Papers:
- P. Michel, W. Lork, D. Morrison, et al., 2012, "NEOShield - a global approach to NEO impact threat mitigation." (invited)
- S. Chesley, J. Giorgini, M. Brozovic, et al., 2012, "The trajectory dynamics of Near-Earth Asteroid 101955 (1999 RQ36).
- G.F. Gronchi, C. Tardioli, 2012, "Averaging on planet crossing orbits and secular evolution of the MOID."
- S. Chesley, P. Chodas, D. Grebow, et al., 2012, "Impact hazard assessment for 2011 AG5."
- P. Michel, N. Murdoch, A. Cheng, et al., 2012, "AIDA: Asteroid Impact and Deflection Assessment."
- M. Granvik, A. Morbidelli, E. Beshore, et al., 2012, "Constructing a new near-Earth-object model." (invited)
- J. Ping, Q. Huang, X. Su, 2012, "CE-1 Lunar Orbiter discovered many middle scale ancient impact basins and craters on the Moon."
- G. Valsecchi, G. Gronchi, 2012, "The population of bright NEAs."
- P. Jenniskens, 2012, "Current efforts to detect long-period PHO in meteoroid orbit surveys."
- T.J. Jopek, 2012, "The Near Earth Asteroid associations."
- S. Abe, 2012, "An artificial Earth impactor as an indicator of the association between meteorites and NEOs."
- A. Devyatkin, N. Shakht, E. Sokov, et al., 2012, "Near-Earth Objects research in Pulkovo observatory."
- O. Shulga, Y. Kozyryev, Y. Sybiryakova, et al., 2012, NAO and SHAO participation in the near-Earth space observations."
- S. Chesley, D. Lauretta, the OSIRIS-REx Team, 2012, "The OSIRIS-REx mission – returning a sample from asteroid (101955) 1999 RQ36." (invited)
- P. Michel, L.-M. Lara, B. Marty, D. Koschny, et al., 2012, "MarcoPolo-R: Near Earth Asteroid sample return mission candidate as ESA-M3 class mission."
- P. Michel, J.-Y. Prado, M. A. Barucci, et al., 2012, "Probing the interior of asteroid Apophis: a unique opportunity in 2029."
- G. Valsecchi, E. Perozzi, A. Rossi, 2012, "A space mission to detect imminent Earth impactors."
- F. Bernardi, D. Farnocchia, G. B. Valsecchi, D. Koschny, et al., 2012, "The NEO Wide Field Survey for the ESA Space Situational Awareness program: an effective survey for discovering NEOs of the Tunguska class: 10 to 160 m.
- K. Muinonen, M. Granvik, D. Oszkiewicz, et al., 2012, "Virtual-observation MCMC for orbital inversion."
- G. Valsecchi, G. D'Abramo, A. Boattini, 2012, "Selection effects in the discovery of NEAs."
- J.-L. Margot, J. Giorgini, 2012, "The role of radar astronomy in assessing and mitigating the asteroid impact hazard."
- G.F. Gronchi, G. B. Valsecchi, 2012, "The possible values of the orbit distance between a NEA and the Earth."
- D. Koschny, N. Sanchez, G. Valsecchi, et al., 2012, "Precursor services for a European Space Situational Awareness near-Earth object segment."
- B. Shustov, 2012, "On coordinated approach to the problem of asteroid/comet impact hazard in Russia."
- A. Milani Comparetti, G.B. Valsecchi, 2012, Whom should we call? Data policy for immediate impactors announcements."
Posters:
- D.C. Boice, S.E. Martinez, 2012, "Warning times for potentially hazardous long-period comets."
- J. Desmars, Z.-H. Tang, 2012, Detection of secular drift in asteroid semimajor axis from astrometric observations."
- O. Golubov, Y. Krugly, 2012, "Tangential components of Yarkovsky and YORP effacts."
- T. Ito, A. Higuchi, 2012, "Dynamical evolution of the Oort cloud new comets."
- A. Kazantsev, 2012, "Estimation of NEAs quantity by on size distribution."
- A. Kazantsev, 2012, "Suitable periods and conditions for Apophis’s orbit correction."
- D. Lazzaro, T. Rodrigues, J. Marcio Carvano, F. Roig, T. Mothe-Diniz, IMPACTON team, 2012, "The IMPACTON project: implementation and first results."
- I. Shmeld, M. Abele, L. Kruze, I. Eglitis, 2012, "The universal program package for the calculating the trajectories of near-the Earth objects."
- S. Siregar, N. Daud, 2012, On the "probability density function and Tisserand invariant of the orbital elements of the NEAs."
- J. Ticha, M. Honkova, M. Tichy, M. Kocer, 2012, KLENOT next generation."

2012, Aug 30

The IAU XXVIII General Assembly, held in Beijing (China), adopted on 30 August 2012 the following Resolution B3 on the establishment of an International NEO Early Warning System, as proposed by the IAU Division III Working Group on Near Earth Objects:
The XXVIIIth General Assembly of the International Astronomical Union,
recognizing
- that there is now ample evidence that the probability of catastrophic impacts of Near-Earth Objects (NEOs) onto the Earth, potentially highly destructive to life, and for humankind in particular, is not negligible and that appropriate actions are being developed to avoid such catastrophes;
- that for the largest NEOs, thanks to the efforts of the astronomical community and of several space agencies, the cataloguing of the potentially hazardous ones, the monitoring of their impact possibilities, and the analysis of technologically feasible mitigations is reaching a satisfactory level;
- that even the impact of small- to moderate-sized objects may represent a great threat to our civilizations and to the international community;
- that our knowledge of the number, size, and orbital behaviour of smaller objects is still very limited, thus not allowing any reasonable anticipation on the likelihood of future impacts,
noting
that NEOs are a threat to all nations on Earth, and therefore that all nations should contribute to avert this threat,
recommends
that the IAU National Members work with the United Nations Committee on the Peaceful Uses of Outer Space (UNCOPUOS) and the International Council for Science (ICSU) to coordinate and collaborate on the establishment of an International NEO Early Warning System, relying on the scientific and technical advice of the relevant astronomical community, whose main purpose is the reliable identification of potential NEO collisions with the Earth, and the communication of the relevant parameters to suitable decision makers of the nation(s) involved.
See: <info.bao.ac.cn/download/astronomy/IAU2012/newspaper/IHissue09.pdf>, page 4.

2012, Sep

R.D. Acevedo, M. Rocca, J. Rabassa, et al., 2012, Meteoritics and Planetary Science Supplement, 75, 5043, "Near Earth Asteroids: a classification system according to their shapes." See: <adsabs.harvard.edu/abs/2012M%26PSA..75.5043A>.

2012, Sep

R. Armellin, A. Morselli, P. Di Lizia, M. Lavagna, 2012, Advances in Space Research, 50, 527, "Rigorous computation of orbital conjunctions." See: <spacegeneration.org/index.php/eventstopics/news/604-sgacs-near-earth-object-neo-working-group-announces-the-fifth-annual-move-an-asteroid-technical-p>, <adsabs.harvard.edu/abs/2012AdSpR..50..527A>.

2012, Sep

A.W. Harris, P. Pravec, B.D. Warner, 2012, Icarus, 221, 226, "Looking a gift horse in the mouth: evaluation of wide-field asteroid photometric surveys." See: <adsabs.harvard.edu/abs/2012Icar..221..226H>.

2012, Sep

H. Hussmann, J. Oberst, K. Wickhusen, et al., 2012, Planetary and Space Science, 70, 102, "Stability and evolution of orbits around the binary asteroid 175706 (1996 FG3): implications for the MarcoPolo-R mission." See: <adsabs.harvard.edu/abs/2012P%26SS...70..102H>.

2012, Sep

P. Jenniskens, B. Girten, D. Sears, et al., 2012, Meteoritics and Planetary Science Supplement, 75, 5376, "Recovery of the Sutter's Mill Meteorite." See: <adsabs.harvard.edu/abs/2012M%26PSA..75.5376J>.

2012, Sep

C.R. Nugent, A. Mainzer, J. Masiero, et al., 2012, Astronomical Journal, 144, 75, "The Yarkovsky drift's influence on NEAs: trends and predictions with NEOWISE measurements." See: <adsabs.harvard.edu/abs/2012AJ....144...75N>.

2012, Sep

P. Pravec, A.W. Harris, P. Kušnirák, et al., 2012, Icarus, 221, 365, "Absolute magnitudes of asteroids and a revision of asteroid albedo estimates from WISE thermal observations." See: <adsabs.harvard.edu/abs/2012Icar..221..365P>.

2012, Sep

Space Generation Advisory Council Move an asteroid 2012 competition award winner announcement: Sung Wook Paek, a graduate student in the MIT Department of Aeronautics and Astronautics.See: <spacegeneration.org/index.php/eventstopics/news/604-sgacs-near-earth-object-neo-working-group-announces-the-fifth-annual-move-an-asteroid-technical-p>, <http://spacegeneration.org/component/content/article/37-uncategorised/news/669-sgac-announces-the-winner-of-the-2012-move-an-asteroid-competition.html>, <web.mit.edu/newsoffice/2012/deflecting-an-asteroid-with-paintballs-1026.html>.

2012, Sep 4

NASA announces asteroid naming contest for students. See: <planetary.org/get-involved/contests/osirisrex/>, <www.nasa.gov/topics/solarsystem/features/name-asteroid.html>.
See also: <www.space.com/17497-nasa-asteroid-naming-contest-1999-rq36.html>.

2012, Sep 5

NASA spacecraft Dawn left asteroid 4 Vesta and is cruising to dwarf planet 1 Ceres. See: <dawn.jpl.nasa.gov/>.

2012, Sep 10

Impact on Jupiter, observed independendly by two amateur astronomers. See: <www.space.com/17534-jupiter-impact-explosion-amateur-astronomers.html>, <www.space.com/17535-latest-explosion-on-jupiter-captured-by-amateur-astronomer-video.html>, <www.space.com/17546-jupiter-impact-slooh-webcast-tonight.html>, <www.skyandtelescope.com/community/skyblog/observingblog/Another-Flash-on-Jupiter-169263686.html>.

2012, Sep 14, 05:13

Asteroid 2012 QG42 (H = 20.7 mag, D ≈ 250 m, PHA) passed Earth at a nominal miss distance of 7.4 LD. Minimum miss distance 7.4 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2012+QG42+&orb=1>.
See also: <http://news.nationalgeographic.com/news/potentially-hazardous-asteroid-double-flyby-astronomy/>.

2012, Sep 14, 22:56

Asteroid 2012 QC8 (H = 18.0 mag, D ≈ 900 m) passed Earth at a nominal miss distance of 22.7 LD. Minimum miss distance 22.7 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2012+QC8+&orb=1>.
See also: <news.nationalgeographic.com/news/potentially-hazardous-asteroid-double-flyby-astronomy/>.

2012, Sep 15

A.W. Harris, M.A. Barucci, J.L. Cano, et al., 2012, Acta Astronautica, online, "The European funded NEOShield project: A global approach to Near-Earth Object impact threat mitigation." See: <elib.dlr.de/70019/1/NEOShield_paper_pdc11.pdf>, <www.sciencedirect.com/science/article/pii/S0094576512003360>.

2012, Sep 20-23

International Meteor Conference 2012, La Palma (Canary Islands, Spain) 20-23 September 2012. See: <www.imo.net/imc2012/>, <www.imo.net/imc2012/proceedings>.

2012, Sep 21

U.K. Fireball. See: <www.space.com/17740-dazzling-meteor-fireball-video-united-kingdom.html>.

2012, Sep 23-28

European Planetary Science Congress 2012 (EPSC), IFEMA-Feria de Madrid, Madrid (Spain), 23-28 September 2012. See: <www.epsc2012.eu/>, <meetingorganizer.copernicus.org/EPSC2012/sessionprogramme/SB>, <meetingorganizer.copernicus.org/EPSC2012/oral_program/11492>.
Among the papers:
- J. Agarwal, D. Jewitt, H. Weaver, et al., 2012, "P/2010 A2 – impact or rotational break-up?" See: <meetingorganizer.copernicus.org/EPSC2012/EPSC2012-729.pdf>.
- J. Borovička, P. Spurný, 2012, "A semi-empirical model of atmospheric fragmentation of meteoroids." See: <meetingorganizer.copernicus.org/EPSC2012/EPSC2012-31.pdf>.
- A. Campo Bagatin, A. Rossi, R.A. Alemañ, et al., 2012, "1996 FG3, MarcoPolo-R mission target: living on the edge." See: <meetingorganizer.copernicus.org/EPSC2012/EPSC2012-542-1.pdf>.
- A.F. Cheng, P. Michel, C. Reed, et al., 2012, "DART: Double Asteroid Redirection Test." See: <meetingorganizer.copernicus.org/EPSC2012/EPSC2012-935-1.pdf>.
- M. Delbò, K. Walsh, 2012, "Where do the primitive NEOs come from? A new asteroid family may be a primary source." See: <meetingorganizer.copernicus.org/EPSC2012/EPSC2012-622.pdf>.
- J. de Leon, V. Lorenzi, V. Alí-Lagoa, et al., 2012, "Additional spectra of binary asteroid 1996 FG3, primary target of the ESA MarcoPolo-R mission." See: <meetingorganizer.copernicus.org/EPSC2012/EPSC2012-230-1.pdf>.
- L. Egorova, V. Lokhin, 2012, "On the mechanism of crushing meteoroid with end flash effect." See: <meetingorganizer.copernicus.org/EPSC2012/EPSC2012-769.pdf>.
- J. Flohrer, J. Oberst, D. Heinlein, T. Grau, 2012, "The European Fireball Network 2011 - status of cameras and observation results in Germany." See: <meetingorganizer.copernicus.org/EPSC2012/EPSC2012-441.pdf>.
- A. Galvez, I. Carnelli, M. Fontaine, C. Corral Van Damme, 2012, "Asteroid Impact Mission (AIM) & deflection assessment: an opportunity to understand impact dynamics and modelling." See: <meetingorganizer.copernicus.org/EPSC2012/EPSC2012-807.pdf>.
- M.I. Gritsevich, 2012, "Coupling approaches used in atmospheric entry models." See: <meetingorganizer.copernicus.org/EPSC2012/EPSC2012-910.pdf>.
- A.W. Harris, M.A. Barucci, J.L. Cano, et al., 2012, "NEOShield: Working towards an international near-Earth object mitigation demonstration mission." See: <meetingorganizer.copernicus.org/EPSC2012/EPSC2012-126.pdf>.
- S.A. Jacobson, P. Scheirich, P. Pravec, D.J. Scheeres, 2012, "Spacecraft discoveries enabled by photometric observations of the dynamics of 1996 FG3." See: <meetingorganizer.copernicus.org/EPSC2012/EPSC2012-365-2.pdf>.
- T. Kohout, J.-P. Suuronen, A. Kallonen, et al., 2012, "Changes to meteoroid shape, density, porosity and internal structure during high velocity atmospheric entry." See: <meetingorganizer.copernicus.org/EPSC2012/EPSC2012-519.pdf>.
- L. ORourke, T. Müller, C. Kiss, et al., 2012, "Herschel observations of the Hayabusa 2 asteroid 162173 (1999 JU3)." See: <meetingorganizer.copernicus.org/EPSC2012/EPSC2012-753-2.pdf>.
- D. Perna, E. Dotto, M.A. Barucci, et al., 2012, "UV-to-NIR spectroscopy of 1996 FG3." See: <hmeetingorganizer.copernicus.org/EPSC2012/EPSC2012-334.pdf>.
- A.S. Rivkin, E.S. Howell, F.E. DeMeo, et al., 2012, "The MarcoPolo-R target asteroid (175706) 1996 FG3: hydrated minerals and a variable spectral slope." See: <meetingorganizer.copernicus.org/EPSC2012/EPSC2012-350.pdf>.
- F. Spoto, D. Farnocchia, A. Milani, et al., 2012, "Near Earth Asteroids with measurable Yarkovsky effect." See: <meetingorganizer.copernicus.org/EPSC2012/EPSC2012-345.pdf>.
- J. Vaubaillon, F. Colas, S. Bouley, et al., 2012, "The meteor dedicated CAmera for BEtter Resolution NETwork (CABERNET)." See: <meetingorganizer.copernicus.org/EPSC2012/EPSC2012-458.pdf>.
- I. Vereshchagina, E. Sokov, D. Gorshanov, et al., 2012, "Investigation of binary asteroids and NEOs." See: <meetingorganizer.copernicus.org/EPSC2012/EPSC2012-125.pdf>.

2012, Sep-Oct

P. Pravec, A.W. Harris, P. Kušniráka, et al., 2012, Icarus, 221, 365, "Absolute magnitudes of asteroids and a revision of asteroid albedo estimates from WISE thermal observations." See: <adsabs.harvard.edu/abs/2012Icar..221..365P>.

2012, Oct

J. Goff, C. Chagué-Goff, M. Archer, et al., 2012, Journal of Quaternary Science, 27, 660, "The Eltanin asteroid impact: possible South Pacific palaeomegatsunami footprint and potential implications for the Pliocene–Pleistocene transition." See: <onlinelibrary.wiley.com/doi/10.1002/jqs.2571/abstract>.
See also: <phys.org/news/2012-09-pacific-ocean-meteor-trigger-ice.html>.

2012, Oct

M. Vasile, C.A. Maddock, 2012, Advances in Space Research, 50, 891, "Design of a formation of solar pumped lasers for asteroid deflection." See: <adsabs.harvard.edu/abs/2012AdSpR..50..891V>.
See also: <www.bbc.com/future/story/20120622-a-laser-fix-for-asteroid-threats>.

2012, Oct

F. Zuiani, M. Vasile, A. Gibbings, 2012, Celestial Mechanics and Dynamical Astronomy, 114, 107, "Evidence-based robust design of deflection actions for near Earth objects." See: <link.springer.com/article/10.1007/s10569-012-9423-1>.

2012, Oct 1-5

R.A. Williamson, L. David, R. Schweickart, 2012, in: 25th Symposium on Space Policy, Regulations and Economics, 1-5 October 2012, Napels (Italy), "Crafting an effective communications plan for an international response to a threatening Near Earth Object." See: <swfound.org/media/93083/e.3.1.9-neos_media-williamson_david_schweickart.pdf>.

2012, Oct 7

Asteroid 2012 TV (H = 25.2 mag, D ≈ 35 m) passed Earth at a nominal miss distance of 0.7 LD. Minimum miss distance 0.7 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2012+TV&orb=1>.

2012, Oct 9

Asteroid 2012 TM79 (H = 26.6 mag, D ≈ 20 m) passed Earth at a nominal miss distance of 0.2 LD. Minimum miss distance 0.2 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2012+TM79+&orb=1>.

2012, Oct 12

Asteroid 2012 TC4 (H = 26.7 mag, D ≈ 15 m) passed Earth at a nominal miss distance of 0.2 LD. Minimum miss distance 0.2 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2012+TC4+&orb=1>.
See also: 12 October 1996, 12 October 2017, <www.space.com/18007-asteroid-coming-closer-than-the-moon-video.html>.

2012, Oct 10-12

International Workshop on Instrumentation for Planetary Missions, 10-12 October 2012, NASA Goddard Space Flight Center, Greenbelt (MD, USA). See: <ssed.gsfc.nasa.gov/IPM/index.html>.

2012, Oct 14-19

American Astronomical Society, 44th Division for Planetary Science  meeting, 14-19 October 2012, Reno (Nevada, USA).
Among the papers:
- P. Abell, B.W. Barbee, R.G. Mink, et al., 2012, #111.01, "The Near-Earth Object Human Space Flight Accessible Targets Study (NHATS) list of Near-Earth Asteroids: identifying potential targets for future exploration." See: <adsabs.harvard.edu/abs/2012DPS....4411101A>.
- R. Araujo, O.C. Winter, 2012, #210.04, "NEAs' satellites under close encounters with Earth." See: <adsabs.harvard.edu/abs/2012DPS....4421004A>.
- D. Bancelin, D. Hestrofer, W. Thuillot, 2012, #210.01, "Asteroid Apophis from past, present and future observations." See: <adsabs.harvard.edu/abs/2012DPS....4421001B>.
- L.A.M. Benner, M. Brozovic, J.D. Giorgini, et al., 2012, #102.06, "Arecibo and Goldstone Radar Observations of binary Near-Earth Asteroid and Marco Polo-R mission target (175706) 1996 FG3." See: <adsabs.harvard.edu/abs/2012DPS....4410206B>.
- R.P. Binzel, F.E. DeMeo, M. Lockhart, et al., 2012, #202.03, "Cracking the Space Weathering Code: ordinary chondrite asteroids in the Near-Earth population." See: <adsabs.harvard.edu/abs/2012DPS....4420203B>.
- B.T. Bolin, R. Jedicke, M. Granvik, 2012, #305.06, "The detectability of Earth’s temporarily captured orbiters." See: <adsabs.harvard.edu/abs/2012DPS....4430506B>.
- M.W. Busch, S.J. Ostro, L.A. Benner, et al., 2012, #302.05, "Radar imaging of 11066 Sigurd, 2000 YF29, and 2004 XL14 and the obliquity distribution of contact binary Near-Earth Asteroids." See: <adsabs.harvard.edu/abs/2012DPS....4430205B>.
- A.F. Cheng, A. Rivkin, A. Galvez, et al., 2012, #215.03, "AIDA: Asteroid Impact & Deflection Assessment." See: <adsabs.harvard.edu/abs/2012DPS....4421503C>.
- M. Delbò, D. Nesvorny, J. Licandro, V. Ali-Lagoa, 2012, #202.01, "New analysis of the Baptistina asteroid family: implications for its link with the K/T impactor." See: <adsabs.harvard.edu/abs/2012DPS....4420201D>.
- J.P. Emery, M.S. Kelly, Y.R. Fernandez, et al., 2012, #102.05, "Thermal and physical characterization of the OSIRIS-REx target asteroid (101955) 1999 RQ36." See: <adsabs.harvard.edu/abs/2012DPS....4410205E>.
- D. Farnocchia, A. Milani, S.R. Chesley, et al., #305.02, "Near Earth Asteroids with measurable Yarkovsky effect." See: <adsabs.harvard.edu/abs/2012DPS....4430502F>.
- M. Granvik, A. Morbidelli, W. Bottke, et al., 2012, #305.03, "Source regions for Near-Earth Objects." See: <adsabs.harvard.edu/abs/2012DPS....4430503G>.
- A.W. Harris, L. Drube, NEOShield Consortium, 2012, #210.05, "The NEOShield project: understanding the mitigation-relevant physical properties of potentially hazardous asteroids." See: <adsabs.harvard.edu/abs/2012DPS....4421005H>.
- A.W. Harris, 2012, #305.08, "The value of enhanced NEO surveys." See: <adsabs.harvard.edu/abs/2012DPS....4430508H>.
- M.D. Hicks, K.J. Lawrence, J. Somers, et al., 2012, #110.13, "A spectroscopic and photometric survey of selected Near-Earth Asteroids: results from 2008-2012." See: <adsabs.harvard.edu/abs/2012DPS....4411013H>.
- J.E. Horvath, D. Galante, 2012, International Journal of Astrobiology, 11, 279, "Effects of high-energy astrophysical events on habitable planets." See: <adsabs.harvard.edu/abs/2012IJAsB..11..279H>.
- E.S. Howell, R.J. Verrack, M.C. Nolan, et al., 2012, #110.07, "Combining thermal and radar observations of Near-Earth Asteroids." See: <adsabs.harvard.edu/abs/2012DPS....4411007H>.
- R. Jedicke, J. Tonry, P. Veres, et al., 2012, #210.12, "ATLAS: Asteroid Terrestrial-impact Last Alert System." See: <adsabs.harvard.edu/abs/2012DPS....4421012J>.
- K. Kitazato, S. Abe, M. Ishiguro, et al., October 2012, #210.20, "Measuring the YORP effect of asteroid 4660 Nereus." See: <adsabs.harvard.edu/abs/2012DPS....4421020K>.
- C. Lantz, E. Dotto, M.A. Barucci, et al., 2012, #215.02, "The European sample return mission MarcoPolo-R: understanding the nature of extraterrestrial primitive materials and tracing the origins." See: <adsabs.harvard.edu/abs/2012DPS....4421502L>.
- L.F. Lim, J.P. Emery, N.A. Moskovitz, et al., 2012, #305.01, "The Near-Earth encounter of asteroid 308635 (2005 YU55): thermal IR observations." See: <adsabs.harvard.edu/abs/2012DPS....4430501L>.
- A.K. Mainzer, J. Bauer, T. Grav, et al., 2012, #102.07, "Preliminary results from the NEOWISE post-cryogenic mission." See: <adsabs.harvard.edu/abs/2012DPS....4410207M>.
- R.S. McMillan, T.H. Bressi, J.V. Scotti, et al., 2012, #210.14, "Spacewatch observations of Near-Earth Objects." See: <adsabs.harvard.edu/abs/2012DPS....4421014M>.
- M. Mommert, A.W. Harris, D.E. Trilling, et al., 2012, #302.03, "ExploreNEOs: search for Near-Earth Objects of cometary origin." See: <adsabs.harvard.edu/abs/2012DPS....4430203M>.
- N. Moskovitz, S. Abe, D. Osip, et al., 2012, #102.04, "Characterization of Hayabusa 2 target asteroid (162173) 1999 JU3." See: <adsabs.harvard.edu/abs/2012DPS....4410204M>.
- M.C. Nolan, C. Magri, L.A.M. Benner, et al., 2012, #110.02, "The shape of OSIRIS-REx mission target 1999 RQ36 from RADAR and lightcurve data." See: <adsabs.harvard.edu/abs/2012DPS....4411002N>.
- C. Nugent, A. Mainzer, J. Masiero, et al., 2012, #210.18, "The Yarkovsky drift’s influence on NEAs: trends and predictions with NEOWISE measurements." See: <adsabs.harvard.edu/abs/2012DPS....4421018N>.
- A.S. Rivkin, E.S. Howell, J.P. Emery, J.M. Sunshine, 2012, #202.02, "Does the Solar Wind create OH on NEO surfaces?: observations of 433 Eros and 1036 Ganymed." See: <adsabs.harvard.edu/abs/2012DPS....4420202R>.
- S. Tardivel, P. Michel, D. Scheeres, 2012, #215.24, "Concept of operations for deploying a lander on the secondary body of binary asteroid 1996 FG3." See: <adsabs.harvard.edu/abs/2012DPS....4421524T>.
- P.A. Taylor, E.S. Howell, M.C. Nolan, A.A. Thane, 2012, #302.07, "The shape and spin distributions of Near-Earth Asteroids observed with the Arecibo radar system." See: <adsabs.harvard.edu/abs/2012DPS....4430207T>.
- F. Vilas, 2012, #102.03, "New spectral reflectance observations of Hayabusa 2 Near-Earth Asteroid target (162173) 1999 JU3." See: <adsabs.harvard.edu/abs/2012DPS....4410203V>.

2012, Oct 17

California Fireball.The meteor put on a dazzling display over Northern California (USA). The subsequent fireball and sonic boom triggered a flood of reports by witnesses to local news stations and authorities, with accounts coming in from across San Francisco and the Bay Area.
See: <www.space.com/18116-spectacular-meteor-california-fireball.html>, <www.space.com/18117-fireball-lights-up-san-jose-video.html>.

2012, Nov

R. Bewick, J.P. Sancjez, C.R. McInnes, 2012, Advances in Space Research, 50, 1405, "Gravitationally bound geoengineering dust shade at the inner Lagrange point." See: <adsabs.harvard.edu/abs/2012AdSpR..50.1405B>.
See also: <www.space.com/17830-asteroid-dust-geoenineering-global-warming.html>.

2012, Nov

C. Bombardelli, G. Baù, 2012, Celestial Mechanics and Dynamical Astronomy, 114, 279, "Accurate analytical approximation of asteroid deflection with constant tangential thrust." See: <link.springer.com/article/10.1007/s10569-012-9440-0>.

2012, Nov

C. de la Fuente Marcos, R. de la Fuente Marcos, 2012, Monthly Notices of the Royal Astronomical Society, 427, 728, "On the dynamical evolution of 2002 VE68." See: <adsabs.harvard.edu/abs/2012MNRAS.427..728D>.

2012, Nov

J. Ďurech, D. Vokrouhlický, A.R. Baransky, 2012, Astronomy & Astrophysics, 547, 109, "Analysis of the rotation period of asteroids (1865) Cerberus, (2100) Ra-Shalom, and (3103) Eger – search for the YORP effect." See: <adsabs.harvard.edu/abs/2012A%26A...547A..10D>.

2012, Nov

K.M. Gietzen, C.H.S. Lacy, D.R. Ostrowski, et al., 2012, Meteoritics & Planetary Science, 47, 1789, "IRTF observations of S complex and other asteroids: implications for surface compositions, the presence of clinopyroxenes, and their relationship to meteorites." See: <adsabs.harvard.edu/abs/2012M%26PS...47.1789G>.

2012, Nov

P. Vereš, R. Jedicke, L. Denneau, et al., 2012, Publications of the Astronomical Society of the Pacific, 124, 1197, "Improved asteroid astrometry and photometry with trail fitting." See: <adsabs.harvard.edu/abs/2012PASP..124.1197V>.

2012, Nov

D. Véronique, B. Doris, C. Philippe, et al., 2012, Planetary and Space Science, 72, 3, "From meteorites to evolution and habitability of planets." See: <adsabs.harvard.edu/abs/2012P%26SS...72....3V>.

2012, Nov

D.K. Yeomans, 2013, Near-Earth Objects. Finding them before they find us (Princeton: Princeton University Press; ISBN 978-0-69114929-5). See: <press.princeton.edu/titles/9817.html>.
See also: <www.thespacereview.com/article/2192/1>, <www.washingtonpost.com/opinions/book-review-near-earth-objects-finding-them-before-they-find-us-by-donald-k-yeomans/2012/12/21/01db8270-4070-11e2-bca3-aadc9b7e29c5_story.html>, <www.space.com/19263-asteroid-threat-earth-don-yeomans.html>, <blogs.scientificamerican.com/observations/2013/01/22/asteroid-hunter-gives-an-update-on-the-threat-of-near-earth-objects/>, <cosmiclog.nbcnews.com/_news/2013/01/25/16702712-asteroids-vs-comets-nasa-expert-assesses-the-cosmic-threats-to-earth?lite>.

2012, Nov 5

Asteroid 214869 (2007 PA8, H = 16.3 mag, D ≈ 1600 m, PHA), passed Earth at a nominal miss distance of 16.85 LD. Minimum miss distance 16.85 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2007+PA8&orb=1>.
See also: <http://www.jpl.nasa.gov/news/news.php?release=2012-350>, <http://www.jpl.nasa.gov/news/news.php?release=2012-369>, <adsabs.harvard.edu/abs/2012ATel.4625....1H>.

2012, Nov 6

Pristine Moon crater Linné could help unlock impacts' secrets on Earth. See: <www.space.com/18354-virgin-moon-crater-reveals-vital-secrets-of-impacts-video.html>, <www.space.com/18361-linne-crater-moon-nasa-lro.html>, <en.wikipedia.org/wiki/Linn%C3%A9_(crater)>.
Ref.:
- J.B. Garvin, M.S. Robinson, J. Frawley, et al., 2011, in: 42nd Lunar and Planetary Science Conference, "Linné: simple lunar mare crater geometry from LRO observations." See: <www.lpi.usra.edu/meetings/lpsc2011/pdf/2063.pdf>.

2012, Nov 9

H. Chennaoui Aoudjehane, G. Avice, J.-A. Barrat, et al., 2012, Science, 338, 785, "Tissint Martian meteorite: a fresh look at the interior, surface, and atmosphere of Mars." See: <www.sciencemag.org/content/early/2012/10/12/science.1224514>.

2012, Nov 12

Asteroid 2012 VH77 (H = 27.3 mag, D ≈ 10 m), passed Earth at a nominal miss distance of 0.5 LD. Minimum miss distance 0.5 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2012+VH77&orb=1>.

2012, Nov 14

Asteroid 2012 VJ38 (H = 28.5 mag, D ≈ 7 m), passed Earth at a nominal miss distance of 0.6 LD. Minimum miss distance 0.6 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2012+VJ38+&orb=1>.

2012, Nov 16

UN - Committee on the Peaceful Uses of Outer Space (UN-COPUOS), Information on research in the field of NEOs carried out by Member States, international organizations and other entities. A/AC.105/C.1/106. See: <www.oosa.unvienna.org/pdf/reports/ac105/C1/AC105_C1_106E.pdf>.

2012, Nov 16

J.A. Tarduno, R.D. Cottrell, F. Nimmo, et al., Science, 338, 939, "Evidence for a dynamo in the main group Pallasite parent body." See: <www.sciencemag.org/content/338/6109/939.abstract>.

2012, Nov 16

B.P. Weiss, 2012, Science, 338, 897, "A vitrage of asteroid magnetism." See: <www.sciencemag.org/content/338/6109/897.summary>.

2012, Nov 20

A. Mainzer, T. Grav, J. Masiero, et al., 2012, Astrophysical Journal (Letters), 760, L12, "Physical parameters of asteroids estimated from the WISE 3 Band data and NEOWISE post-cryogenic survey." See: <adsabs.harvard.edu/abs/2012ApJ...760L..12M>.

2012, Nov 28

A. Rivkin, on behalf of the SBAG SKG‐SAT, 2012, NEO/Phobos/Deimos Strategic Knowledge Gaps, Special Action Team Final Report. See: <www.lpi.usra.edu/sbag/documents/FinalReport_112812.pdf>.

2012, Nov-Dec

D. de Niem, E. Kührt, A. Morbidelli, U. Motschmann, 2012, Icarus, 221, 495, "Atmospheric erosion and replenishment induced by impacts upon the Earth and Mars during a heavy bombardment." See: <adsabs.harvard.edu/abs/2012Icar..221..495D>.

2012, Nov-Dec

D. Polishook, R.P. Binzel, M. Lockhart, 2012, Icarus, 221, 1187, "Spectral and spin measurement of two small and fast-rotating near-Earth asteroids." See: <adsabs.harvard.edu/abs/2012Icar..221.1187P>.

2012, Nov-Dec

V. Reddy, L. LeCorre, M. Hicks, et al., 2012, Icarus, 221, 678, "Composition of Near-Earth Asteroid 2008 EV5: potential target for robotic and human exploration." See: <www.sciencedirect.com/science/article/pii/S0019103512003545>.

2012, Nov-Dec

V. Reddy, J.A. Sanchez, M.J. Gaffey, et al., 2012, Icarus, 221, 1177, "Composition of Near-Earth Asteroid (4179) Toutatis." See: <adsabs.harvard.edu/abs/2012Icar..221.1177R>.

2012, Dec

A.A. Christou, T. Kwiatkowski, M. Butkiewicz, et al., 2012, Astronomy & Astrophysics, 548, 63, "Physical and dynamical characterisation of low delta-V NEA (190491) 2000 FJ10." See: <adsabs.harvard.edu/abs/2012A%26A...548A..63C>.

2012, Dec

Z. Hasnain, C.A. Lamb, S.D. Ross, 2012, Acta Astronautica, 81, 523, "Capturing near-Earth asteroids around Earth." See: <www.sciencedirect.com/science/article/pii/S0094576512002925>.

2012, Dec

M. Hicks, D. Dombroski, 2012, The Astronomer's Telegram, #4623, "Broadband photometry of 214869 (2007 PA8): a slowly rotating potentially hazardous asteroid." See: <adsabs.harvard.edu/abs/2012ATel.4625....1H>.

2012, Dec

M. Hicks, M. Brewer, J. Somers, 2012, The Astronomer's Telegram, #4625, "Physical characterization of (333358) 2001 WN1: a large, possibly water-rich, low delta-V Near-Earth Asteroid." See: <adsabs.harvard.edu/abs/2012ATel.4625....1H>.

2012, Dec

K.J. Mighell, M. Rehnberg, R. Crawford, et al., 2012, Publications of the Astronomical Society of the Pacific, 124, 1360, "PhAst: an IDL astronomical image viewer optimized for astrometry of Near Earth Objects." See: <adsabs.harvard.edu/abs/2012PASP..124.1360M>.

2012, Dec

T.G. Müller, L. O'Rourke, A.M. Barucci, et al., 2012, Astronomy & Astrophysics, 548, 36, "Physical properties of OSIRIS-REx target asteroid (101955) 1999 RQ36. Derived from Herschel, VLT/ VISIR, and Spitzer observations." <adsabs.harvard.edu/abs/2012A%26A...548A..36M>.

2012, Dec

J. Oberst, A. Christou, R. Suggs, et al., 2012, Planetary and Space Science, 74, 179, "The present-day flux of large meteoroids on the lunar surface — a synthesis of models and observational techniques." See: <adsabs.harvard.edu/abs/2012P%26SS...74..179O>.

2012, Dec

D. Oszkiewicz, K. Muinonen, J. Virtanen, et al., 2012, Planetary and Space Science, 73, 30, "Modeling collision probability for Earth-impactor 2008 TC3." See: <adsabs.harvard.edu/abs/2012P%26SS...73...30O>.

2012, Dec

N.H. Sleep, 2012, Astrobiology, 12, 1163, "Life: asteroid target, witness from the early Earth, and ubiquitous effect on global geology." See: <adsabs.harvard.edu/abs/2012AsBio..12.1163S>.

2012, Dec

K.J. Wals, A. Morbidelli, S.N. Raymond, et al., 2012, Meteoritics & Planetary Science, 74, 1941, "Populating the asteroid belt from two parent source regions due to the migration of giant planets—"The Grand Tack"." See: <onlinelibrary.wiley.com/doi/10.1111/j.1945-5100.2012.01418.x/abstract>.

2012, Dec

I.Wlodarczyk, 2012, Monthly Notices of the Royal Astronomical Society, 427, 1175, "The potentially dangerous asteroid 2012 DA14." See: <adsabs.harvard.edu/abs/2012MNRAS.427.1175W>.

2012, Dec 1

T. Usui, C.M.O'D. Alexander, J. Wang, et al., 2012, Earth and Planetary Science Letters, 357, 119, "Origin of water and mantle–crust interactions on Mars inferred from hydrogen isotopes and volatile element abundances of olivine-hosted melt inclusions of primitive shergottites." See: <www.sciencedirect.com/science/article/pii/S0012821X12005043>.
See also: <www.space.com/18571-mars-water-formation-earth.html>.

2012, Dec 3

La Monica Everett-Haynes, 2012, UANews, 3 December 2102, "Improving software for asteroid detection." See: <uanews.org/story/improving-software-asteroid-detection>.

2012, Dec 4

PIONEERING: Sustaining U.S. leadership in space. Report by the U.S. Space Foundation. See: <www.spacefoundation.org/programs/research-and-analysis/pioneering/media/space-foundation-recommends-nasa-adopt-pioneering>, <www.spacefoundation.org/sites/default/files/downloads/PIONEERING_Exec%20Sum.pdf>, <www.spacefoundation.org/sites/default/files/downloads/PIONEERING.pdf>.
See also: <www.space.com/18754-nasa-direction-space-leadership-report.html>, <www.space.com/19070-nasa-asteroid-mission-direction.html>.

2012, Dec 6

M. Hicks, D. Dombroski, The Astronomer's Telegram, #4623, "Physical characterization of (333358) 2001 WN1: a large, possibly water-rich, low delta-V Near-Earth Asteroid." See: <adsabs.harvard.edu/abs/2012ATel.4623....1H>.

2012, Dec 7

Texas Fireball. See: <www.space.com/18840-texas-meteor-fireball-video.html>, <www.bbc.co.uk/news/world-us-canada-20654335>.

2012, Dec 10

N.H. Sleep, 2012, Astrobiology, 12, 1163, "Life: asteroid target, witness from the early Earth, and ubiquitous effect on global geology." See: <adsabs.harvard.edu/abs/2012AsBio..12.1163S>

2012, Dec 11

Asteroid 2012 XE54 (H = 25.4 mag, D ≈ 30 m), passed Earth at a nominal miss distance of 0.6 LD. Minimum miss distance 0.6 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2012+XE54+&orb=1>.
See also: <www.universetoday.com/98923/two-asteroids-will-buzz-past-earth-on-december-11/>, <www.space.com/18854-newfound-asteroid-close-flyby-earth.html>.

2012, Dec 12

E. Hand, 2012, Nature, 492, 161, "Duelling visions stall NASA. A US plan to send humans to explore an asteroid is losing momentum." See: <www.nature.com/news/duelling-visions-stall-nasa-1.12003>, <adsabs.harvard.edu/abs/2012Natur.492..161H>.

2012, Dec 12

Asteroid 4179 Toutatis (1989 AC, H = 15.3 mag, D = 4.6 × 2.4 × 1.9 km, orbital P = 4.03 yr, PHA) passed Earth at a nominal miss distance of 18.0 LD. Minimum miss distance 18.0 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=1989+AC&orb=1>, <http://www.jpl.nasa.gov/news/news.php?release=2012-397>, <www.jpl.nasa.gov/video/index.php?id=1175>, <en.wikipedia.org/wiki/4179_Toutatis>.
See also: <www.planetary.org/blogs/emily-lakdawalla/2012/12061004-toutatis-preview.html>, <www.space.com/18843-asteroid-toutatis-flyby-webcasts.html>, <www.universetoday.com/98923/two-asteroids-will-buzz-past-earth-on-december-11/>, <www.jpl.nasa.gov/news/news.php?release=2012-397>,
<science.nasa.gov/science-news/science-at-nasa/2012/12dec_toutatis/>, <cosmiclog.nbcnews.com/_news/2012/12/15/15919205-new-milestone-for-china-probe-snaps-close-ups-of-asteroid-toutatis?lite>, <www.lpi.usra.edu/sbag/meetings/jan2013/presentations/sbag8_presentations/>.
See also: 8 December 1992, 30 November 1996, 31 October 2000, 29 September 2004, 9 November 2008, 5 November 2069.

2012, Dec 13

Flyby of 4179 Toutatis (1989 AC, H = 15.3 mag, D = 4.6×2.4×1.9 km, NEA, PHA), at an altitude of just 3.2 km and at a relative velocity of 10.73 km/s, by the Chinese spacecraft Chang'e-2, launched on 1 October 2010 for a lunar survey mission. On 8 June 2011, Chang'e-2 left lunar orbit for the L2 Lagrangian point, to test the Chinese tracking and control network. It departed from L2 on 15 April 2012, heading for 4179 Toutatis, the largest PHA known. See: <en.wikipedia.org/wiki/Chang'e_2>.
See also: <www.planetary.org/blogs/emily-lakdawalla/2012/12061004-toutatis-preview.html>, <www.planetary.org/blogs/emily-lakdawalla/2012/12141551-change-2-imaging-of-toutatis.html>, <cosmiclog.nbcnews.com/_news/2012/12/15/15919205-new-milestone-for-china-probe-snaps-close-ups-of-asteroid-toutatis?lite>, <ow.ly/hqrvW>.

2012, Dec 14

Asteroid 2012 XB112 (H = 29.9 mag, D ≈ 4 m), passed Earth at a nominal miss distance of 0.8 LD. Minimum miss distance 0.8 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2012+XB112+&orb=1>.

2012, Dec 15

Asteroid 2012 XL134 (H = 27.8 mag, D ≈ 10 m), passed Earth at a nominal miss distance of 0.7 LD. Minimum miss distance 0.7 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2012+XL134+&orb=1>.

2012, Dec 17

UN - Committee on the Peaceful Uses of Outer Space (UN-COPUOS), Near-Earth objects, 2012-2013, Final report of the Action Team 14 on Near-Earth Objects. See: <www.unoosa.org/pdf/limited/c1/AC105_C1_L330E.pdf>.

2012, Dec 21

UN - Committee on the Peaceful Uses of Outer Space (UN-COPUOS), Near-Earth objects, 2011-2012. Recommendations of the Action Team on Near-Earth Objects for an international response to the near-Earth object impact threat. See: <www.oosa.unvienna.org/pdf/limited/c1/AC105_C1_L329E.pdf>.

2012, Dec 21

E. Underwood, 2012, Science, 338, 1521, "Sutter's Mill Meteorite produces mother lode of research." See: <www.sciencemag.org/content/338/6114/1521>.

2012, Dec 21

P. Jenniskens, M.D. Fries, Qing-Zhu Yin, et al., (the Sutter's Mill Meteorite Consortium), 2012, Science, 338, 1583, "Radar-enabled recovery of the Sutter's Mill Meteorite, a carbonaceous chondrite regolith breccia." See: <www.sciencemag.org/content/338/6114/1583.abstract>.

2012, Dec 21

Ph. Plait, HuffingtonPost.com, 21 December 2012, "How to defend Earth from asteroids." See: <www.huffingtonpost.com/phil-plait/defending-earth-from-asteroids_b_2341804.html>.

2012, Dec 29

Polonnaruwa Fireball and Meteorite. On 29 December 2012, a fireball lit up the early evening skies over the Sri Lanka province of Polonnaruwa. Hot, sparkling fragments of the fireball rained down across the countryside and witnesses reported the strong odour of tar or asphalt. See: <www.technologyreview.com/view/512381/astrobiologists-find-ancient-fossils-in-fireball-fragments/?goback=%2Emid_I471135276*416_*1>.
Ref.:
- J. Wallis, N. Miyake, R. Hoover, et al., 6 March 2013, e-print arXiv:1303.1845, Journal of Cosmology, 22, No.2, March 2013, "The Polonnaruwa meteorite: oxygen isotope, crystalline and biological composition." See: <arxiv.org/abs/1303.1845/>.

2013, Jan 1

9446 NEAs known (ranging in size up to ~32 km: 1036 Ganymed, 1924 TD, H = 9.45 mag, D = 31.7 km), of which 1363 PHAs (ranging in size from 140 m up to ~5 km: 4179 Toutatis, 1989 AC, H = 15.3 mag, D = 4.6×2.4×1.9 km, PHA). See: <neo.jpl.nasa.gov/stats/>.

2013, Jan

F. Albarede, C. Ballhaus, J. Blichert-Toft, et al., 2013, Icarus, 222, 44, "Asteroidal impacts and the origin of terrestrial and lunar volatiles." See: <adsabs.harvard.edu/abs/2013Icar..222...44A>.

2013, Jan

C. Beeson, J. Galache, M. Elvis, 2013, American Astronomical Society, AAS Meeting #221, #353.10, "Human missions to asteroids: scaling Near-Earth Asteroid discovery and characterization from Earth." See: <adsabs.harvard.edu/abs/2013AAS...22135310B>.

2013, Jan

T.L. Dunn, T.H. Burbine, W.F. Bottke, J.P. Clark, 2013, Icarus, 222, 273, "Mineralogies and source regions of near-Earth asteroids." See: <adsabs.harvard.edu/abs/2013Icar..222..273D>.

2013, Jan

D. Lazzaro, M.A. Barucci, D. Perna, et al., 2013, Astronomy & Astrophysics, 549, 2, "Rotational spectra of (162173) 1999 JU3, the target of the Hayabusa 2 mission." See: <adsabs.harvard.edu/abs/2013A%26A...549L...2L>.

2013, Jan

D.F. Lupishko, I.N. Teleusova, 2013, Solar System Research, 47, 20, "Axial rotation of near-earth asteroids: the influence of the YORP effect." See: <adsabs.harvard.edu/abs/2013SoSyR..47...20L>.

2013, Jan

R.G. Martin, M. Livio, 2013, Monthly Notices Royal Astronomical Society (Letters), 428, L11, "On the formation and evolution of asteroid belts and their potential significance for life." See: <adsabs.harvard.edu/abs/2013MNRAS.428L..11M>.
See also: <www.jpl.nasa.gov/news/news.php?release=2012-345>, <www.space.com/18326-asteroid-belt-evolution-alien-life.html>.

2013, Jan

N. Perez, R. Cardenas, O. Martin, R. Rojas, 2013, Astrophysics & Space Science, 343, 7, "Modeling the onset of photosynthesis after the Chicxulub asteroid impact." See: <link.springer.com/article/10.1007%2Fs10509-012-1256-6>.

2013, Jan

A. Riddle, J.G. Ries, 2013, American Astronomical Society, AAS Meeting #221, #353.08, "Precision astrometry of Near Earth Objects at McDonald Observatory." See: <adsabs.harvard.edu/abs/2013AAS...22135308R>.

2013, Jan 9

Asteroid 99942 Apophis (2004 MN4, H = 19.7 mag, D = 325 ± 15 m, M ≈ 4.7 × 1010 kg, orbital P = 0.89 yr, PHA) passed Earth at a nominal miss distance of 37.6 LD (= 0.097 AU). Minimum miss distance 37.6 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2004+MN4&orb=1>, <www.esa.int/Our_Activities/Space_Science/Herschel_intercepts_asteroid_Apophis>, <neo.jpl.nasa.gov/news/news178.html>, <en.wikipedia.org/wiki/99942_Apophis>.
Ref:
-  M. Delbò, A. Cellino, E.F. Tedesco, 2007, Icarus, 188, 266, "Albedo and size determination of potentially hazardous asteroids: (99942) Apophis." See: <adsabs.harvard.edu/abs/2007Icar..188..266D>;
- J.D. Giorgini, L.A.M. Benner, S.J. Ostro, et al., 2008, Icarus, 193, 1, "Predicting the Earth encounters of (99942) Apophis." See: <adsabs.harvard.edu/abs/2008Icar..193....1G>;
- S.-P Gong, J.-F Li, X.-Y. Zeng, 2011, Research in Astronomy and Astrophysics, 11, 1123, "Utilization of H-reversal trajectory of solar sail for asteroid deflection." See: <adsabs.harvard.edu/abs/2011RAA....11.1123G>.
- V.A. Shor, Yu. A. Chernetenko, O.M. Kochetova, N.B. Zheleznov, 2012, Solar System Research, 46, 119, "On the impact of the Yarkovsky effect on Apophis' orbit." See: <adsabs.harvard.edu/abs/2012SoSyR..46..119S>.
- D. Bancelin, F. Colas, W. Thuillot, et al., 2012, Astronomy & Astrophysics, 544, 15, "Asteroid (99942) Apophis: new predictions of Earth encounters for this potentially hazardous asteroid." See: <adsabs.harvard.edu/abs/2012A%26A...544A..15B>.
- L.L. Sokolov, A.A. Bashakov, T.P. Borisova, et al., 2012, Solar System Research, 46, 291, "Impact trajectories of the asteroid Apophis in the 21st century." See: <adsabs.harvard.edu/abs/2012SoSyR..46..291S>.
- D. Farnocchia, S.R. Chesley, P.W. Chodas, et al., 2013, Icarus, 224, 192, "Yarkovsky-driven impact risk analysis for asteroid (99942) Apophis." See: <www.sciencedirect.com/science/article/pii/S0019103513000821>.
See also: 13 April 1907, 14 April 1949, 14 April 1998, 19 June 2004, 13 April 2029, 23 March 1936, 11 September 2059, <neo.jpl.nasa.gov/apophis/>, <http://www.jpl.nasa.gov/news/news.php?release=2013-015>,
<www.space.com/19193-asteroid-apophis-bigger-live-webcasts.html>, <www.jpl.nasa.gov/asteroidwatch/newsfeatures.cfm?release=2013-017>.

2013, Jan 14-16

8th NASA Small Bodies Assessment Group meeting, 14-16 January 2013, Washington (DC, USA). See: <www.lpi.usra.edu/sbag/>, <icpi.nasaprs.com/8sbag>.
Among the presentations:
- P.A. Abell, 2013, "Human exploration and the role of NEOs: a NASA perspective." See: <ow.ly/h3J14>.
- I. Carnelli, A. Galuèz, 2013, "Asteroid Impact Mission (AIM).
ESA’s NEO exploration precursor." See: <ow.ly/h3KQi>.
- S. Ulamec, 2013, "Exploration of small bodies – activities at DLR." See: <ow.ly/h3Cj2>.
- J. Kawaguchi, 2013, "The future of human exploration and the role of NEOs." See: <ow.ly/hqKC8>.
- V. Hipkin, D. Laurin, 2013, "Canadian Space Agency
perspective." See: <ow.ly/hqKKJ/>.
- P. Michel, 2013, "International Primitive Exploration Working Group (IPEWG) 2013." See: <ow.ly/hqLc1>.
- A. Rivkin, M. Sykes, 2013, " NEO/Phobos/Deimos. Strategic Knowledge Gaps. SAT report summary." See: <ow.ly/hqLqa>.
- M. Horanyi, 2013, "Dust, the missing SKG." See: <ow.ly/hqLRk>.
- J. Kawaguchi, 2013, "Outline of the next asteroid sample return mission - Hayabusa 2." See: <ow.ly/hqMeI>.
- Chunlai Li, Han Li, 2013, "Chang'e 2 flyby of Toutatis." See: <ow.ly/hqMna>.
- M. Busch, L. Benner, M. Brozovic, et al., and the Goldstone and VLA observing staff, 2013, "Toutatis: 2012 radar observations." See: <ow.ly/hqMAv>.
- M. Nolan, 2013, "Status of Arecibo observations of NEOs." See: <ow.ly/hqN5G>.
- S.R. Chesley, 2013, "ISIS – Impactor for Surface and Interior Science." See: <ow.ly/hqNbD>.
- L. Johnson, 2013, "Near Earth Objects. The NEO Observation Program and planetary defense." See: <ow.ly/hqNg6>.

2013, Jan 15

Asteroid 2013 BR27 (H = 27.8 mag, D ≈ 10 m), passed Earth at a nominal miss distance of 0.6 LD. Minimum miss distance 0.5 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2013+BR27+&orb=1>.

2013, Jan 22

Deep Space Industries, Inc., a new private asteroid-mining company, presented an ambitious plan to exploit the resources of asteroids. See: <www.space.com/19362-asteroid-mining-deep-space-industries.html>,
<www.space.com/19368-asteroid-mining-deep-space-industries.html>, <www.space.com/19380-asteroid-mining-spaceflight-competition.html>,
<www.space.com/19462-asteroid-mining-deep-space-industries-birth.html>.

2013, Jan 28

Asteroid 2013 CY (H = 28.3 mag, D ≈ 8 m), passed Earth at a nominal miss distance of 0.9 LD. Minimum miss distance 0.9 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2013+CY+&orb=1>.

2013, Feb

M.-J. Kim, Y.-J. Choi, H.-K. Moon, et al., 2013, Astronomy & Astrophysics, 550, L11, "Optical observations of NEA 162173 (1999 JU3) during the 2011-2012 apparition." See: <adsabs.harvard.edu/abs/2013A%26A...550L..11K>.

2013, Feb

G.L. Matloff, 2013, Acta Astronomica, 82, 209, "Deflecting Earth-threatening asteroids using the solar collector: an improved model." See: <www.sciencedirect.com/science/article/pii/S0094576512001713>.

2013, Feb

V.P. Vasylyev, 2012, Earth, Moon, and Planets, 110, 67, "Deflection of hazardous Near-Earth Objects by high concentrated sunlight and adequate design of optical collector." See: <link.springer.com/article/10.1007%2Fs11038-012-9410-2>.

2013, Feb 1

K. Beatty, 2013, Sky & Telescope, 1 February 2013, "The first-ever meteorite from Mercury?" [NWA 7325] See: <http://www.skyandtelescope.com/astronomy-news/the-first-ever-meteorite-from-mercury/>.
See also: <phys.org/news/2013-04-meteorite-mystery-stone-mercury.html>.

2013, Feb 1

K. Miljković, G.S. Collins, S. Mannick, P.A. Bland, 2013, Earth and Planetary Science Letters, 363, 121, "Morphology and population of binary asteroid impact craters." See: <adsabs.harvard.edu/abs/2013E%26PSL.363..121M>.

2013, Feb 5

Asteroid 2013 CY32 (H = 28.1 mag, D ≈ 9 m), passed Earth at a nominal miss distance of 0.2 LD. Minimum miss distance 0.2 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2013+CY32+&orb=1>.

2013, Feb 8

H. Pälike, 2013, Science, 339, 655, "Impact and extinction." See: <www.sciencemag.org/content/339/6120/655.summary>.

2013, Feb 8

P.R. Renne, A.L. Deono, F.J. Hilgen, et al., 2013, Science, 339, 684, "Time scales of critical events around the Cretaceous-Paleogene boundary." See: <www.sciencemag.org/content/339/6120/684.abstract>. See also: <www.livescience.com/26933-chicxulub-cosmic-impact-dinosaurs.html>.

2013, Feb 11

Asteroid 2013 CL129 (H = 28.4 mag, D ≈ 8 m), passed Earth at a nominal miss distance of 0.7 LD. Minimum miss distance 0.7 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2013+CL129+&orb=1>.
See also: 11 February 1940.

2013, Feb 11-22

UN - Committee on the Peaceful Uses of Outer Space (UN-COPUOS) Scientific and Technical SubCommittee, 50th session, in Vienna (Austria). WG NEO and Action Team 14 on NEOs did meet, chaired by Sergio Camacho (Mexico).
See: <www.unoosa.org/oosa/en/COPUOS/stsc/2013/index.html>, <www.oosa.unvienna.org/pdf/limited/c1/AC105_C1_L328E.pdf>, <www.space.com/19833-russia-meteor-asteroid-threat.html>, <www.space.com/19840-asteroid-impact-threat-united-nations.html>.
Draft report:
<www.oosa.unvienna.org/pdf/limited/c1/AC105_C1_L333E.pdf>.
Report:
<www.oosa.unvienna.org/pdf/reports/ac105/AC105_1038E.pdf>.
Technical presentations:
- S. Camacho, 2013, "Report of the Action Team on Near-Earth Objects: recommendations for an international response to a NEO threat." See: <www.oosa.unvienna.org/pdf/pres/stsc2013/2013neo-01E.pdf>.
- A. Harris, L. Drube, 2013, "Mitigation of the NEO impact threat." See: <www.oosa.unvienna.org/pdf/pres/stsc2013/2013neo-03E.pdf>.
- L.N. Johnson, D. Koschny, 2013, "Recommendations of the Action Team on NEOs for an international response to the Near-Earth Object impact threat." See: <www.oosa.unvienna.org/pdf/pres/stsc2013/2013neo-04E.pdf>.
- L.N. Johnson, 2013, "Flyby of 2012 DA14: preliminary results." See: <www.oosa.unvienna.org/pdf/pres/stsc2013/2013neo-05E.pdf>.
- L.N. Johnson, 2013, "Chelyabinsk Event 15 Feb 2013: initial preliminary analysis." See: <www.oosa.unvienna.org/pdf/pres/stsc2013/2013neo-06E.pdf>.
- D. Koschny, "The status of ESA's Near-Earth Object segment." See: <www.oosa.unvienna.org/pdf/pres/stsc2013/tech-36E.pdf>.
- T. Spahr, "NEO threat detection and warning: plans for an international asteroid warning network." See: <www.oosa.unvienna.org/pdf/pres/stsc2013/2013neo-02E.pdf>.
- D. Yeomans, 2013, NASA's Near-Earth Object Program Office and 2012 DA14. See: <www.oosa.unvienna.org/pdf/pres/stsc2013/tech-33E.pdf>.
- M. Yoshikawa, 2013, Japan's asteroid missions Hayabusa and Hayabusa 2. See: <www.oosa.unvienna.org/pdf/pres/stsc2013/tech-35E.pdf>.

2013, Feb 14

P. Lubin, G. Hughes, 2013, UC Santa Barbera News Release, "California scientists propose system to vaporize asteroids that threaten Earth." See: <www.ia.ucsb.edu/pa/display.aspx?pkey=2943>.

2013, Feb 15

C.B. Agee, N.V. Wilson, F.M. McCubbin, et al., 2013, Science, 339, 780, "Unique meteorite from early Amazonian Mars: water-rich basaltic breccia Northwest Africa 7034." See: <www.sciencemag.org/content/early/2013/01/02/science.1228858>.
See also: <www.nasa.gov/mission_pages/mars/news/mars20130103.html>, <www.space.com/19117-mars-meteorite-martian-missing-link.html>.

2013, Feb 15, 03:20

Chelyabinsk Superbolide, Fireball, Airburst and Meteorite. Infrasound data taken around the globe indicate that the pre-impacting asteroid had an estimated size of 17 to 20 meters and an estimated mass of 11,000 tons. It was an estimated 24th mag object just before impact. The asteroid approached the Earth along a direction that remained within 15 degrees of the direction of the Sun. Asteroid detection telescopes cannot scan regions of the sky this close to the Sun. The amount of energy released during the event was 440 kT TNT. The event took 32.5 seconds from atmospheric entry, with a velocity of ~18.6 km/s, to the meteorite's airborne disintegration at an altitude of 23.3 km. Three meteorite debris impact sites were found, two of which are in an area near Chebarkul Lake, west of Chelyabinsk (Ural, Russia). The third site was found ~ 80 km further to the northwest, near the town of Zlatoust. One of the fragments that struck near Chebarkul left a hole six meters in diameter in the frozen surface of a lake. The airburst shock wave, which arrived 88 seconds after the superbolide's flash, damaged numerous buildings, and blew out thousands of glass windows amid frigid winter weather. Over 1500 people needed medical attention for minor injuries.
See: <rt.com/news/meteorite-crash-urals-chelyabinsk-283/>, <marateaman.livejournal.com/27910.html>, <www.space.com/19801-possible-meteor-blast-russia.html>,
<http://www.jpl.nasa.gov/news/news.php?release=2013-061>, <www.jpl.nasa.gov/news/news.php?release=2013-061>, <blogs.nature.com/news/2013/02/incoming-russia-feels-meteor-blast.html >, <science.time.com/2013/02/15/photos-russia-meteor-explosion-shatters-windows-injures-hundreds/#ixzz2OI5RTbA4>, <www.nytimes.com/2013/02/16/world/europe/meteorite-fragments-are-said-to-rain-down-on-siberia.html?nl=todaysheadlines&emc=edit_th_20130216&_r=1&>, <articles.washingtonpost.com/2013-02-15/opinions/37117891_1_meteor-da14-earth>, <www.space.com/19823-russia-meteor-explosion-complete-coverage.html>, <www.space.com/19833-russia-meteor-asteroid-threat.html>, <www.space.com/19834-russian-meteor-crash-trail-and-trajectory-animated.html>, <www.space.com/19837-russia-fireball-asteroid-impact-surprise.html>, <apod.nasa.gov/apod/ap130218.html>, <apod.nasa.gov/apod/ap130223.html>, <www.space.com/19840-asteroid-impact-threat-united-nations.html>, <dawn.com/2013/02/16/divers-scour-russian-lake-after-meteor-strike-injures-1200/> <www.space.com/19847-russian-meteorites-found-chelyabinsk-fireball.html>, <www.space.com/19852-russian-meteor-infrasound.html>, <rt.com/news/meteorite-rush-biggest-fragment-404/>, <blogs.nature.com/news/2013/02/more-details-of-russian-meteor-emerge.html>, <www.nature.com/news/eyes-and-ears-1.12441>, <www.space.com/19966-russian-meteor-asteroid-deflection-options.html>, <www.space.com/19974-russian-meteor-explosion-origin-size.html>, <neo.jpl.nasa.gov/news/fireball_130301.html>, <neo.jpl.nasa.gov/fireballs/>, <www.skyandtelescope.com/community/skyblog/newsblog/Update-on-the-Russian-Mega-Meteor-195553631.html>, <www.space.com/20323-russia-meteor-explosion-meteorites.html>, <www.thespacereview.com/article/2277/1>, <www.nytimes.com/2013/03/21/science/space/better-asteroid-detection-needed-experts-say.html?_r=1&>, <www.nytimes.com/2013/03/26/science/space/in-asteroids-aftermath-a-sigh-of-relief.html?pagewanted=all&_r=2&;>, <en.wikipedia.org/wiki/2013_Russian_meteor_event>.
Ref:
- P. Brown, February 2013, WGN, Journal of the International Meteor Organization, 41, 22, "A preliminary report on the Chelyabinsk Fireball/Airburst." See: <adsabs.harvard.edu/abs/2013JIMO...41...22B>.
- J.I. Zuluaga, I. Ferrin, 21 February 2013, e-print arXiv:1302.5377, "A preliminary reconstruction of the orbit of the Chelyabinsk Meteoroid." See: <arxiv.org/abs/1302.5377>.
- J.I. Zuluaga, I. Ferrin, S. Geens, 7 March 2013, submitted to Earth and Planetary Science Letters, e-print arXiv:1303.1796, "The orbit of the Chelyabinsk event impactor as reconstructed from amateur and public footage." See: <adsabs.harvard.edu/abs/2013arXiv1303.1796Z>,
- C. Parigini, J.L. Cano, R. Haya-Ramos, 8 April 2013, e-print arXiv:1304.2410, "Preliminary estimation of the footprint and survivability of the Chelyabinsk Meteor fragments." See:<adsabs.harvard.edu/abs/2013arXiv1304.2410P>.
- A. Le Pichon, L. Ceranna, C. Pilger, et al., 28 July 2013, Geophysical Research Letters, 40, 3732, "The 2013 Russian fireball largest ever detected by CTBTO infrasound sensors." See: <adsabs.harvard.edu/abs/2013GeoRL..40.3732L>.
- T. Kohout, M. Gritsevich, V.I. Grokhovsky, et al., 24 September 2013, Icarus, in press, e-print arXiv: 1309.6081, "Mineralogy, reflectance spectra, and physical properties of the Chelyabinsk LL5 chondrite, insight into shock induced changes in asteroid regoliths." See: <adsabs.harvard.edu/abs/2013arXiv1309.6081K>.

2013, Feb 15, 19:25

Asteroid 2012 DA14 (H = 24.0 mag, D ≈ 40 × 20 m), discovered on 23 February 2012 by the Spanish Observatorio Astronomico de la Sagra, passed Earth at a nominal miss distance of 0.08859 LD (= 5.3453 REarth from the geocenter, = 34,055 km from the geocenter, = 27,684 km from the Earth surface; thus well within the Geostationary Earth Orbit, 35,786 km above the equator), with a relative velocity of 7.8 km/s. Minimum miss distance 0.08859 LD (= 5.3453 REarth from the geocenter, = 34,055 km from the geocenter, = 27,684 km from the Earth surface).
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2012+DA14&orb=1>, <www.planetary.org/blogs/guest-blogs/3418.html>, <http://neo.jpl.nasa.gov/news/news177.html>.
Ref:
- J. de Leon, J.L. Ortiz, N. Pinilla-Alonso, et al., July 2013, Astronomy & Astrophysics, 555, L2, "Visible and near-infrared observations of asteroid 2012 DA14 during its closest approach of February 15th, 2013." See: <adsabs.harvard.edu/abs/2013A%26A...555L...2D>.
- I.Wlodarczyk, 2012, Monthly Notices of the Royal Astronomical Society, 427, 1175, "The potentially dangerous asteroid 2012 DA14." See: <adsabs.harvard.edu/abs/2012MNRAS.427.1175W>.
- S. Urakawa, M. Fujii, H. Hanayama, et al., 25 August 2013, Publications Astronomical Society of Japan, 65, L9, "Visible spectroscopic observations of Near-Earth Object 2012 DA14." See: <adsabs.harvard.edu/abs/2013PASJ...65L...9U>.
See also: <www.oam.es/Asteroid_2012DA14.htm>, <en.ria.ru/science/20120226/171543660.html>, <neo.jpl.nasa.gov/news/news174.html>, <www.space.com/14828-asteroid-impact-panic-psychology.html>, <www.physorg.com/news/2012-03-near-miss-asteroid-year.html>, <www.space.com/19432-close-approach-of-asteroid-2012-da14-fear-vs-fact-video.html>, <neo.jpl.nasa.gov/news/news177.html>, <http://www.jpl.nasa.gov/news/news.php?release=2013-041>,
<www.space.com/19432-close-approach-of-asteroid-2012-da14-fear-vs-fact-video.html>, <www.space.com/19540-asteroid-2012-da14-earth-flyby.html>, <www.space.com/19646-asteroid-2012-da14-earth-flyby-complete-coverage.html>, <www.space.com/19669-asteroid-2012-da14-earth-flyby-explained-infographic.html>,
<www.space.com/19724-asteroid-2012-da14-misses-satellites-and-earth-fortunately-new-animation.html>,
<www.space.com/19729-asteroid-2012-da14-earth-close-shave.html>, <www.space.com/19821-asteroid-2012-da14-flyby-meteor.html>, <www.space.com/19825-asteroid-2012-da14-first-photos.html>, <earthsky.org/space/asteroid-2012-da14-will-pass-very-close-to-earth-in-2013>, <www.space.com/19840-asteroid-impact-threat-united-nations.html>, <www.jpl.nasa.gov/news/news.php?release=2013-063>, <b612foundation.org/faq-on-the-chelyabinsk-asteroid-impact/>, <b612foundation.org/so-how-big-are-these-neos-anyway/>, <en.wikipedia.org/wiki/2012_DA14>, 17 February 1918, 19 August 2004, 16 February 2012, 15 February 2046, 15 February 2087.

2013, Feb 16, 03:45

California Bay Area Fireball.
See: <www.space.com/19836-meteor-california-bay-area.html>.

2013, Feb 16

W.J. Broad, 2013, The New York Times, 16 February 2013, "Vindication for entrepreneurs watching sky: yes, it can fall." See: <www.nytimes.com/2013/02/17/science/space/dismissed-as-doomsayers-advocates-for-meteor-detection-feel-vindicated.html?smid=fb-share&_r=1&>.

2013, Feb 17

L. David, 2013, Space.com, 17 February 2013, "United Nations reviewing asteroid impact threat." See: <www.space.com/19840-asteroid-impact-threat-united-nations.html>.

2013, Feb 19

UN - Committee on the Peaceful Uses of Outer Space (UN-COPUOS) Scientific and Technical SubCommittee, 50th session, 11-22- February 2013, Vienna (Austria).
Draft report of the Working Group on Near-Earth Objects.
See: <www.unoosa.org/pdf/limited/c1/AC105_C1_NEO_2013_L01E.pdf>. See also: <www.huffingtonpost.com/2013/03/18/deflecting-dangerous-asteroid-geopolitical-nightmare_n_2899733.html>.

2013, Feb 20

A.C. Revkin, 2013, The New York Times, "Can humans do better than dinosaurs when it comes to incoming space objects?" See: <dotearth.blogs.nytimes.com/2013/02/20/can-humans-do-better-than-dinosaurs-when-it-comes-to-incoming-space-objects/>.

2013, Feb 21

E. Solano, C. Rodrigo, R. Pulido, B. Carry, 2013, Astronomische Nachrichten, e-print arXiv:1302.5375, "Precovery of near-Earth asteroids by a citizen-science project of the Spanish Virtual Observatory." See: <adsabs.harvard.edu/abs/2013arXiv1302.5375S>.

2013, Feb 21

J.I. Zuluaga, I. Ferrin, 2013, e-printarXiv:1302.5377, "A preliminary reconstruction of the orbit of the Chelyabinsk Meteoroid." See: <arxiv.org/abs/1302.5377>.
See also: <astrobites.org/2013/03/03/reconstructing-the-orbit-of-the-chelyabinsk-meteoroid/>.

2013, Feb 24

B. King, 2013, Universetoday.com, 24 February 2013, "Russian fireball inspires journey into the world of meteorites." See: <www.universetoday.com/100192/russian-fireball-inspires-journey-into-the-world-of-meteorites/>.

2013, Feb 25

Launch of NEO Surveillance Satellite (NEOSSat), a Canadian Space Agency (CSA) and Defence Research & Development Canada (DRDC) space telescope, to discover NEOs with the Near-Earth Space Surveillance (NESS). Launched by the Indian carrier PSLV-CA/C20 from Sriharikota (India), into a Sun-synchronous orbit: a 15-cm optical telescope with 0º.86 FoV, NEOSSat will search for Aten asteroids and inner-Earth objects (IEOs) near the ecliptic within 45º from the Sun, which may not be visible from ground-based observatories. Limiting magnitude v ≈ 20 mag with 100 sec exposure. Goal: to detect at least 50% of all IEOs with D > 1 km.
See: <www.asc-csa.gc.ca/eng/satellites/neossat/>, <www.mscinc.ca/products/neossat.html>.
Ref:
- A.R. Hildebrand, R.D. Cardinal, K.A. Carroll, et al., 2004, Earth, Moon, and Planets, 95, 33, "Advantages of searching for asteroids from low earth orbit: the NEOSSat mission." See: <adsabs.harvard.edu/abs/2007IAUS..236..363B>;
- A.R. Hildebrand, E.F. Tedesco, K.A. Carroll, et al., 2008, in: Proc. Asteroids, Comets, Meteors 2008, 14-18 July 2008, Baltimore (MD, USA), paper id. 8293, LPI Contribution No. 1405, "The Near Earth Object Surveillance Satellite (NEOSSat) mission will conduct an efficient space-based asteroid survey at low solar elongations." See: <adsabs.harvard.edu/abs/2008LPICo1405.8293H>.
- V. Isbrucker, J. Stauder, D. Laurin, A. Hollinger, September 2012, in: Space Telescopes and Instrumentation 2012: Optical, Infrared, and Millimeter Wave, Proc. SPIE, Volume 8442, id. 84424J-84424J-17 (2012), "Stray light control for asteroid detection at low solar elongation for the NEOSSat micro-satellite telescope." See: <adsabs.harvard.edu/abs/2012SPIE.8442E..4JI>.
See also:
<ow.ly/i5JwX>, <www.unoosa.org/pdf/pres/stsc2009/tech-26.pdf>, <www.unoosa.org/pdf/reports/ac105/AC105_976E.pdf>,
<www.nrc-cnrc.gc.ca/eng/dimensions/issue8/asteroids.html>, <www.thehindu.com/news/national/pslv-to-launch-5-foreign-satellites-in-december/article3927164.ece>, <www.space.com/19939-asteroid-satellite-indian-rocket-launch.html>, <en.wikipedia.org/wiki/Near_Earth_Object_Surveillance_Satellite>, <en.wikipedia.org/wiki/Polar_Satellite_Launch_Vehicle>.

2013, Feb 26

L. David, 2013, Space.com, 26 February 2013, "Russian meteor fallout: what to do next time?" See: <www.space.com/19966-russian-meteor-asteroid-deflection-options.html>.

2013, Feb 28

S. Siregar, E. Soegiartini, 2013, in: D. Herdiwijaya (ed.), Proc. 4th Southeast Asia Astronomy Network Meeting, 10-11 October 2012, Bandung (Indonesia), e-print arXiv:1302.7133, "Orbital Evolution of 4179 Toutatis."
See: <adsabs.harvard.edu/abs/2013arXiv1302.7133S>.

2013, Feb 28

Asteroid 2013 EB (H = 27.2 mag, D ≈ 15 m), passed Earth at a nominal miss distance of 1.0 LD. Minimum miss distance 1.0 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2013+EB+&orb=1>.

2013, Mar

G.F. Gronchi, G.B. Valsecchi, 2013, Monthly Notices of the Royal Astronomical Society, 429, 2687, "On the possible values of the orbit distance between a near-Earth asteroid and the Earth." See: <adsabs.harvard.edu/abs/2013MNRAS.429.2687G>.

2013, Mar

E.T. Lu, H. Reitsema, J. Troeltzsch, S. Hubbard, 2013, New Space, 1, 42, "The B612 Foundation Sentinel Space Telescope." See: <online.liebertpub.com/doi/pdfplus/10.1089/space.2013.1500>.

2013, Mar

J. Ormö, A.P. Rossi, K.R. Housen, 2013, Meteoritics & Planetary Science, 48, 403, "A new method to determine the direction of impact: asymmetry of concentric impact craters as observed in the field (Lockne), on Mars, in experiments, and simulations." See: <adsabs.harvard.edu/abs/2013M%26PS...48..403O>.

2013, Mar

A.S. Rivkin, E.S. Howell, R.J. Vervack, et al., Icarus, 223, 493, "The NEO (175706) 1996 FG3 in the 2-4 μm spectral region: evidence for an aqueously altered surface."  See: <www.sciencedirect.com/science/article/pii/S0019103512005301>.

2013, Mar

D.S. Robertson, W.M. Lewis, P.M. Sheehan, O.B. Toon, 2013, Journal of Geophysical Research Biogeosciences, 118, 329, "K-Pg extinction: reevaluation of the heat-fire hypothesis." See: <onlinelibrary.wiley.com/doi/10.1002/jgrg.20018/abstract>.
See also: <www.colorado.edu/news/features/ancient-asteroid-may-have-triggered-global-firestorm-earth>.

2013, Mar 4

Asteroid 2013 EC (H = 27.9 mag, D ≈ 9 m), passed Earth at a nominal miss distance of 1.0 LD. Minimum miss distance 1.0 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2013+EC+&orb=1>.

2013, Mar 5

Iowa Meteorite Crater, Decorah Impact Structure, confirmed.
See: <www.usgs.gov/newsroom/article.asp?ID=3521>.

2013, Mar 6

J. Wallis, N. Miyake, R. Hoover, et al., 2013, e-print arXiv:1303.1845, Journal of Cosmology, 22, No.2. March 2013, "The Polonnaruwa meteorite: oxygen isotope, crystalline and biological composition." See:<arxiv.org/abs/1303.1845>.
See also: <en.wikipedia.org/wiki/Polonnaruwa_%28meteorite%29>.

2013, Mar 7

J.I. Zuluaga, I. Ferrin, S. Geens, 2013, submitted to Earth and Planetary Science Letters, e-print arXiv:1303.1796, "The orbit of the Chelyabinsk event impactor as reconstructed from amateur and public footage." See: <adsabs.harvard.edu/abs/2013arXiv1303.1796Z>.
See also: <ogleearth.com/2013/03/three-trajectory-models-of-the-chelyabinsk-meteoroid-compared/>.

2013, Mar 9, 02:41

Asteroid 2013 EC20 (H = 29.0 mag, D ≈ 6 m), passed Earth at a nominal miss distance of 0.4 LD. Minimum miss distance 0.4 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2013+EC20+&orb=1>.
See also: 13 March 1999.

2013, Mar 9, 12:09

Asteroid 2013 ET (H = 23.1 mag, D ≈ 85 m), passed Earth at a nominal miss distance of 2.5 LD. Minimum miss distance 2.5 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2013+ET+&orb=1>.
See also: <www.space.com/20149-asteroids-buzz-earth-week.html>, <www.jpl.nasa.gov/news/news.php?release=2013-101>.

2013, Mar 12

K. Kremer, 2013, UniverseToday.com, "NASA’s KaBOOM experimental asteroid radar aims to thwart Earth’s Kaboom."
See: <www.universetoday.com/100400/nasas-kaboom-experimental-asteroid-radar-aims-tothwart-earths-kaboom>.

2013, Mar 17

Lunar asteroid impact. On March 17, 2013, an object about the size of a small boulder (D ≈ 0.3 - 0.4 m, ~ 40 kg) hit the lunar surface in Mare Imbrium at a speed of ~ 90,000 km/h, creating a new crater 20 meters wide. See: <science1.nasa.gov/science-news/science-at-nasa/2013/16may_lunarimpact/>.
See also: <www.space.com/21195-56-000-mph-space-rock-hits-moon-explosion-seen-video.html>, <www.space.com/21197-moon-crash-meteor-impact-explosion.html>.

2013, Mar 18

A.Y. Glikson, I. Tonguç Uysal, J.D. Fitz Gerald, E. Saygin, 2013, Tectonophysics, 589, 57, "Geophysical anomalies and quartz microstructures, Eastern Warburton Basin, North-east South Australia: tectonic or impact shock metamorphic origin?" See: <www.sciencedirect.com/science/article/pii/S0040195113000188>.
See also: "World's third largest asteroid impact zone found in South Australia", <phys.org/news/2013-02-world-largest-asteroid-impact-zone.html#nwlt>.

2013, Mar 18-22

44th Lunar and Planetary Science Conference, The Woodlands (TX, USA), 18-22 March 2013. See: <www.lpi.usra.edu/meetings/lpsc2013/>.
Among the papers:
- C. Alonso, J.M. Madiedo, J.M. Trigo-Rodriguez, et al., 2013, LPI Contribution No. 1719, p. 1423, "Linking a fireball to its likely parent Near Earth Object by means of orbital analysis software tools." See: <adsabs.harvard.edu/abs/2013LPICo1719.1423A>.
- H. Busemann, C. Alwmark, U. Böttger, et al., 2013, LPI Contribution No. 1719, p. 2243, "A Consortium Status Report: the characterisation of the asteroid Itokawa Regolith — a correlated study by X-ray tomography, micro-raman spectroscopy, and high-sensitivity noble gas analysis." See: <adsabs.harvard.edu/abs/2013LPICo1719.2243B>.
- A.F. Cheng, 2013, LPI Contribution No. 1719, p. 2985, "AIDA: test of Asteroid Deflection by Spacecraft Impact."
- T.L. Dunn, T.H. Burbine, W.F. Bottke, J.P. Clark, 2013, LPI Contribution No. 1719, p. 1197, "Mineralogies and source regions of Near Earth Asteroids." See: <adsabs.harvard.edu/abs/2013LPICo1719.1197D>.
- N.A. Konovalova, J.M. Madiedo, J.M. Trigo-Rodríguez, 2013, LPI Contribution No. 1719, p. 1479, "Analysis of a large meteorite-dropping fireball from the Apollo NEA family." See: <adsabs.harvard.edu/abs/2013LPICo1719.1479K>.
- J.R. Moore, M. Sharma, 2013, LPI Contribution No. 1719, p. 2431, "The K-Pg impactor was likely a high velocity comet." See: <adsabs.harvard.edu/abs/2013LPICo1719.2431M>.
- A.S. Rivkin, E.S. Howell, J.P. Emery, J.M. Sunshine, 2013, LPI Contribution No. 1719, p. 2070, "Does the solar wind create OH on NEO surfaces?: Observations of 433 Eros and 1036 Ganymed." See: <adsabs.harvard.edu/abs/2013LPICo1719.2070R>.
- A.H. Spitz, C.W. Hergenrother, D.H. Hill, D.S. Lauretta, 2013, LPI Contribution No. 1719, p. 2934, "OSIRIS-REx target asteroids! Involving the public in asteroid research and scientists with the public." See: <adsabs.harvard.edu/abs/2013LPICo1719.2934S>.
- A. Springmann, P.A. Taylor, E.S. Howell, M.C. Nolan, 2013, LPI Contribution No. 1719, p. 2915, "Are the radar scattering properties of Near-Earth Asteroids correlated with size, shape, or spin?" See: <adsabs.harvard.edu/abs/2013LPICo1719.2915S>.
- J. Straub, A. Venkataramanasastry, 2013, LPe:I Contribution No. 1719, p. 2449, "A space debris-enhanced intervention mission to a Near-Earth Asteroid." See: <adsabs.harvard.edu/abs/2013LPICo1719.2449S>.
- F.P. Velichko, V.A. Psarev, N.N. Kiselev, et al., 2013, LPI Contribution No. 1719, p. 2372, "Photometry and polarimetry of largest NEA 1036 Ganymed." See: <adsabs.harvard.edu/abs/2013LPICo1719.2372V>.

2013, Mar 19

Threats from Space: A Review of U.S. Government Efforts to Track and Mitigate Asteroids and Meteors - Part 1. See: <democrats.science.house.gov/hearing/threats-space-review-us-government-efforts-track-and-mitigate-asteroids-and-meteors-part-1>, <science.house.gov/press-release/smith-avoiding-asteroid-threats-requires-innovation-commitment-and-diligence>, <science.house.gov/sites/republicans.science.house.gov/files/documents/HHRG-113-SY-20130306-SD001_0.pdf>, <science.house.gov/sites/republicans.science.house.gov/files/documents/HHRG-113-%20SY-WState-S000244-20130319.pdf>, <spaceref.com/news/viewsr.html?pid=43612>, <spaceref.com/news/viewsr.html?pid=43614l>, <spaceref.com/news/viewsr.html?pid=43620>.
See also: <www.space.com/20084-dangerous-asteroids-russian-meteor-hearing.html>, <www.space.com/20292-asteroid-threat-earth-congress.html>, <www.space.com/20310-russian-meteor-missile-attack-military.html>, <www.nytimes.com/2013/03/21/science/space/better-asteroid-detection-needed-experts-say.html?ref=science&_r=2&>, <science.time.com/2013/03/28/nasas-thoughts-on-dealing-with-unidentified-near-earth-asteroids-pray/>.

2013, Mar 23

Eastern USA Fireball. Witnessed from along the Atlantic coast ranging from Maine (USA) to North Carolina (USA).
See: <www.amsmeteors.org/2013/03/eastern-usa-fireball-march-22-2013/>, <www.space.com/20360-east-coast-meteor-fireball.html>, <www.space.com/20362-east-coast-meteor-asteroid-size-nasa.html>.

2013, Mar 24

S. Marchi, W.F. Bottke, B.A. Cohen, et al., 2013, Nature Geoscience, 6, 303, "High-velocity collisions from the lunar cataclysm recorded in asteroidal meteorites."
See: <www.nature.com/ngeo/journal/v6/n4/full/ngeo1769.html>.
See also: <http://www.jpl.nasa.gov/news/news.php?release=2013-114>.

2013, Mar 26

D. Dhingra, C.M. Pieters, J.W. Head, P.J. Isaacson, 2013, Geophysical Research Letters, 40, 1043, "Large mineralogically distinct impact melt feature at Copernicus crater – Evidence for retention of compositional heterogeneity."
See: <onlinelibrary.wiley.com/doi/10.1002/grl.50255/abstract>.
See also: <www.brown.edu/research/news/2013-04/pre-existing-mineralogy-may-survive-lunar-impacts>.

2013, Mar-Apr

R.R. Landis, P.A. Abell, D.R. Adamo, B.W. Barbee, L.N. Johnson, 2013, Acta Astronautica, 84, 161, "The first steps towards a de minimus, affordable NEA exploration architecture." See: <www.sciencedirect.com/science/article/pii/S0094576512003840>.

2013, Mar-Apr

A.I. Nazarenko, I.V. Usovik, 2013, Acta Astronautica, 84, 153,"Gravitation effect on a flux of sporadic micrometeoroids in the vicinity of near-Earth orbits." See: <www.sciencedirect.com/science/article/pii/S0094576512000446>.

2013, Apr

G. D'Abramo, 2013, Chance, 26, 17, "How to defuse Earth impact threat announcements." See: <adsabs.harvard.edu/abs/2013Chanc..26...17D>.

2013, Apr

S. Greenstreet, B. Gladman, 2013, Astrophysical Journal (Letters), 767, L18, "High-inclination Atens are indeed rare." See: <adsabs.harvard.edu/abs/2013ApJ...767L..18G>.

2013, Apr

N. Pinilla-Alonso, V. Lorenzi, H. Campins, et al., 2013, Astronomy & Astrophysics, 552, 79, "Near-infrared spectroscopy of 1999 JU3, the target of the Hayabusa 2 mission." See: <adsabs.harvard.edu/abs/2013A%26A...552A..79P>.

2013, Apr

G. Schilling, 2013, Knal! Een abc van kosmische inslagen (Hilversum: Fontaine Uitgevers B.V., ISBN 9059564995).

2013, Apr

R. Wyatt, 2013, Communicating Astronomy with the Public, 13, 24, "Visualising astronomy: using impact to inform." See: <adsabs.harvard.edu/abs/2013CAPJ...13...24W>.

2013, Apr 1

B. Rozitis, S. F. Green, 2012, Monthly Notices of the Royal Astronomical Society, 430, 1376, "The strength and detectability of the YORP effect in Near-Earth Asteroids: a statistical approach." See: <adsabs.harvard.edu/abs/2013MNRAS.430.1376R>.

2013, Apr 8

C. Parigini, J.L. Cano, R. Haya-Ramos, 2013, e-print arXiv:1304.2410, "Preliminary estimation of the footprint and survivability of the Chelyabinsk Meteor fragments." See: <adsabs.harvard.edu/abs/2013arXiv1304.2410P>.

2013, Apr 10

NASA press release on its plan to robotically capture a small Near-Earth Asteroid and redirect it safely to the Earth-Moon system, where astronauts can visit and explore it. See: <http://www.jpl.nasa.gov/news/news.php?release=2013-131>.
See also: item 27-30 September 2011, <www.kiss.caltech.edu/study/asteroid/asteroid_final_report.pdf>, <www.thespacereview.com/article/2283/1>, <www.space.com/20606-nasa-asteroid-capture-mission-images.html>,
<www.space.com/22605-nasa-asteroid-capture-mission-legal-issues.html>.

2013, Apr 11

T.J. Jopek, I.P. Williams, 2013, Monthly Notices of the Royal Astronomical Society, 430, 2377, "Stream and sporadic meteoroids associated with near-Earth objects." See: <mnras.oxfordjournals.org/content/430/3/2377>.

2013, Apr 13

Asteroid 2010 GM23 (H = 24.7 mag, D ≈ 40 m) passed Earth at a nominal miss distance of 3.9 LD. Minimum miss distance 0.9 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2010+GM23+&orb=1>.

2013, Apr 14-19

3rd International Academy of Astronautics (IAA) Planetary Defense Conference, Flagstaff (Arizona, USA), 15-19 April 2013. See: <www.pdc2013.org/>.
See also: <www.parabolicarc.com/2013/04/16/garver-nasa-to-seek-private-sector-partnership-on-asteroid-retrieval-mission/>, <b612foundation.org/tag/planetary-defense-conference/>.
Presentations,
see: <www.wuala.com/IAAbackup/Big%20Files%20Flagstaff/?key=G6FttSjkXG9T>.
Programme:
April 14
Special Session: Preliminary Look At The Chelyabinsk Event.
- D.D. Morrison, "Opening remarks."
- D.A. Kring, "A geologic and meteoritic perspective of impact airbursts and insights into the Chelyabinsk event."
- P.G. Brown, "The Chelyabinsk airburst: a preliminary overview of observations."
- M.B.E. Boslough, "Computational simulations of Chelyabinsk and Tunguska airbursts."
April 15
- J.-M. Contant, Secretary General, IAA, "Welcoming remarks."
- L.B. Garver, Deputy Administrator, NASA, "Keynote."
Session 1: Background
- D.D. Morrison, "Historical perspectives on planetary defense."
- S. Camacho, "United Nations recommendations for an international response to the NEO impact threat."
- D. Koschny, "The NEO Precursor Services of ESA's Space Situational Awareness Programme."
- B.M. Shustov, "On the national program of counteraction space threats."
- L. Johnson, "NASA's Near Earth Object Program and activities."
- A.W. Harris (DLR), "NEOShield: progress towards an international NEO mitigation program."
Session 2: Discovering NEOs –  the state of the art
- M. Granvik, "Source regions for Near Earth Objects."
- T.B. Spahr, "Near-Earth Object survey summary – the Minor Planet Center."
- D.K. Yeomans, "The NEO surveys."
- E.V. Ryan, "Existing and expected Near-Earth Object follow-up capabilities."
- J.L. Tonry, "Asteroid Terrestrial-impact Last Alert System - ATLAS."
- A.K. Mainzer, "NEOCAM: the Near-Earth Object CAMera."
- E. Lu, "The Sentinel Space Telescope – overview and status."
Session 3: NEO physical characterization
- D. Polishook, "Looking into asteroid interiors by astronomical observations."
- N.A. Moskovitz, "Ground-based optical observations of NEO fly-bys."
- K.A. Holsapple, "What do we know about asteroid interiors? What matters for."
- D.J. Scheeres, "The strength of small rubble pile asteroids."
- T.S. Statler, "The YORP effect on rubble piles: how centrifugal reshaping of small aggregates kills the YORP cycle."
- I. Debono, "Relevance of asteroid shape and rotational properties to impact."
- C.S. Plesko, "Nuclear deflection of PHOs as function of burst height, yield, and composition."
April 16
- L.A.M. Benner, "Physical properties of Near-Earth Objects from radar observations."
- D.E. Trilling, "Explore NEOs: the Warm Spitzer Near Earth Object Characterization Survey."
- P.W. Chodas, "2011 AG5."
Session 4: Mitigation techniques & missions
- S.R. Chesley: "The ISIS mission concept: an Impactor for Surface and Interior Science."
- S. Bhaskaran, "Closed loop terminal guidance navigation for a kinetic impactor spacecraft."
- M. Jutzi, "Numerical study of the asteroid deflection efficiency of the kinetic impactor approach in the NEOShield project."
- K.R. Housen, "Momentum transfer via direct impact: experimental measurements."
- P. Miller, "Overview of collisional-threat mitigation activities at Lawrence Livermore."
- B. Kaplinger, "GPU accelerated 3-D modeling and simulation of a blended kinetic impact and nuclear subsurface explosion."
- B.W. Barbee, "Conceptual design of a flight validation mission for a hypervelocity asteroid intercept vehicle."
- S. Wagner, "Target selection and mission design tradeoffs for a HAIV (Hypervelocity Asteroid Intercept Vehicle) flight validation mission."
- A.F. Cheng, "AIDA: Asteroid Impact & Deflection Assessment."
- J. Gil-Fernández, "BEAST: low-cost demonstration mission for binary asteroid orbit modification."
- P.A. Abell, "Human expeditions to Near-Earth Asteroids: implications for exploration, resource utilization, science, and planetary defence."
- B.W. Barbee, "The Near-Earth Object human space flight accessible targets study: an ongoing effort to identify Near-Earth Asteroid destinations for human explorers."
- D.D. Mazanek, "Asteroid retrieval mission concept – trailblazing our future in space and helping to protect us from Earth impactors."
- R.G. Mink, "OSIRIS-REx mission design to return a sample from asteroid 1999 RQ36."
- M. Beckman, "Trajectory and mission design for the Origins Spectral Interpretation Resource Identification Security Regolith Explorer (OSIRIS-REx) asteroid sample return mission."
- A.M. Barucci, "MarcoPolo-R: ESA sample return mission to 2008 EV5 (a Potentially Hazardous Asteroid)."
April 17
- J. Bellerose, "Performance and derived requirements of a Gravity Tractor serving as a precursor to a kinetic impactor within the NEOShield study framework."
- G. Vardaxis, "Development of an asteroid mission design software tool for planetary defense."
- J.-Y. Prado, "APOPHIS Express, a unique opportunity for a human visit to a NEO in 2029."
- M. Vasile, "Light-Touch2: a laser-based solution for the deflection, manipulation and exploitation of small asteroids."
- M. Hawkins, "Preliminary development and validation of optical navigation and guidance laws for intercepting a small target asteroid."
- J.V. Wasem, "Uncertainty quantification in impulsive deflection scenarios."
- K.M. Howley, "Lower limits on NEO deflection velocities from vapor and blow-off momentum."
- Y. Sugimoto, "Hazardous Near-Earth Asteroid mitigation campaign planning based on uncertain information on fundamental asteroid characteristics."
- C.M. Roithmayr, "Catching a rolling stone: dynamics and control of a spacecraft and an asteroid."
- T. Winkler, "Optical navigation and fuel-efficient orbit control around an irregular-shaped asteroid."
April 18
Session 5: Impact effects that inform warning, mitigation, & costs
- M.-A. Courty, "Aerial and surface effects of cosmic airbursts: recent events and geological archives."
- C. Needham, "High velocity impact generated air blast."
- D.A. Kring, "The NEA impact that created Meteor Crater, Arizona."
- M.B.E. Boslough, "Tsunami from plume-forming collisional airbursts."
- G. Gisler, "Atmospheric and water-surface effects of small impacts."
- V.V. Svetsov, "Assessment of threat of small impacts."
- H.J. Melosh, "Calculating damage from asteroid impacts."
- R. Hueso or A. Sánchez-Lavega, "Flux of impacts in Jupiter: from super bolides to large-scale meteorites."
- A.W. Harris (USA), "The value of enhanced NEO surveys."
- B. Jennings, "Infrastructure consequence analysis of destructive events."
- C.R. Chapman, "NEO disaster response and recovery in the context of other natural hazards."
Session 6: Consequence management & education
- L. David, "A communications plan for an international response to a threatening NEO."
- J. Arnould, "How scientists and prophets have to collaborate to face a NEO threat."
- M.S. Race, "Assessing the full spectrum of communication needs for Potentially Hazardous NEOs."
- L. Billings, "Do’s and don’ts of communicating effectively about NEO hazards."
- R. Lee, "A decision analysis approach for risk management of Near Earth Objects."
- E. Garbolino, "Organizational vulnerability of a crisis organization in the context of an asteroid impact: methodology and tools to identify its weak points and promote its resilience."
- L.P. Kestay, "Possible roles for the U.S. Geological Survey in impact hazard analysis and response."
- E. Malitikov, "IGMASS – planetary market of knowledge without linguistic, national or cultural borders."
Session 7: Introduction to mitigation exercise
Session 8: Mitigation response and disaster management exercise
Session 9: Panel session & discussion
- W.H. Ailor, "Summary from session chairs & discussion."

2013, Apr 17

J. Borovička, J. Tóth, A. Igaz, 2013, Meteorics & Planetary Science, Online Early, "The Košice meteorite fall: atmospheric trajectory, fragmentation, and orbit." See: <adsabs.harvard.edu/doi/10.1111/maps.12078>.

2013, Apr 18

Asteroid 2013 HT25 (H = 28.8 mag, D ≈ 6 m), passed Earth at a nominal miss distance of 0.140 LD. Minimum miss distance 0.139 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2013+HT25+&orb=1>.

2013, Apr 22

J. Foust, 2013, thespacereview.com, 22 April 2013, "To catch a planetoid." See: <www.thespacereview.com/article/2283/1>.

2013, Apr 26

M.S. Tiscareno, C.J. Mitchell, C.D. Murray, et al., 2013, Science, 340, 460, "Observations of ejecta clouds produced by impacts onto Saturn’s rings." See: <www.sciencemag.org/content/340/6131/460.abstract?sid=6a5191ab-f0c8-4943-92f1-8de5969cdcce>.
See also: <saturn.jpl.nasa.gov/news/newsreleases/newsrelease20130425/>.

2013, Apr 29

A.E. Zlobin, 2013, e-print arXiv:1304.8070, "Discovery of probably Tunguska meteorites at the bottom of Khushmo river's shoal." See: <arxiv.org/abs/1304.8070>.
See also: <b612foundation.org/tunguska-meteorite-fragments-found/>.

2013, Apr 30

G.J. Taylor, 2013, Planetary Science Research Discoveries, 30 April 2013, "Meteoritic minerals tell a story of multistage cooling, break-up, and reassembly of an asteroid." See: <adsabs.harvard.edu/abs/2013psrd.reptE.170T>.

2013, May

S.R. Chesley, D. Farnocchia, D. Cotto-Figueroa, T.S., 2013, American Astronomical Society, DDA meeting #44, #102.01, "The obliquity distribution of Near-Earth Asteroids." See: <adsabs.harvard.edu/abs/2013DDA....4410201C>.

2013, May

D. Farnocchia, S.R. Chesley, P.W. Chodas, et al., 2013, Icarus, 224, 192, "Yarkovsky-driven impact risk analysis for asteroid (99942) Apophis." See: <adsabs.harvard.edu/abs/2013Icar..224..192F>.
See also: <http://www.jpl.nasa.gov/news/news.php?release=2013-017>, <neo.jpl.nasa.gov/news/news178.html>.

2013, May

D. Farnocchia, S.R. Chesley, D. Vokrouhlický, et al., 2013, Icarus, 224, 1, "Near Earth Asteroids with measurable Yarkovsky effect." See: <adsabs.harvard.edu/abs/2013Icar..224....1F>.

2013, May

D. Jewitt, 2013, Astronomical Journal, 145, 133, "Properties of near-Sun asteroids." See: <adsabs.harvard.edu/abs/2013AJ....145..133J>.

2013, May

N.A. Moskovitz, S. Abe, K.-S. Pan, et al., 2013, Icarus, 224, 24, "Rotational characterization of Hayabusa II target asteroid (162173) 1999 JU3." See: <adsabs.harvard.edu/abs/2013Icar..224...24M>.

2013, May

R.W.K. Potter, G.S. Collins, 2013, Meteoritics & Planetary Science, 48, 744, "Numerical modeling of asteroid survivability and possible scenarios for the Morokweng crater-forming impact." See: <adsabs.harvard.edu/abs/2013M%26PS...48..744P>.

2013, May

K.A. van der Hucht, 2013, Zenit, May 2013, "Doelwit aarde! Nabije planetoïden – een reëel en acuut gevaar." See: <www.dekoepel.nl/zenit/>.

2013, May 1

P. Haenecour, X. Zhao, C. Floss, et al., 2013, Astrophysical Journal (Letters), 768, L17, "First laboratory observation of silica grains from core collapse supernovae." See: <iopscience.iop.org/2041-8205/768/1/L17>.
See also: <www.space.com/20797-meteorite-supernova-solar-system.html>.

2013, May 7-8

Workshop "Impact effects and mitigation measures" to develop a roadmap for future work within ESA's SSA-NEO programme, Tres Cantos (Spain). This workshop is held as part of ESA's SSA-NEO work. See: <neo.ssa.esa.int>, <ssasnvii.deimos-space.com>, <www.earthweek.com/2013/ew130510/ew130510e.html>.

2013, May 10

R.A. Kerr, 2013, Science, 340, 6133, "Planetary scientists casting doubt on feasibility of plan to corral asteroid." See: <adsabs.harvard.edu/abs/2013Sci...340..668K>.

2013, May 21

J.M. Madiedo, J.P. Trigo-Rodriguez, I.P. Williams, et al., 2013, Monthly Notices of the Royal Astronomical Society, 431, 2464, "The Northern χ-Orionid meteoroid stream and possible association with the Potentially Hazardous Asteroid 2008 XM1." See: <adsabs.harvard.edu/abs/2013MNRAS.431.2464M>.

2013, May 22

Inauguration of the NEO Data Centre of ESA's Space Situational Awareness programme, ESRIN, Frascati (Italy). See: <neo.ssa.esa.int>, <www.esa.int/ssa_neo>. See also: <www.space.com/21263-asteroid-hunting-center-europe.html>, <www.redorbit.com/news/space/1112855062/asteroid-watch-esa-opens-neo-coordination-center-052313/>, <www.neoshield.net/en/news-and-events/news/neo-cc-inauguration-summary.htm>.

2013, May 26

E. Asphaug, 2013, Nature Geoscience, News and Views, 6, 422, "Planetary science: go and catch a falling star." See: <adsabs.harvard.edu/abs/2013NatGe...6..422A>.

2013, May 26

Z. Yue, B.C. Johnson, D.A. Minton, et al., 2013, Nature Geoscience, Letter, 6, 435, "Projectile remnants in central peaks of lunar impact craters." See: <www.nature.com/ngeo/journal/v6/n6/full/ngeo1828.html>.
See also: <www.space.com/21306-moon-craters-asteroid-impacts.html>.

2013, May 29-31

International Primitive Exploration Working Group (IPEWG) 2013, Nice (France), 29-31 May 2013. See: <www.oca.eu/michel/IPEWG2013/>, <www.oca.eu/michel/IPEWG2013/IPEWG2013_Program/IPEWG2013_Program.html>
See also: <www.lpi.usra.edu/sbag/meetings/jan2013/presentations/sbag8_presentations/>.

2013, May 31

Binary Asteroid 285263 (1998 QE2, H = 16.6 mag, D ≈ 3+0.75 km, PHA) passed Earth at a nominal miss distance of 15.2 LD. Minimum miss distance 15.2 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=1998+QE2+&orb=1>.
See also: <www.jpl.nasa.gov/news/news.php?release=2013-163&cid=release_2013-163>, <www.space.com/21189-huge-asteroid-earth-flyby-1998qe2.html>, <www.jpl.nasa.gov/news/news.php?release=2013-182>, <www.space.com/21394-asteroid-1998qe2-earth-flyby.html>, <www.jpl.nasa.gov/news/news.php?release=2013-193>, <www.space.com/21479-new-asteroid-1998-qe2-radar-images-shows-more-moon-video.html>, <www.space.com/21578-asteroid-1998qe2-flyby-radar-image.html>.

2013, Jun

J. Li, D. Jewitt, 2013, Astronomical Journal, 145, 9, "Recurrent perihelion activity in (3200) Phaethon." See: <adsabs.harvard.edu/abs/2013AJ....145..154L>.

2013, Jun

P. Michel, D.C. Richardson, 2013, Astronomy & Astrophysics, 554, L1, "Collision and gravitational reaccumulation: possible formation mechanism of the asteroid Itokawa." See: <adsabs.harvard.edu/abs/2013A%26A...554L...1M>.

2013, Jun

Ye.S. Sybiryakova, Ye.S.Kozyryev, A.V. Shulga, 2013, Bulletin of the Crimean Astrophysical Observatory, 109, 6, "The results of positional observations of near earth asteroids using the combined observation method." See: <adsabs.harvard.edu/abs/2013BCrAO.109...66S>.

2013, Jun

M. Todd, D.M. Coward, P. Tanga, W. Thuillot, 2013, Publications of the Astronomical Society of Australia, 30, 14, "Australian participation in the Gaia follow-up network for Solar System objects." See: <adsabs.harvard.edu/abs/2013PASA...30...14T>.

2013, Jun 1

L.-S. Li, 2013, Monthly Notices of the Royal Astronomical Society, 431, 2971, "Secular influence of the evolution of orbits of Near-Earth Asteroids induced by temporary variation of G and solar mass-loss." See: <adsabs.harvard.edu/abs/2013MNRAS.431.2971L>.

2013, Jun 2

T. Grav, A.K.Mainzer, J.M. Bauer, et al., 2013, presented at the American Astronomical Society Meeting #222, Indianapolis (IN, USA), 2-6 June 2013, #402.0, "The WISE survey of the Near-Earth Asteroids (NEOWISE)." See: <adsabs.harvard.edu/abs/2013AAS...22240201G>.

2013, Jun 3-4

Workshop "The science of MarcoPolo-R, Europe's asteroid sample return mission study", ESTEC, Noordwijk (Netherlands). See: <www.sciops.esa.int/The_science_of_MarcoPolo-R>.

2013, Jun 4

J.H. Wittke, J.C. Weaver, T.E. Bunch, et al., 2013, Proceedings of the National Academy of Sciences of the United States of America, 110 (23), E2088, "Evidence for deposition of 10 million tonnes of impact spherules across four continents 12,800 y ago."  See: <www.pnas.org/content/110/23/E2088.full.pdf+html?sid=aaa1f113-bd1c-44fa-8d8b-8a2fd5ab33e8>.
See also: <www.ia.ucsb.edu/pa/display.aspx?pkey=3019>.

2013, Jun 8

Asteroid 2013 LR6 (H = 27.8 mag, D ≈ 10 m) passed Earth at a nominal miss distance of 0.3 LD. Minimum miss distance 0.3 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2013+LR6+&orb=1>.
See also: <www.jpl.nasa.gov/news/news.php?release=2013-195>, <www.space.com/21477-garbage-truck-sized-asteroid-to-give-earth-close-buzz-video.html>.

2013, Jun 11

I.A. Crawford, 2013, in: V. Badescu (ed.), Asteroids: Prospective Energy and Material Resources (Springer, in press), e-print arXiv:1306.2678, "Asteroids in the service of humanity." See: <adsabs.harvard.edu/abs/2013arXiv1306.2678C>.<www.springer.com/engineering/electronics/book/978-3-642-39243-6>.
See also: <www.whitehouse.gov/blog/2013/06/25/target-asteroids-citizen-science-tracking-near-earth-asteroids-science-and-humanity>.

2013, Jun 12-21

UN - Committee on the Peaceful Uses of Outer Space (UN-COPUOS, 56th session) and will meet in Vienna (Austria). WG NEO and Action Team 14 on NEOs will meet, chaired by Sergio Camacho (Mexico). See: <www.oosa.unvienna.org/oosa/en/COPUOS/index.html>.
Agenda:

<www.oosa.unvienna.org/pdf/limited/l/AC105_L286_advance-edited-versionE.pdf>.

2013, Jun 12

M. Green, J. Hess, T. Lacroix, et al., 2013, Techbriefs Create the Future,  11 June 2013, "Near Earth Asteroids: the celestial chariots." See: <adsabs.harvard.edu/abs/2013arXiv1306.3118G>, <contest.techbriefs.com/2013/entries/aerospace-and-defense/3431>

2013, Jun 14

A.E. Saal, E.H. Hauri, J.A. Van Orman, et al., 2013, Science, 340, 1317, "Hydrogen isotopes in lunar volcanic glasses and melt inclusions reveal a carbonaceous chondrite heritage." See: <www.sciencemag.org/content/340/6138/1317>.
See also: <www.space.com/21047-earth-moon-water-meteorites.html>.

2013, Jun 18

Grand Challenge. NASA announced a Grand Challenge focused on finding all asteroid threats to human populations and knowing what to do about them. The challenge, which was announced at an asteroid initiative industry and partner day at NASA Headquarters in Washington, is a large-scale effort that will use multi-disciplinary collaborations and a variety of partnerships with other government agencies, international partners, industry, academia, and citizen scientists. It complements NASA's recently announced mission to redirect an asteroid and send humans to study it. See: <www.nasa.gov/mission_pages/asteroids/initiative/index.html>, <www.nasa.gov/asteroidinitiative>.
See also: <www.space.com/21610-nasa-asteroid-threat-grand-challenge.html>, <www.youtube.com/watch?v=f5rsJwsyni4>, <go.nasa.gov/12tf23l>, <go.nasa.gov/19A67iI>.

2013, Jun 18

10,000-st Near Earth Object registered by the Minor Planet Center: asteroid 2013 MZ5 (H = 20.4 mag, D ≈ 300 m), when it passed Earth at a nominal distance of 180 LD. 
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2013+LR6+&orb=1>.
The NASA site Near Earth Object Program / Discovery Statistics lists 10,003 NEOs: 94 Near Earth Comets and 9909 Near Earth Asteroids. The search continues. See: <neo.jpl.nasa.gov/stats/>, <www.jpl.nasa.gov/news/news.php?release=2013-207>.
See also: <www.space.com/21735-asteroid-telescope-finds-10000-space-rock.html>.

2013, Jun 21

C. de la Fuente Marcos, R. de la Fuente Marcos, 2013, Monthly Notices of the Royal Astronomical Society, 432, 886, "Asteroid 2012 XE133, a transient companion to Venus." See: <adsabs.harvard.edu/abs/2013MNRAS.432..886D>.

2013, Jun 21

T. Henych, P. Pravec, 2013, Monthly Notices of the Royal Astronomical Society, 432, 1623, "Asteroid rotation excitation by subcatastrophic impacts." See: <mnras.oxfordjournals.org/content/432/2/1623.abstract>.

2013, Jun 25

D.F. Lupishko, I.N. Tielieusova, 2013, Meteoritics & Planetary Science, Online Early, "Influence of the YORP effect on rotation rates of near-Earth asteroids." See: <adsabs.harvard.edu/doi/10.1111/maps.12149>.

2013, Jul

I.J. Daubar, A.S. McEwen, S. Byrne, et al., 2013, Icarus, 225, 506, "The current Martian cratering rate." See: <www.sciencedirect.com/science/article/pii/S0019103513001693>.
See also: <www.space.com/21198-mars-asteroid-strikes-common.html>.

2013, Jul

J. de Leon, J.L. Ortiz, N. Pinilla-Alonso, et al., 2013, Astronomy & Astrophysics, 555, L2, "Visible and near-infrared observations of asteroid 2012 DA14 during its closest approach of February 15th, 2013." See: <adsabs.harvard.edu/abs/2013A%26A...555L...2D>.

2013, Jul

D.W. Dunham, H.J. Reitsema, E. Lu, et al., Solar System Research, 47, 315, "A concept for providing warning of Earth impacts by small asteroids". See: <adsabs.harvard.edu/abs/2013SoSyR..47..315D>.

2013, Jul

N.A. Eismont, M.N. Boyarskii, A.A. Ledkov, et al., 2013, Solar System Research, 47, 325, "On the possibility of the guidance of small asteroids to dangerous celestial bodies using the gravity-assist maneuver." See: <adsabs.harvard.edu/abs/2013SoSyR..47..325E>.

2013, Jul

V.V. Emel’yanenko, O.P. Popova, N.N. Chugai, 2013, Solar System Research, 47, 240, "Astronomical and physical aspects of the Chelyabinsk event (February 15, 2013)." See: <adsabs.harvard.edu/abs/2013SoSyR..47..240E>.

2013, Jul

J. Foriel, F. Moynier, T. Schulz, C. Koeberl, 2013, Meteoritics & Planetary Science, 48, 1339, "Chromium isotope anomaly in an impactite sample from the El'gygytgyn structure, Russia: evidence for a ureilite projectile?" See: <onlinelibrary.wiley.com/doi/10.1111/maps.12116/abstract>.

2013, Jul

V.V. Ivashkin, I.V. Krylov, A. Lan, 2013, Solar System Research, 47, 334, "Optimum trajectories for spacecraft mission to asteroid Apophis with a return to the Earth". See <adsabs.harvard.edu/abs/2013SoSyR..47..334I>.

2013, Jul

D. Perna, E. Dotto, M. Barucci, et al., 2013, Astronomy & Astrophysics, 555, 62, "Ultraviolet to near-infrared spectroscopy of the potentially hazardous, low delta-v asteroid (175706) 1996 FG3. Backup target of the sample return mission MarcoPolo-R." See: <adsabs.harvard.edu/abs/2013A%26A...555A..62P>.

2013, Jul

S.R. Robbins, B.M. Hynek, R.J. Lillis, W.F. Bottke, 2013, Icarus, 225, 173, "Large impact crater histories of Mars: the effect of different model crater age techniques." See: <www.sciencedirect.com/science/article/pii/S0019103513001358>.

2013, Jul

B. Rozitis, S.R. Duddy, S.F. Green, St.C. Lowry, 2013, Astronomy & Astrophysics, 555, 20, "A thermophysical analysis of the (1862) Apollo Yarkovsky and YORP effects." See: <adsabs.harvard.edu/abs/2013A%26A...555A..20R>.

2013, Jul

J.A. Sanchez, R. Michelsen, V. Reddy, A. Nathues, 2013, Icarus, 225, 131, "Surface composition and taxonomic classification of a group of near-Earth and Mars-crossing asteroids." See: <adsabs.harvard.edu/abs/2013Icar..225..131S>.

2013, Jul

B.M. Shustov, S.A. Naroenkov, V.V. Emel’yanenko, A.S. Shugarov, 2013, Solar System Research, 47, 288, "Astronomical aspects of building a system for detecting and monitoring hazardous space objects." See: <adsabs.harvard.edu/abs/2013SoSyR..47..288S>.

2013, Jul

V.V. Shuvalov, V.V. Svettsov, I.A. Trubetskaya, 2013, Solar System Research, 47, 260, "An estimate for the size of the area of damage on the Earth's surface after impacts of 10-300m asteroids." See: <adsabs.harvard.edu/abs/2013SoSyR..47..260S>.

2013, Jul

T.S. Statler, D. Cotto-Figueroa, D.A. Riethmiller, K.M. Sweeney, 2013, Icarus, 225, 141, "Size matters: the rotation rates of small near-Earth asteroids." See: <adsabs.harvard.edu/abs/2013Icar..225..141S>.

2013, Jul

R.J. Weryk, M.D. Campbell-Brown, P.A. Wiegert, et al., 2013, Icarus, 225, 614, "The Canadian Automated Meteor Observatory (CAMO): system overview." See: <www.sciencedirect.com/science/article/pii/S0019103513001905>.

2013, Jul 1

C. de la Fuente Marcos, R. de la Fuente Marcos, 2013, Monthly Notices of the Royal Astronomical Society, 434, L1, "A resonant family of dynamically cold small bodies in the near-Earth asteroid belt." See: <adsabs.harvard.edu/abs/2013MNRAS.434L...1D>.

2013, Jul 9

Target NEO 2: Open Community Workshop, Washington DC (USA), 9 July 2013. See: <targetneo.jhuapl.edu>, <targetneo.jhuapl.edu/pdfs/agenda.pdf>.
See also: <www.whitehouse.gov/blog/2013/06/25/target-asteroids-citizen-science-tracking-near-earth-asteroids-science-and-humanity>.
Presentations:
- R. Dissly, C. Reed, 2013, "Workshop summary and next steps." See: <targetneo.jhuapl.edu/pdfs/2013_Presentations/Summary%20for%20SBAG%2010July2010.pdf>.
- W.H. Gerstenmaier, 2013, "Asteroid redirect mission and human exploration." See: <targetneo.jhuapl.edu/pdfs/2013_Presentations/session1/Session1_Gerst_Presentation.pdf>.
- A. Harris, 2013, "The estimated population of small NEOs." See: <targetneo.jhuapl.edu/pdfs/2013_Presentations/session2/Session2_Harris_Presentation.ppt>.
- A. Harris, 2013, "The Population of Near-Earth Asteroids and current survey completion." See: <targetneo.jhuapl.edu/pdfs/2013_Presentations/session2/Session2_Harris_Background.pdf>.
- A. Rivkin, 2013, "Physical properties of decameter-scale asteroids." See: <targetneo.jhuapl.edu/pdfs/2013_Presentations/session2/Rivkin_presentation_final.pptx >.
- D.J. Scheeres, P. Sánchez, 2013, "Can small, fast spinning asteroids be rubble piles?" See: <targetneo.jhuapl.edu/pdfs/2013_Presentations/session2/small_strength_reduced.ppt>.
- W. Bottke, 2013, "Understanding the population of ARM candidates." See: <targetneo.jhuapl.edu/pdfs/2013_Presentations/session2/Session2_Bottke_Presentation.ppt>.
- P. Chodas, 2013, "Estimated ARM candidate target population and projected discovery rate of ARM candidates." See: <targetneo.jhuapl.edu/pdfs/2013_Presentations/session2/Session2_Chodas_Presentation.pptx>.
- T. Spahr, 2013, "Tutorial on process of finding small NEAs." See: <targetneo.jhuapl.edu/pdfs/2013_Presentations/session3/session_3_spahr.ppt>.
- L. Benner, 2013, "NEA follow-up characterization needs and issues: radar and optical." See: <targetneo.jhuapl.edu/pdfs/2013_Presentations/session3/Session3_benner.ppt>.
- S. Larson, E. Christensen, 2013, "Existing and near-term ground‐based capabilities and gaps." See: <targetneo.jhuapl.edu/pdfs/2013_Presentations/session3/Session3_Larson.pdf>.
- E. Schunova, R. Jedicke, 2013, "Discovery process for finding ARM candidate targets using PanStarrs2 and new Atlas telescopes." See: <targetneo.jhuapl.edu/pdfs/2013_Presentations/session3/Session3Schunova.pptx>.
- A. Mainzer, 2013, "Existing and near‐term space‐based capabilities and gaps." See: <targetneo.jhuapl.edu/pdfs/2013_Presentations/session3/Session3_Mainzer_PresentationPDF.pdf>.

2013, Jul 10

D. Jewitt, J. Li, J. Agarwal, 2013, Astrophysical Journal (Letters), 771, L36, "The dust tail of asteroid (3200) Phaethon." See: <adsabs.harvard.edu/abs/2013ApJ...771L..36J>.

2013, Jul 10-11

9th NASA Small Bodies Assessment Group Meeting, 10-11 July 2013, Pasadena (CA, USA). See: <www.lpi.usra.edu/sbag/>, <icpi.nasaprs.com/sbag9>.
Presentations:
- P.A. Abell, 2013, "Human exploration and the role of NEOs: a NASA perspective." See: <www.lpi.usra.edu/sbag/meetings/jan2013/presentations/sbag8_presentations/MON_0915_Abell_NASA_NEO.pdf>.
- I. Carnelli, A. Gàluez, 2013, "Asteroid Impact Mission (AIM).
ESA’s NEO exploration precursor." See: <www.lpi.usra.edu/sbag/meetings/jan2013/presentations/sbag8_presentations/MON_1000_SBAG_ESA_NEO_explo%20studies_final.pdf>.
- S. Ulamec, 2013, "Exploration of small bodies –
activities at DLR." See: <www.lpi.usra.edu/sbag/meetings/jan2013/presentations/sbag8_presentations/MON_0930_Ulamec.pdf>.
- J. Kawaguchi, 2013, "The future of human exploration and the role of NEOs." See: <www.lpi.usra.edu/sbag/meetings/jan2013/presentations/sbag8_presentations/MON_0945_JAXA_Strategy.pdf>.
- V. Hipkin, D. Laurin, 2013, "Canadian Space Agency perspective." See: <www.lpi.usra.edu/sbag/meetings/jan2013/presentations/sbag8_presentations/MON_1015_CSA_perspective.pdf>.
- P. Michel, 2013, "IPEWG 2013, Nice (France), 29-31 May 2013." See: <www.lpi.usra.edu/sbag/meetings/jan2013/presentations/sbag8_presentations/MON_1130_Michel_IPEWG2013Status.pdf>.
- J. Kawaguchi, 2013, "Outline of the next asteroid sample return mission - Hayabusa 2." See: <www.lpi.usra.edu/sbag/meetings/jan2013/presentations/sbag8_presentations/TUES_0900_Hayabusa-2.pdf>.
- Chunlai Li, Han Li, 2013, "Chang'e 2 flyby of Toutatis." See: <www.lpi.usra.edu/sbag/meetings/jan2013/presentations/sbag8_presentations/TUES_0930_CE_Toutatis.pdf>.
- M. Busch, et al., 2013, "Toutatis - 2012 radar observations." See: <www.lpi.usra.edu/sbag/meetings/jan2013/presentations/sbag8_presentations/TUES_1015_Busch_Toutatis_SBAG.pdf>.
- S. Milam, H. Hammel, 2013, "Planning small body observations with the JWST." See: <www.lpi.usra.edu/sbag/meetings/jan2013/presentations/sbag8_presentations/TUES_1115_JWST_Milam.pdf>.
- M. Nolan, 2013, "Status of Arecibo observations of NEOs." See: <www.lpi.usra.edu/sbag/meetings/jan2013/presentations/sbag8_presentations/TUES_1130_AreciboNolan.pdf>.
- S.R. Chesley, 2013, "ISIS - Impactor for Surface and Interior Science." See: <www.lpi.usra.edu/sbag/meetings/jan2013/presentations/sbag8_presentations/TUES_1145_Chesley_ISIS%20Overview%20SBAG-v1.pdf>.
- L. Johnson, 2013, "Near Earth Objects - The NEO Observation Program and planetary defense." See: <www.lpi.usra.edu/sbag/meetings/jan2013/presentations/sbag8_presentations/WED_0915_NEO_Update_Planetary_Defense.pdf>.

2013, Jul 9 - Aug 2

76th Annual Meeting of the Meteoritical Society, Edmonton (Alberta, Canada), 9 July - 2 August 2013. See: <metsoc2013edmonton.org/>, <www.hou.usra.edu/meetings/metsoc2013/pdf/program.pdf>

2013, Jul 16

S. R. Proud, 2013, Geophysical Research Letters, 40, 3351, "Reconstructing the orbit of the Chelyabinsk meteor using satellite observations." See: <adsabs.harvard.edu/abs/2013GeoRL..40.3351P>.

2013, Jul 16

A. Witze, 2013, Nature, 449, 261, "Asteroid plan looks rocky." See: <adsabs.harvard.edu/abs/2013Natur.499..261W>.

2013, Jul 21

B. Rozitis, S.F. Green, 2013, Monthly Notices of the Royal Astronomical Society, 433, 603, "The influence of global self-heating on the Yarkovsky and YORP effects." See: <adsabs.harvard.edu/abs/2013MNRAS.433..603R>.

2013, Jul 25

D. E. Moser, K. R. Chamberlain, K. T. Tait, et al., 2013, Nature, 499, 454, "Solving the Martian meteorite age conundrum using micro-baddeleyite and launch-generated zircon." See: <www.nature.com/nature/journal/v499/n7459/full/nature12341.html>. See also: <www.space.com/22099-mars-meteorites-age-mystery.html>.

2013, Jul 28

A. Le Pichon, L. Ceranna, C. Pilger, et al., 2013, Geophysical Research Letters, 40, 3732, "The 2013 Russian fireball largest ever detected by CTBTO infrasound sensors." See: <adsabs.harvard.edu/abs/2013GeoRL..40.3732L>.

2013, Jul 29

T. G. Mueller, T. Miyata, C. Kiss, M. A. Gurwell, et al., 2013, Astronomy & Astrophysics, in press, e-print arXiv:1307.7517, "Physical properties of asteroid (308635) 2005 YU55 derived from multi-instrument infrared observations during a very close Earth-approach." See: <adsabs.harvard.edu/abs/2013arXiv1307.7517M>.

2013, Aug

P.B. Babadzhanov, I.P. Williams, G.I. Kokhirova, 2013, Astronomy & Astrophysics, 556, 25, "Near-Earth asteroids among the Scorpiids meteoroid complex." See: <adsabs.harvard.edu/abs/2013A%26A...556A..25B>.

2013, Aug

H. Campins, J. de León, A. Morbidelli, et al., 2013, Astronomical Journal, 146, 26, "The origin of asteroid 162173 (1999 JU3)." See: <adsabs.harvard.edu/abs/2013AJ....146...26C>.

2013, Aug

J. de León, V. Lorenzi, V. Alí-Lagoa, et al., 2013, Astronomy & Astrophysics, 556, 33, "Additional spectra of asteroid 1996 FG3, backup target of the ESA MarcoPolo-R mission." See: <adsabs.harvard.edu/abs/2013A%26A...556A..33D>.

2013, Aug

D. García Yárnoz, J. P. Sanchez, C. R. McInnes, 2013, Celestial Mechanics and Dynamical Astronomy, 116, 367, "Easily retrievable objects among the NEO population." See: <adsabs.harvard.edu/abs/2013CeMDA.116..367G>.
See also: <www.news.com.au/technology/sci-tech/astronomers-have-identified-12-nearearth-asteroids-that-can-be-captured-for-mining/story-fn5fsgyc-1226696729243>.

2013, Aug 1

O. Vaduvescu, M. Popescu, I. Comsa, et al., 2013, Astronomische Nachrichten,334, Issue 7, "Mining the ESO WFI and INT WFC archives for known Near Earth Asteroids. Mega-Precovery software." See: <onlinelibrary.wiley.com/doi/10.1002/asna.201211720/pdf>.

2013, Aug 4

Asteroid 2013 PJ10 (H = 24.6 mag, D ≈ 40 m), passed Earth at a nominal miss distance of 1.0 LD. Minimum miss distance 1.0 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2013+PJ10+&orb=1>.

2013, Aug 9

A. Tsuchiyama, M. Uesugi, K. Uesugi, et al., 2013, Meteoritics & Planetary Science, Online Early, "Three-dimensional microstructure of samples recovered from asteroid 25143 Itokawa: comparison with LL5 and LL6 chondrite particles." See: <adsabs.harvard.edu/doi/10.1111/maps.12177>.

2013, Aug 9, 05:02

Asteroid 277475 (2005 WK4,H = 20.1 mag, D ≈ 250 m, PHA), passed Earth at a nominal miss distance of 8.1 LD. Minimum miss distance 8.1 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2005+WK4+&orb=1>.
See also: <www.jpl.nasa.gov/news/news.php?release=2013-254>.

2013, Aug 9, 05:21

Asteroid 2013 PS13 (H = 27.2 mag, D ≈ 15 m), passed Earth at a nominal miss distance of 0.5 LD. Minimum miss distance 0.5 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2013+PS13+&orb=1>.
See also: 11 February 2082.

2013, Aug 10

10,000-st Near Earth Asteroid registered by the Minor Planet Center. The search continues. See: <neo.jpl.nasa.gov/stats/>.

2013, Aug 12

Orbits of Potentially Hazardous Asteroids, Astronomy Picture of the Day, 12 August 2013. See: <http://apod.nasa.gov/apod/ap130812.html>.

2013, Aug 14-16

4th Planetary Crater Consortium Meeting, US Geological Survey, Flagstaff (AZ, USA), 14-16 August 2013. See: <www.planetarycraterconsortium.nau.edu/>, <www.planetarycraterconsortium.nau.edu/PCC4Abstracts.htm>.

2013, Aug 21

G. Collins, 2013, The New York Times, 21 August 2013, "Rocks in space." See: <www.nytimes.com/2013/08/22/opinion/collins-rocks-in-space.html?ref=gailcollins&_r=1&>.

2013, Aug 22-25

International Meteor Conference 2013, Poznan (Poland) 22-25 August 2013. See: <www.imo.net/imc2012/>.

2013, Aug 25

S. Urakawa, M. Fujii, H. Hanayama, et al., 2013, Publications of the Astronomical Society of Japan, 65, L9, "Visible spectroscopic observations of Near-Earth Object 2012 DA14." See: <adsabs.harvard.edu/abs/2013PASJ...65L...9U>.

2013, Aug 25

Asteroid 2013 QP48 (H = 27.8 mag, D ≈ 10 m), passed Earth at a nominal miss distance of 1.1 LD. Minimum miss distance 1.0 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2013+QP48+&orb=1>.

2013, Aug 30

C. de la Fuente Marcos, R. de la Fuente Marcos, 2013, Monthly Notices Royal Astronomical Society, Letters, Advanced Access, "The Chelyabinsk superbolide: a fragment of asteroid 2011 EO40?" See: <adsabs.harvard.edu/doi/10.1093/mnrasl/slt103>.

2013, Aug-Sep

S. Tardivel, P. Michel, D.J. Scheeres, 2013, Acta Astronautica, 89, 60, "Deployment of a lander on the binary asteroid (175706) 1996 FG3, potential target of the European MarcoPolo-R sample return mission." See: <www.sciencedirect.com/science/article/pii/S0094576513000799>.

2013, Sep

E. Füri, A. Aléon-Toppani, B. Marty, 2013, Earth and Planetary Science Letters, 377, 1, "Effects of atmospheric entry heating on the noble gas and nitrogen content of micrometeorites." See: <adsabs.harvard.edu/abs/2013E%26PSL.377....1F>.

2013, Sep

C.W. McMurtry, D. Lee, J. Beletic, et al., Optical Engineering, 52, 091804, "Development of sensitive long-wave infrared detector arrays for passively cooled space missions." See:
<spiedigitallibrary.org/data/Journals/OPTICE/926426/OE_52_9_091804.pdf>,
See also: <adsabs.harvard.edu/abs/2013AAS...22135004M>, <web.ipac.caltech.edu/staff/sscnews/temp/neocam/NEOCam-detector-JOE.pdf>.
<neocam.ipac.caltech.edu/news/tracking-sensor-passes-test>, <http://marsmobile.jpl.nasa.gov/news/whatsnew/index.cfm?FuseAction=ShowNews&NewsID=1121>.

2013, Sep

L.L. Sokolov, T.P. Borisova, A.A. Vasil'ev, N.A. Petrov, 2013, Solar System Research, 47, 408, "Properties of collision trajectories of asteroids with the Earth." See: <adsabs.harvard.edu/abs/2013SoSyR..47..408S>.

2013, Sep 1

O. Vaduvescu, M. Birlan, A.Tudorica, et al., 2013, Planetary and Space Science, 85, 299, "739 observed NEAs and new 2 - 4 m survey statistics within the EURONEAR network." See: <adsabs.harvard.edu/abs/2013P%26SS...85..299V>.

2013, Sep 3

Asteroid 2013 RG (H = 29.4 mag, D ≈ 5 m), passed Earth at a nominal miss distance of 0.6 LD. Minimum miss distance 0.6 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2013+RG+&orb=1>.

2013, Sep 4

K.B. Stevenson, D. Fabrycky, R. Jedicke, et al., 2013, "NEOKepler: discovering Near-Earth Objects using the Kepler spacecraft." See: <adsabs.harvard.edu/abs/2013arXiv1309.1096S>.

2013, Sep 4

Asteroid 2013 RO30 (H = 28.4 mag, D ≈ 8 m), passed Earth at a nominal miss distance of 0.8 LD. Minimum miss distance 0.8 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2013+RO30+&orb=1>.

2013, Sep 5

Asteroid 2013 RF32 (H = 28.7 mag, D ≈ 8 m), passed Earth at a nominal miss distance of 0.4 LD. Minimum miss distance 0.4 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2013+RF32+&orb=1>.

2013, Sep 9

M. Elvis, J.L. Galache, G.V. Williams, 2013, e-print arXiv:1309.2333, "Alternate science investigations for the Kepler spacecraft: precision rotation periods and shapes of Near-Earth Asteroids." See: <adsabs.harvard.edu/abs/2013arXiv1309.2333E>.

2013, Sep 12

R. Fork, S. Cole, L. Burgess, G. Bergstue, 2013, e-print arXiv:1309.3238, "Mode-locked lasers applied to deflecting a Near Earth Object on collision course with Earth." See: <adsabs.harvard.edu/abs/2013arXiv1309.3238F>.

2013, Sep 12

M. Shao, B. Nemati, C. Zhai, et al., 2013, e-print arXiv:1309.3248, "Finding very small Near-Earth Asteroids using synthetic tracking." See: <adsabs.harvard.edu/abs/2013arXiv1309.3248S>.

2013, Sep 18

Asteroid 2013 RZ53 (H = 31.1 mag, D ≈ 3 m), passed Earth at a nominal miss distance of 0.6 LD. Minimum miss distance 0.6 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2013+RZ53+&orb=1>.
See also: 13 March 1954.
See also: <www.space.com/22818-asteroid-buzzing-earth-this-week-2013-rz53.html>.

2013, Sep 19

F.E. DeMeo, R.P. Binzel, M. Lockhart, 2013, Icarus, in press, e-print arXiv:1309.4839, "Mars encounters cause fresh surfaces on some near-Earth asteroids." See: <adsabs.harvard.edu/abs/2013arXiv1309.4839D>.

2013, Sep 24

T. Kohout, M. Gritsevich, V.I. Grokhovsky, et al., 2013, Icarus, in press, e-print arXiv: 1309.6081, "Mineralogy, reflectance spectra, and physical properties of the Chelyabinsk LL5 chondrite, insight into shock induced changes in asteroid regoliths." See: <adsabs.harvard.edu/abs/2013arXiv1309.6081K>.

2013, Sep 30 - Oct 2

NASA Asteroid Initiative Idea Synthesis Workshop, 30 September - 2 October 2013, Lunar and Planetary Institute, Houston (TX, USA). See: <www.nasa.gov/content/asteroid-initiative-idea-synthesis-workshop/#.UkPg_H-TLpc>.

2013, Sep-Oct

C.W. Hergenrother, M.C. Nolan, R.P. Binzel, et al., 2013 Icarus, 226, 663, "Lightcurve, color and phase function photometry of the OSIRIS-REx target asteroid (101955) Bennu." See: <www.sciencedirect.com/science/article/pii/S0019103513002625>.

2013, Sep-Oct

S.P. Naidu, J.-L. Margot, M.W. Busch, et al., 2013, Icarus, 226, 323, "Radar imaging and physical characterization of Near-Earth Asteroid (162421) 2000 ET70." See: <www.sciencedirect.com/science/article/pii/S001910351300225X>.

2013, Sep-Oct

M.C. Nolan, C. Magri, E.S. Howell, et al., 2013, Icarus, 226, 629, "Shape model and surface properties of the OSIRIS-REx target asteroid (101955) Bennu from radar and lightcurve observations." See: <www.sciencedirect.com/science/article/pii/S0019103513002285>.

2013, 30 Sep - 2 Oct

NASA Asteroid Initiative Idea Synthesis Workshop, 30 September - 2 October 2013, Lunar and Planetary Institute, Houston (TX, USA). See: <www.nasa.gov/content/asteroid-initiative-idea-synthesis-workshop/#.Uhe4IX-TLpc>.

2013, Oct

V. Celebonovic, 2013, Revista Mexicana Astronomy & Astrophysics, accepted, e-print arXiv:1304.6043, "Solid state physics of impact crater formation: further considerations." See: <adsabs.harvard.edu/abs/2013arXiv1304.6043C>.

2013, Oct

Y. Takahashi, M.W. Busch, D.J. Sheeres, 2013, Astronomical Journal, 146, 95, "Spin state and moment of inertia characterization of 4179 Toutatis." See: <adsabs.harvard.edu/abs/2013AJ....146...95T>.

2013, Oct

M. Tibbets, M. Elvis, J.L. Galache, et al., 2013, in: Proc. Astronomical Data Analysis Software and Systems XXII, ASP Conf. Series, 475, 259, "NEOview: Near Earth Object data discovery and query." See: <adsabs.harvard.edu/abs/2013ASPC..475..259T>.

2013, Oct 1

D. Nakashima, N.T. Kita, T. Ushikubo, 2013, Earth and Planetary Science Letters, 379, 127, " Oxygen three-isotope ratios of silicate particles returned from asteroid Itokawa by the Hayabusa spacecraft: a strong link with equilibrated LL chondrites." See: <adsabs.harvard.edu/abs/2013E%26PSL.379..127N>.

2013, Oct 1

I. Wlodarczyk, 2013, Monthly Notices of the Royal Astronomical Society, 434, 3055, "The potentially dangerous asteroid (99942) Apophis." See: <adsabs.harvard.edu/abs/2013MNRAS.434.3055W>.

2013, Oct 6-11

2013 Carl Sagan Medal from the American Astronomical Society will be received by Donald K. Yeomans, during the AAS Division for Planetary Sciences annual meeting, 6 to 11 October 2013 in Denver (CO, USA). See:  <http://www.jpl.nasa.gov/news/news.php?release=2013-220>.

2013, Nov 1

P. Pergola, 2013, Advances in Space Research, 52, 1622, "Small satellite survey mission to the second Earth moon [3753 Cruithne (1986 TO)]." See: <adsabs.harvard.edu/abs/2013AdSpR..52.1622P>.

2013, Nov

Expected launch of ESA spacecraft Gaia to Sun-Earth L2 Lagrangian point for a 5-yr mission. As part of its overall mission, with a limiting magnitude of v ≈ 20 mag, Gaia (two 1.4 x 0.5 m telescopes, optical) is expected to detect ~300,000 of minor planets, many of which will be NEOs, down to a solar elongation of 45°, with unprecedented accuracy.
See: <www.rssd.esa.int/Gaia>,  <www.esa.int/Our_Activities/Space_Science/Gaia/Gaia_overview>, <blogs.esa.int/gaia/>.
Ref:
-  S. Mouret, D. Hestroffer, F. Mignard, 2007, in: A. Milani, G.B. Valsecchi & D. Vokrouhlický (eds.), Proc. IAU Symposium No. 236 on Near Earth Objects, our Celestial Neighbors: Opportunity and Risk, Prague (Czech Republic), 14-18 August 2006 (Cambridge: CUP), p. 435, "Asteroid mass determination with the Gaia mission." See: <adsabs.harvard.edu/abs/2007IAUS..236..435M>;
- S. Mouret, D. Hestroffer, F. Mignard, 2007, Astronomy & Astrophysics, 472, 1017, "Asteroid masses and improvement with Gaia." See: <adsabs.harvard.edu/abs/2007A%26A...472.1017M>;
- F. Mignard, A. Cellino, K. Muinonen, 2007, Earth, Moon, and Planets, 101, 97, "The Gaia mission: expected applications to asteroid science." See: <adsabs.harvard.edu/abs/2007EM%26P..101...97M>;
- J. Douglas, J. de Bruijne, K.  O’Flaherty, T. Prusti, et al., 2007, ESA Bulletin, No. 132, p. 26, "Pinpointing the Milky Way, the formidable challenge of processing Gaia’s data." See: <sci.esa.int/science-e/www/object/index.cfm?fobjectid=41934>;
- M. Delbò, P. Tanga, F. Mignard, 2008, Planetary and Space Science, 56, 1823, "On the detection of the Yarkovsky effect on near-Earth asteroids by means of Gaia." See: <adsabs.harvard.edu/abs/2008P%26SS...56.1823D >;
- D. Bancelin, D. Hestroffer, W. Thuillot, 2010, in: S. Boissier, M. Heydari-Malayeri, R. Samadi & D. Valls-Gabaud (eds.), SF2A-2010: Proc. Annual meeting French Society of Astronomy and Astrophysics, p. 107, "Near-Earth Asteroids astrometry with Gaia and beyond." See: <adsabs.harvard.edu/abs/2010sf2a.conf..107B>;
- D. Hestroffer, S. Mouret, F. Mignard, et al., 2010, in: S.A. Klioner, P.K. Seidelmann & M.H. Soffel (eds.), Relativity in fundamental astronomy: dynamics, reference frames, and data analysis, Proc. IAU Symposium No. 261, Virginia Beach (VA, USA), 27 April - 1 May 2009 (Cambridge: CUP), p. 325, "Gaia and the asteroids: local test of General Relativity." See: <adsabs.harvard.edu/abs/2010IAUS..261..325H>;
- P. Tanga, 2011, in: C. Turon, F. Meynadier & F. Arenou (eds.), Proc. Intern. Conf. Gaia: at the frontiers of astrometry, 7-11 June 2010, Sèvre (France), ESA Publication Series, 45, 225, "Solar System science: Gaia and other forthcoming surveys." See: <adsabs.harvard.edu/abs/2011EAS....45..225T>;
- S. Mouret, F. Mignard, 2011, Monthly Notices of the Royal Astronomical Society, 413, 741, "Detecting the Yarkovsky effect with the Gaia mission: list of the most promising candidates." See: <adsabs.harvard.edu/abs/2011MNRAS.413..741M>.
- D. Bancelin, D. Hestroffer. W. Thuillot, December 2012, Planetary and Space Science, 73, 21, "Dynamics of asteroids and near-Earth objects from Gaia astrometry." See: <adsabs.harvard.edu/abs/2012P%26SS...73...21B>.
See also: <sci.esa.int/science-e/www/area/index.cfm?fareaid=26>, <sci.esa.int/science-e/www/object/index.cfm?fobjectid=48006>,  <www.rssd.esa.int/index.php?project=Gaia>, <www.esa.int/esapub/bulletin/bulletin132/bulletin132.pdf>, <www.esa.int/esapub/bulletin/bulletin132/bulletin132.pdf>, <smsc.cnes.fr/GAIA/>, <www.eas-journal.org/index.php?option=com_article&access=doi&doi=10.1051/eas/1045038&Itemid=129>, <www.esa.int/esaSC/SEMQ9V6TLPG_index_0.html>, <sci.esa.int/science-e/www/object/index.cfm?fobjectid=49071>, <en.wikipedia.org/wiki/Gaia_mission>.

2013, Nov 11-15

1st COSPAR Symposium Planetary systems of our Sun and stars, and the future of space astronomy, Bangkok (Thailand), 11-15 November 2013. Session 5: Small bodies. See: <www.cospar2013.gistda.or.th>.

2014

Cancelled: launch of AsteroidFinder, a space project of the German Aerospace Center (DLR)  with a one-year baseline mission duration, with a 25-cm telescope and a 2°×2° FoV, to operate in a Sun-synchronous low-Earth orbit (IEOs). The primary goals are to estimate the population of NEOs interior to Earth’s orbit down to v = 18.5 mag, their size distribution, and their orbital properties, along with impact hazard assessment.
See: <www.dlr.de/pf/en/desktopdefault.aspx/tabid-174/319_read-18911/>.
Ref:
- M. Hartl, H. Mosebach, J. Schubert, 2010, abstract in: International Conference on Space Optics, Rhodes (Greece), 4-8 October 2010, "AsteroidFinder– the space-borne telescope to search for NEO asteroids."
See also: <www.oosa.unvienna.org/pdf/pres/stsc2008/tech-13.pdf>, <www.lpi.usra.edu/meetings/acm2008/pdf/8140.pdf>, <www.unoosa.org/pdf/reports/ac105/AC105_976E.pdf>.
Note:
The project had successfully completed a Phase-B study in October 2011. Unfortunately, however, due to financial constraints, mainly due to the difficulty of procurement of an affordable launcher for the desired orbit, the project has been terminated shortly after (priv. comm.).

2014, Mar 26

Asteroid 143649 (2003 QQ47, H = 17.2 mag, D ≈ 1.5 km, PHA), will pass Earth at a nominal miss distance of 49.9 LD (= 0.13 AU). Minimum miss distance 49.9 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2003+QQ47&orb=1>, <en.wikipedia.org/wiki/(143649)_2003_QQ47>.
Ref:
-  B.G. Marsden, 2007, in: P. Bobrowsky & H. Rickman (eds.), 2007, Comet/Asteroid Impacts and Human Society (Berlin: Springer), p. 505, "Impact risk communication management (1998 – 2004): has it improved?" See: <adsabs.harvard.edu/abs/2007caih.book.....B>.
See also:  <neo.jpl.nasa.gov/news/news138.html>.

2014, Jun 30 - Jul 4

International conference Asteroids, Comets, Meteors 2014, Helsinki (Finland), 30 June - 4 July 2014. See: <www.helsinki.fi/acm2014/>.

2014, Sep 7-12

77th Annual Meeting of the Meteoritical Society, Casablanca (Morocco), September 2014. See: <meteoriticalsociety.org/?page_id=18>.

2014, Sep 16

Asteroid 2009 RR (H = 25.6 mag, D ≈ 30 m) will pass Earth at a nominal miss distance of 1.0 LD. Minimum miss distance 1.0 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2009+RR+&orb=1>.

2014, Dec

Proposed launch of NEA sample return mission Hayabusa 2. This is a follow-on to the Hayabusa mission, and proposed by the Japanese space agency JAXA. The target is NEA (162173) 1999 JU3. The Hayabusa 2 is expected to arrive at the target in 2018, survey the NEA for 1.5 year, depart in December 2019, and return to Earth in December 2020. For this mission the Germany space agency DLR will build a small lander called MASCOT (Mobile Asteroid Surface Scout) for the mission in cooperation with the French space agency CNES.
See: <www.jspec.jaxa.jp/e/activity/hayabusa2.html>, <blogs.nature.com/news/2012/02/japan%e2%80%99s-second-asteroid-probe-gets-the-green-light.html>, <www.dlr.de/irs/en/desktopdefault.aspx/tabid-7902/13482_read-34316>, <www.dlr.de/dlr/en/desktopdefault.aspx/tabid-10081/151_read-5375/year-all/>, <www.dlr.de/dlr/en/desktopdefault.aspx/tabid-10080/150_read-5773/year-all/>, <www.space.com/19064-japan-asteroid-sample-mission-hayabusa2.html>, <www.lpi.usra.edu/sbag/meetings/jan2013/presentations/sbag8_presentations/TUES_0900_Hayabusa-2.pdf>, <www.dlr.de/dlr/en/desktopdefault.aspx/tabid-10081/151_read-7355/year-all/#gallery/11287>,
<en.wikipedia.org/wiki/Hayabusa_2>.
Ref:
- N. Moskovitz, S. Abe, D. Osip, et al., 2012, American Astronomical Society, DPS meeting #44, #102.04, "Characterization of Hayabusa 2 target asteroid (162173) 1999 JU3." See: <adsabs.harvard.edu/abs/2012DPS....4410204M>.
- F. Vilas, 2012, American Astronomical Society, DPS meeting #44, #102.03, "New spectral reflectance observations of Hayabusa 2 Near-Earth Asteroid target 162173 1999 JU3." See: <adsabs.harvard.edu/abs/2012DPS....4410203V>.
- D. Lazzaro, M.A. Barucci, D. Perna, et al., 2012, Astronomy & Astrophysics, 549, 2, "Rotational spectra of (162173) 1999 JU3, the target of the Hayabusa 2 mission." See: <adsabs.harvard.edu/abs/2013A%26A...549L...2L>.
- N.A. Moskovitz, S. Abe, K.-S. Pan, et al., 2013, Icarus, 224, 24, "Rotational characterization of Hayabusa II target asteroid (162173) 1999 JU3." See: <www.sciencedirect.com/science/article/pii/S0019103513000699>.

2015, Apr

NASA spacecraft Dawn will reach dwarf planet (former main-belt asteroid) 1 Ceres (H = 3.34 mag, D = 952 km) and go into orbit for five months of operations, till July 2015; Dawn will stay with Ceres forever. See: <dawn.jpl.nasa.gov/>, <en.wikipedia.org/wiki/Ceres_(dwarf_planet)>.

2015, Apr 13-17

4th International Academy of Astronautics (IAA) Planetary Defense Conference, 13-17 April 2015, ESA/ESRIN, Frascati (Italy).

2015, Jun 16

Asteroid 1566 Icarus (1949 MA, H = 16.9 mag, D = 1.0 km, PHA) will pass Earth at a nominal miss distance of 20.95 LD. Minimal miss distance 20.95 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=1949+MA&orb=1>, <en.wikipedia.org/wiki/1566_Icarus>.
See also: 14 June 1968.

2016

Foreseen first light of the Large Synoptic Survey Telescope (LSST), a 6.4-m effective diameter telescope with a 9.6 square degree field and a 3.2 gigapixel camera, under development since 2000, to scan the sky from Cerro Pachón (northern Chile) near the Gemini South and Southern Astrophysical Research (SOAR) telescopes. Taking more than 800 panoramic images each night, it can cover the accessible sky twice a week. Limiting magnitude: v = 24.5 mag. The planned LSST baseline survey will be capable of providing orbits for 82% of PHAs with D > 140 m after ~ 10 yr of operation, and 90% complete for objects with D > 230 m. During its 10-year survey, LSST will produce 30 terabytes of raw astronomical data each night, resulting in a database catalog of 22 petabytes and an image archive of 100 petabytes. LSST is on schedule for full science operations in 2019.
See: <www.lsst.org/lsst>.
Ref:
-  Z. Ivezić, J.A. Tyson, M. Juriƒá, et al., 2007, in: A. Milani, G.B. Valsecchi & D. Vokrouhlický (eds.), Proc. IAU Symp. No. 236 on Near Earth Objects, our Celestial Neighbors: Opportunity and Risk, Prague (Czech Republic), 14-18 August 2006 (Cambridge: CUP), p. 353, "LSST, comprehensive NEO detection, characterization, and orbits." See: <adsabs.harvard.edu/abs/2007IAUS..236..353I>;
- R.L. Jones, S.R. Chesley, A.J. Connolly, A.W. Harris, et al., 2009, Earth, Moon, and Planets, 105, 101, "Solar System Science with LSST."  See: <adsabs.harvard.edu/abs/2009EM%26P..105..101J>;
- B. Corbin, 2010, presented at the 61st International Astronautical Congress, Prague (Czech Republic), 27 September - 1 October 2010, "Implementing advanced technologies and models to reduce uncertainty in a global, cost-effective asteroid mitigation system."   See: <www.spacegeneration.org/index.php/eventstopics/news/227-sgac-announces-the-winner-of-the-2010-move-an-asteroid-competition>, <www.spacegeneration.org/images/stories/Projects/NEO/Corbin_Asteroid_Paper.pdf>.
See also: <www.lsst.org/overview/overview_v1.0.pdf>, <www.lsst.org/Science/docs/DRM2.pdf>, <www.lsst.org/lsst/scibook>, <www.lsst.org/lsst/news>, <www.lsst.org/News/enews/director-201010.html>, <adsabs.harvard.edu/abs/2012AAS...21915605T>, <targetneo.jhuapl.edu/pdfs/sessions/TargetNEO-Session6-Jones.pdf>, <www.space.com/15447-3-2-billion-pixel-camera-telescope-critical.html>.

2016

Foreseen launch of NASA spacecraft Origins-Spectral Interpretation-Resource Identification-Security-Regolith Explorer (OSIRIS-REx), an asteroid sample return mission. Target asteroid 101955 (1999 RQ36H = 20.8 mag, D ≈ 575 m, NEO, PHA) will be visited in 2020, and the sample will return in 2023.
See: <www.nasa.gov/topics/solarsystem/features/osiris-rex.html>, <pirlwww.lpl.arizona.edu/~guym/OSIRIS-REx.pdf>, <www.space.com/11802-nasa-asteroid-mission-dangerous-1999-rq36.html>, <www.space.com/11808-nasa-asteroid-mission-osiris-rex-1999-rq36-infographic.html>, <www.space.com/12065-osiris-rex-asteroid-generations.html>,<www.grandpublic.obspm.fr/2016-2023-Retour-sur-Terre-d>, <web.mit.edu/newsoffice/2011/asteroid-mission-0726.html>, <ithacajr.nl/PHlcGq>, <www.space.com/13132-potentially-killer-asteroids-earth-nasa.html>.
See also: 29 December 2009.

2017, Oct 12

Asteroid 2012 TC4 (H = 26.5 mag, D ≈ 20 m) will pass Earth at a nominal miss distance of 0.5 LD. Minimum miss distance 0.03 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2012+TC4+&orb=1>.
See also: 12 October 1996, 12 October 2017.

2017, Dec 16

Asteroid 3200 Phaethon (1983 TB, H = 14.51 mag, D = 5100 m, M = 1.4 × 1014 kg, PHA, causing the annual Geminids meteor shower) will pass Earth at a nominal miss distance of 26.9 LD (= 0.07 AU). Minimum miss distance 26.8 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=1983+TB&orb=1>, <en.wikipedia.org/wiki/3200_Phaethon>.
Ref:
-  T. Kasuga, J.-I. Watanabe, M. Sato, 2006, Monthly Notices of the Royal Astronomical Society, 373, 1107, "Benefits of an impact mission to 3200 Phaethon: nature of the extinct comet and artificial meteor shower." See: <adsabs.harvard.edu/abs/2006MNRAS.373.1107K>.
See also: 10 December 2007, 14 December 2093.

2018, Apr 9

Asteroid 2008 GY21 (H = 27.6 mag, D ≈ 10 m) will pass Earth at a nominal miss distance of 2.7 LD. Minimum miss distance 0.5 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2008+GY21+&orb=1>.

2018, Dec 22

Asteroid 163899 (2003 SD220, H = 16.9 mag, D ≈ 1500 m, PHA) will pass Earth at a nominal miss distance of 7.4 LD. Minimum miss distance 7.4 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2003+SD220&orb=1>.

2020, Jul 14

Asteroid 2009 OS5 (H = 23.6 mag, D ≈ 70 m) will pass Earth at a nominal miss distance of 17.8 LD. Minimum miss distance 14.5 LD.
Possible target for NASA manned mission, with launch date 11 March 2020, and 170 day mission duration.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2009+OS5+&orb=1>.
See also: <www.nasa.gov/pdf/474223main_Johnson_ExploreNOW.pdf>.

2020, Oct 3

Asteroid 2001 GP2 (H = 26.9 mag, D ≈ 15 m) will pass Earth at a nominal miss distance of 3.2 LD. Minimum miss distance 0.5 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001+GP2+&orb=1>.

2021, Mar 21

Asteroid 231937 (2001 FO32, H = 17.7 mag, D ≈ 700 m, PHA) will pass Earth at 5.2 LD. Minimum miss distance 5.2 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001+FO32&orb=1>.

2021, Dec 11

Asteroid 4660 Nereus (1982 DB, H = 18.2 mag, D ≈ 800 m, PHA) will pass Earth at 10.2 LD. Minimum miss distance 10.2 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=1982+DB&orb=1>, <en.wikipedia.org/wiki/4660_Nereus>.
Ref:
-  M. Brozovic, S.J. Ostro, L.A.M. Benner, et al., 2009, Icarus, 201, 153, "Radar observations and a physical model of asteroid 4660 Nereus, a prime space mission target." See: <adsabs.harvard.edu/abs/2009Icar..201..153B>.
See also: 29 January 1900, 22 January 2002, 14 February 2060, 4 February 2071, 23 December 2112, and 4 February 2166.

2022, Dec 27

Asteroid 2010 XC15 (H = 21.4 mag, D ≈ 200 m, PHA) will pass Earth at a nominal miss distance of  2.0 LD. Minimum miss distance 2.0 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2010+XC15+&orb=1>, <en.wikipedia.org/wiki/2010_XC15>.
See also: 26 December 1907.

2023, Feb 3

Asteroid 2011 AG5 (H = 21.9 mag, D ≈ 145 m, PHA) will pass Earth at a nominal miss distance of 4.7 LD. Minimum miss distance 4.7 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2011+AG5&orb=1>, <en.wikipedia.org/wiki/2011_AG5>.
See also: <http://www.jpl.nasa.gov/news/news.php?release=2012-051>, <www.jpl.nasa.gov/news/news.cfm?release=2012-051>, <www.space.com/14683-big-asteroid-2011-ag5-threat-earth.html>, <www.space.com/14782-asteroid-threat-earth-impact-2011ag5.html>, <blogs.discovermagazine.com/badastronomy/files/2012/03/schweikart_letter_NASA_AG5.pdf>, <www.space.com/14872-asteroid-2011-ag5-earth-impact.html>.
See also: 26 February 2011, 4 February 2040.

2024, Oct 13

Asteroid 1036 Ganymed (1924 TD, H = 9.45 mag, D = 31.7 km), largest NEA known, will pass Earth at a nominal miss distance of 146 LD. Minimum miss distance 146 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=1924+TD&orb=1>, <en.wikipedia.org/wiki/1036_Ganymed>.
Ref:
J. Meeus, M. Drummen, September 2011, Zenit, "Ganymed in aantocht." See: <www.dekoepel.nl/zenit/september2011.html>.
See also: 13 October 2011.

2024, Dec 11

Asteroid 2007 XB23 (H = 27.1 mag, D ≈ 15 m) will pass Earth at a nominal miss distance of 1.1 LD. Minimum miss distance 0.3 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2007+XB23+&orb=1>.
See also: 13 December 2007.

2026, Feb 12

Asteroid 1999 AO10 (H = 23.9 mag, D ≈ 60 m) will pass Earth at a nominal miss distance of 10.43 LD. Minimum miss distance 10.36 LD.
Possible target for NASA manned mission, with launch date 19 September 2025, and 155 day mission duration.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=1999+AO10+&orb=1>, <en.wikipedia.org/wiki/1999_AO10>.
See also: <http://ow.ly/3FC2h>, <www.nasaspaceflight.com/2010/01/nasas-flexible-path-2025-human-mission-visit-asteroid/>, <www.nasa.gov/pdf/474223main_Johnson_ExploreNOW.pdf>, <www.spacegeneration.org/index.php/eventstopics/news/227-sgac-announces-the-winner-of-the-2010-move-an-asteroid-competition>, <www.spacegeneration.org/images/stories/Projects/NEO/Corbin_Asteroid_Paper.pdf>.

2026, Apr 14

Asteroid 2013 GM3 (H = 26.2 mag, D ≈ 20 m) will pass Earth at a nominal miss distance of 0.9 LD. Minimum miss distance 0.01 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2013+GM3+&orb=1>.
See also: 28 January 1987.

2027, Jun 6

Asteroid 4953 (1990 MU, H = 14.1 mag, D ≈ 5500 m, PHA) will pass Earth at a nominal miss distance of 12.0 LD. Minimum miss distance 12.0 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=1990+MU&orb=1>, <en.wikipedia.org/wiki/(4953)_1990_MU>.
See also: 5 June 2058.

2027, Aug 7

Asteroid 137108 (1999 AN10, H = 17.9 mag, D ≈ 900 m, PHA) will pass Earth at a nominal miss distance of 1.0 LD. Minimum miss distance 1.0 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=1999+AN10&orb=1>, <en.wikipedia.org/wiki/(137108)_1999_AN10>.
Ref:
-  A. Milani, S.R. Chesley, G.B. Valsecchi, 1999, Astronomy & Astrophysics (Letters), 346, L65, "Close approaches of asteroid 1999 AN10: resonant and non-resonant returns." See: <adsabs.harvard.edu/abs/1999A%26A...346L..65M>;
- D. Morrison, C.R. Chapman, D. Steel, R.P. Binzel, 2004, in: M.J.S. Belton, et al. (eds.), 2004, Mitigation of Hazardous Comets and Asteroids (Cambridge: CUP), p. 353, "Impacts and the public: communicating the nature of impact hazard." See: <adsabs.harvard.edu/abs/2004mhca.conf..353M>;
- B.G. Marsden, 2007, in: P. Bobrowsky & H. Rickman (eds.), 2007, Comet/Asteroid Impacts and Human Society (Berlin: Springer), p. 505, "Impact risk communication management (1998 – 2004): Has it improved?" See: <adsabs.harvard.edu/abs/2007caih.book.....B>.

2028, May 7

Asteroid 2000 SG344 (H = 24.8 mag, D ≈ 37 m) will pass Earth at a nominal miss distance of 7.6 LD. Minimum miss distance 7.5 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2000+SG344+&orb=1>, <en.wikipedia.org/wiki/2000_SG344>.
See also: 6 May 1999.

2028, May 20

Asteroid 2009 WR52 (H = 28.3 mag, D ≈ 8 m) will pass Earth at a nominal miss distance of 0.6 LD. Minimum miss distance 0.5 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2009+WR52+&orb=1>.

2028, Jun 26

Asteroid 153814 (2001 WN5, H = 18.2 mag, D ≈ 800 m, PHA) will pass Earth at a nominal miss distance of 0.6 LD. Minimum miss distance 0.8 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001+WN5&orb=1>, <en.wikipedia.org/wiki/(153814)_2001_WN5>.

2028, Jul 26

Asteroid 2011 LJ19 (H = 21.4 mag, D ≈ 200 m, PHA) will pass Earth at a nominal miss distance of 3.8 LD. Minimum miss distance 0.8 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2011+LJ19+&orb=1>.

2028, Oct 26

Asteroid 35396 (1997 XF11, H = 16.9 mag, D = 1500 m, PHA) will pass Earth at a nominal miss distance of 2.417 LD. Minimum miss distance 2.416 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=1997+XF11&orb=1>, <en.wikipedia.org/wiki/(35396)_1997_XF11>.
See also: 27 October 2095.

2028, Dec 30

Asteroid 2012 XE133 (H = 23.4 mag, D ≈ 75 m) will pass Earth at a nominal miss distance of 2.2 LD. Minimum miss distance 0.9 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2012+XE133+&orb=1>.Ref:
-  C. de la Fuente Marcos, R. de la Fuente Marcos, 15 March 2013, Monthly Notices of the Royal Astronomical Society, e-print arXiv:1303.3705, "Asteroid 2012 XE133, a transient companion to Venus." See: <adsabs.harvard.edu/abs/2013arXiv1303.3705D>.

2029, Apr 13

Asteroid 99942 Apophis (2004 MN4, H = 19.7 mag, D = 325 ± 15 m, M ≈ 4.7 × 1010 kg, orbital P = 0.89 yr, PHA) will pass Earth at a nominal miss distance of 0.0997 LD (= 38,329 km = 6.016 REarth from the geocenter) with a relative velocity of 7.4 km/s. Minimum miss distance 0.0994 LD (= 38,211 km, = 5.998 REarth from the geocenter). As a result of its close passage, this minor planet will move from the Aten to the Apollo class.  Probability of impact on 13 April 2036 ~1:1,000,000.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2004+MN4&orb=1>, <neo.jpl.nasa.gov/risk/a99942.html>, <neo.jpl.nasa.gov/apophis/>, <www.esa.int/Our_Activities/Space_Science/Herschel_intercepts_asteroid_Apophis>, <www.jpl.nasa.gov/asteroidwatch/newsfeatures.cfm?release=2013-017>, <neo.jpl.nasa.gov/news/news178.html>, <en.wikipedia.org/wiki/99942_Apophis>.
Ref:
-  A.M. MacRobert, 15 February 2005, Sky & Telescope, 109 (5), 16, "Asteroid 2004 MN4: a really near miss!" See: <adsabs.harvard.edu/abs/2005S%26T...109e..16M>;
- D. Chandler, 2005, New Scientist, 25 June 2005, issue 2505, "Killer asteroid: too close for comfort." See: <www.newscientist.com/article/mg18625051.200-killer-asteroid-too-close-for-comfort.html>;
- B.G. Marsden, 2007, in: P. Bobrowsky & H. Rickman (eds.), 2007, Comet/Asteroid Impacts and Human Society (Berlin: Springer), p. 505, "Impact risk communication management (1998 – 2004): Has it improved?" See: <adsabs.harvard.edu/abs/2007caih.book.....B>;
- J.D. Giorgini, L.A.M. Benner, S.J. Ostro, et al., 2008, Icarus, 193, 1, "Predicting the Earth encounters of (99942) Apophis." See: <adsabs.harvard.edu/abs/2008Icar..193....1G>;
- S.R. Chesley, A. Milani, et al., 2009, AAS-DPS, 41.4306, "An updated assessment of the impact threat from 99942 Apophis." See: <adsabs.harvard.edu/abs/2009DPS....41.4306C>;
- J. Žižka, D. Vokrouhlický, 2011, Icarus, 211, 511, "Solar radiation pressure on (99942) Apophis." See: <adsabs.harvard.edu/abs/2011Icar..211..511Z>.
- D. Bancelin, D. Hestrofer, W. Thuillot, October 2012, American Astronomical Society, DPS meeting #44, #210.01, "Asteroid Apophis from past, present and future observations." See: <adsabs.harvard.edu/abs/2012DPS....4421001B>.
- D. Farnocchia, S.R. Chesley, P.W. Chodas, et al., 2013, 224, 192, "Yarkovsky-driven impact risk analysis for asteroid (99942) Apophis." See: <www.sciencedirect.com/science/article/pii/S0019103513000821>.
See also:
<neo.jpl.nasa.gov/news/news164.html>, <neo.jpl.nasa.gov/apophis/>, <adsabs.harvard.edu/abs/2009DPS....41.4306C>, <ssd.jpl.nasa.gov/sbdb.cgi?sstr=Apophis&orb=1>,  <newton.dm.unipi.it/neodys/index.php?pc=1.1.8&n=Apophis>, <news.bbc.co.uk/2/hi/science/nature/8296796.stm>, <content.usatoday.com/communities/sciencefair/post/2010/11/apophis-asteroid-2013/1>, <bit.ly/uMuw5Z>, 13 April 1907, 14 April 1949, 14 April 1998, 19 June 2004, 9 January 2013, 23 March 2036, 11 September 2059.

2029, Oct 21

Asteroid 2008 UA202 (H = 29.4 mag, D ≈ 5 m) will pass Earth at a nominal miss distance of 7.6 LD. Minimum miss distance 0.04 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2008+UA202+&orb=1>.
See also: 18 October 2008.

2032, Aug 15

Asteroid 2008 DB (H = 25.7 mag, D ≈ 25 m) will pass Earth at a nominal miss distance of 5.7 LD. Minimum miss distance 0.3 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2008+DB+&orb=1>.

2033, Sep 14

Asteroid 2006 SC (H = 25.2 mag, D ≈ 35 m) will pass Earth at a nominal miss distance of 6.8 LD. Minimum miss distance 0.10 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2006+SC+&orb=1>.

2034, Oct 3

Asteroid 2005 TA (H = 27.2 mag, D ≈ 15 m) will pass Earth at a nominal miss distance of 2.5 LD. Minimum miss distance 0.6 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2005+TA++&orb=1>.

2036, Jan 3

Object 2010 KQ (H = 29.0 mag, D ≈ 6 m) will pass Earth at a nominal miss distance of 2.3  LD. Minimum miss distance 2.3 LD.
Discovered in 2010, it was  found that its orbit around the Sun is so similar to the Earth's orbit, that it  is suspected to be a rocket stage which escaped years ago from the Earth-Moon  system.
See: <en.wikipedia.org/wiki/2010_KQ>.
See also: <neo.jpl.nasa.gov/news/news168.html>.
See also: 21 May 2010.

2036, Mar 23

Asteroid 99942 Apophis (2004 MN4, H = 19.7 mag, D = 325 ± 15 m, M ≈ 4.7 × 1010 kg, orbital P = 0.89 yr, PHA) will pass Earth at a nominal miss distance of 151.4 LD. Minimum miss distance 142.0 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2004+MN4&orb=1>, <www.esa.int/Our_Activities/Space_Science/Herschel_intercepts_asteroid_Apophis>, <www.jpl.nasa.gov/asteroidwatch/newsfeatures.cfm?release=2013-017>, <en.wikipedia.org/wiki/99942_Apophis>.
See also: <neo.jpl.nasa.gov/apophis/>, <news.bbc.co.uk/2/hi/science/nature/8296796.stm>, <http://blogs.scientificamerican.com/observations/2009/10/08/planetary-bombardments-past-and-future-third-dispatch-from-the-annual-planets-meeting/>, <en.rian.ru/science/20110126/162318648.html>, <www.space.com/10752-apophis-asteroid-hit-earth.html>, <www.space.com/19221-asteroid-apophis-earth-safe-2036.html>.
See also: 13 April 1907, 14 April 1949, 14 April 1998, 19 June 2004, 9 January 2013, 13 April 2029, 11 September 2059.

2038, Feb 11

Asteroid 2002 NY40 (H = 19.2 mag, D ≈ 500 m, PHA) will pass Earth at a nominal miss distance of  2.8 LD. Minimum miss distance 2.8 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2002+NY40++&orb=1>.
See also: 18 Aug 2002.

2038, Nov 16

Asteroid 159857 (2004 LJ1, H = 15.4 mag, D ≈ 3000 m, PHA) will pass Earth at a nominal miss distance of 7.7 LD. Minimum miss distance 7.7 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2004+LJ1+&orb=1>.

2039, Nov 12

Asteroid 2005 VN5 (H = 27.0 mag, D ≈ 15 m) will pass Earth at a nominal miss distance of 6.8 LD. Minimum miss distance 0.4 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2005+VN5+&orb=1>.

2040, Feb 4

Asteroid 2011 AG5 (H = 21.9 mag, D ≈ 145 m, PHA) will pass Earth at a nominal miss distance of 2.8 LD. Minimum miss distance 2.3 LD.
Ref:
- S.R. Chesley, S. Bhaskaran, P.W. Chodas, et al., October 2012, American Astronomical Society, DPS meeting #44, #305.09, "Impact hazard assessment for 2011 AG5." See: <adsabs.harvard.edu/abs/2012DPS....4430509C>.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2011+AG5&orb=1>, <en.wikipedia.org/wiki/2011_AG5>.
See also: <www.jpl.nasa.gov/asteroidwatch/newsfeatures.cfm?release=2012-051>, <www.jpl.nasa.gov/news/news.cfm?release=2012-051>, <www.space.com/14683-big-asteroid-2011-ag5-threat-earth.html>, <www.space.com/14782-asteroid-threat-earth-impact-2011ag5.html>, <blogs.discovermagazine.com/badastronomy/files/2012/03/schweikart_letter_NASA_AG5.pdf>, <www.space.com/14872-asteroid-2011-ag5-earth-impact.html>, <www.space.com/16169-earth-safe-asteroid-2011ag5-flyby.html>, <neo.jpl.nasa.gov/news/news176.html>, <www.ifa.hawaii.edu/info/press-releases/allclear2011AG5.shtml>,
<www.space.com/19045-asteroid-earth-impact-2040-debunked.html>.
See also: Workshop 29 May 2012.
See also: 26 February 2011, 3 February 2023.

2041, Apr 8

Asteroid 2012 UE34 (H = 23.1 mag, D ≈ 85 m) will pass Earth at a nominal miss distance of 0.3 LD. Minimum miss distance 0.3 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2012+UE34+&orb=1>.
See also: 8 April 1991.

2041, Nov 7

Asteroid 144898 (2004 VD17, H = 18.8 mag, D ≈ 500 m, PHA) will pass Earth at a nominal miss distance of 5.1 LD. Minimum miss distance 5.0 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2004+VD17&orb=1>, <en.wikipedia.org/wiki/(144898)_2004_VD17>.
Ref:
-  F. de Luise, D. Perna, E. Dotto, et al., 2007, Icarus, 191, 628, "Physical investigation of the potentially hazardous asteroid (144898) 2004 VD17." See: <adsabs.harvard.edu/abs/2007Icar..191..628D>.
See also: <www.thespacereview.com/article/581/2>.
See also: 7 May 2148.

2042, Dec 29

Asteroid 2012 AP10 (H = 26.4 mag, D ≈ 20 m) will pass Earth at a nominal miss distance of 1.4 LD. Minimum miss distance 0.4 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2012+AP10+&orb=1>.

2044, Sep 27

Asteroid 2011 TO (H = 26.3 mag, D ≈ 20 m) will pass Earth at a nominal miss distance of 1.2 LD. Minimum miss distance 0.7 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2011+TO+&orb=1>.
See also: 28 September 1980, 28 September 2011.

2046, Feb 15

Asteroid 2012 DA14 (H = 24.1 mag, D ≈ 40 × 20 m) will pass Earth at a nominal miss distance of 5.77 LD. Minimum miss distance 5.76 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2012+DA14&orb=1>, <en.wikipedia.org/wiki/2012_DA14>.
See also: 17 February 1918, 19 August 2004, 16 February 2012, 15 February 2013, 15 February 2087.

2046, Jul 21

Asteroid 2003 SM84 (H = 22.7 mag, D ≈ 100 m) will pass Earth at a nominal miss distance of 19.98 LD. Minimum miss distance 19.97 LD.
This NEA is being considered by ESA as a candidate target for the Don Quijote mission to study the effects of impacting a spacecraft into an asteroid. Also possible target for NASA manned mission, with launch date 22 March 2046, and 180 day mission duration.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2003+SM84+&orb=1>, <en.wikipedia.org/wiki/2003_SM84>.
See also: <http://ow.ly/3FBXj>, <www.nasa.gov/pdf/474223main_Johnson_ExploreNOW.pdf>.

2046, Nov 25

Asteroid 1994 WR12 (H = 22.1 mag, D ≈ 140 m) will pass Earth at a nominal miss distance of 3.7 LD. Minimum miss distance 0.4 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=1994+WR12+&orb=1>, <en.wikipedia.org/wiki/1994_WR12>.

2047, Feb 13

Asteroid 2012 HG2 (H = 27.0 mag, D ≈ 15 m) will pass Earth at a nominal miss distance of 0.23 LD (= 13.8 REarth from the geocenter). Minimum miss distance 0.12 LD (= 7.21 REarth from the geocenter).
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2012+HG2+&orb=1>.
See also: 17 April 2012.

2047, Aug 14

Asteroid 2011 DS (H = 27.0 mag, D ≈ 15 m) will pass Earth at a nominal miss distance of 9.9. Minimum miss distance 0.8 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2011+DS+&orb=1>.
See also:18 February 1966, 18 February 2050.

2048, May 31

Asteroid 2007 VK184 (H = 22.0 mag, D ≈ 130 m) will pass Earth at a nominal miss distance of 12.47 LD (= 752 REarth from the geocenter). Minimum miss distance 0.022 LD (= 1.33 REarth from the geocenter).
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2007+VK184+&orb=1>, <en.wikipedia.org/wiki/2007_VK184>.
Ref:
-  B. Corbin, 2010, presented at the 61st International Astronautical Congress, Prague (Czech Republic), 27 September - 1 October 2010, "Implementing advanced technologies and models to reduce uncertainty in a global, cost-effective asteroid mitigation system." See: <www.spacegeneration.org/index.php/eventstopics/news/227-sgac-announces-the-winner-of-the-2010-move-an-asteroid-competition>, <www.spacegeneration.org/images/stories/Projects/NEO/Corbin_Asteroid_Paper.pdf>.
See also: <http://neo.jpl.nasa.gov/news/news183.html>, <www.oosa.unvienna.org/pdf/pres/stsc2011/tech-42.pdf>.
See also: 6 November 2007.

2048, Oct 18

Asteroid 2007 UD6 (H = 28.3 mag, D ≈ 8 m) will pass Earth at a nominal miss distance of 0.3 LD. Minimum miss distance 0.09 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2007+UD6&orb=1>.
See also: 18 October 2007.

2050, Feb 18

Asteroid 2011 DS (H = 27.0 mag, D ≈ 15 m) will pass Earth at a nominal miss distance of 6.3 LD. Minimum miss distance 0.5 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2011+DS&orb=1>.
See also: 18 February 1966, 14 August 2047.

2050, Oct 8

Asteroid 2006 GU2 (H = 27.8 mag, D ≈ 10 m) will pass Earth at a nominal miss distance of 4.8 LD. Minimum miss distance 0.3 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2006+GU2+&orb=1>.

2051, Mar 24

Asteroid 4581 Asclepius (1989 FC, H = 20.4 mag, D ≈ 300 m, PHA) will pass Earth at a nominal miss distance of 4.77 LD. Minimum miss distance 4.76 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=1989+FC&orb=1>, <en.wikipedia.org/wiki/4581_Asclepius>.
See also: 22 March 1989, 16 August 2012.

2054, May 8

Asteroid 2007 JB21 (H = 25.4 mag, D ≈ 30 m) will pass Earth at a nominal miss distance of 2.3. Minimum miss distance 0.5 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2007+JB21+&orb=1>.
See also: 19 May 1910.

2054, Sep 17

Asteroid 2003 RS1 (H = 21.7 mag, D ≈ 150 m, PHA) will pass Earth at a nominal miss distance of 5.8 LD. Minimum miss distance 0.8 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2003+RS1&orb=1>.

2055, May 13

Asteroid 2011 AX22 (H = 24.7 mag, D ≈ 40 m) will pass Earth at a nominal miss distance of 1.2 LD. Minimum miss distance 0.8 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2011+AX22+&orb=1>.
See also: 13 May 1930.

2057, Oct 9

Asteroid 2010 FV9 (H = 25.4 mag, D ≈ 30 m) will pass Earth at a nominal miss distance of 1.5 LD. Minimum miss distance 1.0 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2010+FV9+&orb=1>.

2058, Jun 5

Asteroid 4953 (1990 MU, H = 14.1 mag, D ≈ 5500 m, PHA) will pass Earth at a nominal miss distance of 9.0 LD. Minimum miss distance 9.0 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=1990+MU&orb=1>, <en.wikipedia.org/wiki/(4953)_1990_MU>.
See also: 6 June 2027.

2059, Sep 11

Asteroid 99942 Apophis (2004 MN4, H = 19.7 mag, D = 325 ± 15 m,M ≈ 4.7 × 1010 kg, orbital P = 0.89 yr, PHA) will pass Earth at a nominal miss distance of 9.5 LD. Minimum miss distance is 8.7 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2004+MN4&orb=1>, <www.esa.int/Our_Activities/Space_Science/Herschel_intercepts_asteroid_Apophis>, <en.wikipedia.org/wiki/99942_Apophis>.
See also: <neo.jpl.nasa.gov/news/news164.html>, <news.bbc.co.uk/2/hi/science/nature/8296796.stm>, <www.scientificamerican.com/blog/post.cfm?id=planetary-bombardments-past-and-fut-2009-10-08>.
See also: 13 April 1907, 14 April 1949, 14 April 1998, 19 June 2004, 9 January 2013, 13 April 2029, 23 March 2036.

2059, May 21

Asteroid 2012 WS3 (H = 25.9 mag, D ≈ 20 m) will pass Earth at a nominal miss distance of 2.2 LD. Minimum miss distance 0.3 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2012+WS3&orb=1>.

2059, Sep 25

Asteroid 2008 ST (H = 27.1 mag, D ≈ 15 m) will pass Earth at a nominal miss distance of 4.3 LD. Minimum miss distance 0.3 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2008+ST+&orb=1>.

2059, Nov 23

Asteroid 2009 WM1 (H = 20.4 mag, D ≈ 300 m, PHA) will pass Earth at a nominal miss distance of 1.5 LD. Minimum miss distance 0.2 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2009+WM1+&orb=1>, <en.wikipedia.org/wiki/2009_WM1>.

2059, Dec 14

Asteroid 2004 YC (H = 25.4 mag, D ≈ 30 m) will pass Earth at a nominal miss distance of 1.2 LD. Minimum miss distance 0.9 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2004+YC+&orb=1>.

2060, Feb 14

Asteroid 4660 Nereus (1982 DB, H = 18.2 mag, D ≈ 800 m, PHA) will pass Earth at 3.1 LD. Minimum miss distance 3.1 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=1982+DB&orb=1>, <en.wikipedia.org/wiki/4660_Nereus>.
Ref:
-  M. Brozovic, S.J. Ostro, L.A.M. Benner, et al., 2009, Icarus, 201, 153, "Radar observations and a physical model of asteroid 4660 Nereus, a prime space mission target." See: <adsabs.harvard.edu/abs/2009Icar..201..153B>.
See also: 29 January 1900, 22 January 2002, 11 December 2021, 4 February 2071, 23 December 2112, and 4 February 2166.

2060, Sep 23

Asteroid 101955 (1999 RQ36H = 20.8 mag, D ≈ 575 m, PHA) will pass Earth at a nominal miss distance of 2.0 LD. Minimum miss distance 2.0 LD. Possible Earth impact in 2182.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=1999+RQ36&orb=1>, <en.wikipedia.org/wiki/(101955)_1999_RQ36>.
Ref:
-  A. Milani, S.R. Chesley, M.E. Sansaturio, et al., 2009, Icarus, 203, 460, "Long term impact risk for (101955) 1999 RQ36." See: <adsabs.harvard.edu/abs/2009Icar..203..460M>;
- H. Campins, A. Morbidelli, K. Tsiganis, et al., 2010, Astrophysical Journal Letters, 721, L53, "The origin of asteroid 101955 (1999 RQ36)." See: <adsabs.harvard.edu/abs/2010ApJ...721L..53C>;
- D.S. Lauretta, M.J. Drake, R.P.Binzel, et al., 2010, presented in: 73rd Annual Meeting of the Meteoritical Society, 26-30 July 2010, New York (NY, USA), Meteoritics and Planetary Science Supplement, id.5153, "Asteroid (101955) 1999 RQ36: optimum target for an asteroid sample return mission." See: <adsabs.harvard.edu/abs/2010M%26PSA..73.5153L>;
- B. Corbin, 2010, presented at the 61st International Astronautical Congress, Prague (Czech Republic), 27 September - 1 October 2010, "Implementing advanced technologies and models to reduce uncertainty in a global, cost-effective asteroid mitigation system.." See: <www.spacegeneration.org/index.php/eventstopics/news/227-sgac-announces-the-winner-of-the-2010-move-an-asteroid-competition>, <www.spacegeneration.org/images/stories/Projects/NEO/Corbin_Asteroid_Paper.pdf>;
- M. Delbò, P. Michel, 2011, Astrophysical Journal (Letters), 728, L42, "Temperature history and dynamical evolution of (101955) 1999 RQ36: a potential target for sample return from a primitive asteroid." See: <adsabs.harvard.edu/abs/2011ApJ...728L..42D >.
See also:  <neo.jpl.nasa.gov/risk/a101955.html>, <www.space.com/scienceastronomy/dangerous-asteroid-impact-earth-2182-100727.html>.
See also: 22 September 1999.

2061, Feb 16

Asteroid 2010 CK19 (H = 27.9 mag, D ≈ 9 m) will pass Earth at a nominal miss distance of 9.1. Minimum miss distance 0.3 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2010+CK19+&orb=1>.
See also: 17 February 2010.

2062, Sep 19

Asteroid 2003 SW130 (H = 29.1 mag, D ≈ 5 m) will pass Earth at a nominal miss distance of 4.2. Minimum miss distance 0.8 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2003+SW130+&orb=1>
See also: 19 September 1990, 19 September 2003.

2063, Mar 11

Asteroid 2006 EC (H = 26.6 mag, D ≈ 20 m) will pass Earth at a nominal miss distance of 8.8. Minimum miss distance 0.7 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2006+EC+&orb=1>.
See also: 8 March 2006.

2063, Nov 21

Asteroid 2009 WJ6 (H = 27.6 mag, D ≈ 10 m) will pass Earth at a nominal miss distance of 3.9 LD.Minimum miss distance 0.3 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2009+WJ6+&orb=1>.
See also: 20 November 2009.

2065, May 28

Asteroid 2005 WY55 (H = 20.7 mag, D ≈ 250 m, PHA) will pass Earth at a nominal miss distance of 0.9 LD. Minimum miss distance 0.9 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2005+WY55+&orb=1>, <en.wikipedia.org/wiki/2005_WY55>.

2065, Oct 24

Asteroid 2010 FN (H = 26.6 mag, D ≈ 20 m) will pass Earth at a nominal miss distance of 8.4. Minimum miss distance 0.6 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2010+FN+&orb=1>.
See also: 25 October 2124.

2066, Feb 7

Asteroid 2008 CE22 (H = 26.4 mag, D ≈ 20 m) will pass Earth at a nominal miss distance of 2.5 LD. Minimum miss distance 0.5 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2008+CE22+&orb=1>.
See also: 6 February 2008, 8 February 2122.

2066, Apr 16

Asteroid 2004 RQ252 (H = 22.4 mag, D ≈ 120 m) will pass Earth at a nominal miss distance of 2.4 LD. Minimum miss distance 0.5 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2004+RQ252+&orb=1>.

2066, Aug 22

Asteroid 2013 QM48 (H = 27.4 mag, D ≈ 10 m) will pass Earth at a nominal miss distance of 6.3 LD. Minimum miss distance 0.3 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2013+QM48+&orb=1>.

2066, Sep 23

Asteroid 2011 SR5 (H = 21.0 mag, D ≈ 200 m, PHA) will pass Earth at a nominal miss distance of 1.3 LD. Minimum miss distance 1.0 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2011+SR5+&orb=1>.

2067, Mar 3

Asteroid 2009 DD45 (H = 25.8 mag, D ≈ 25 m) will pass Earth at a nominal miss distance of 3.1 LD. Minimum miss distance 0.3 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2009+DD45+&orb=1>, <en.wikipedia.org/wiki/2009_DD45>.
See also: 2 March 2009.

2068,Jan 7

Asteroid 2010 VB1 (H = 23.3 mag, D ≈ 80 m) will pass Earth at a nominal miss distance of 1.3 LD. Minimum miss distance 0.2 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2010+VB1+&orb=1>.
See also: 6 January 1936.

2069, Feb 5

Asteroid 2008 CT1 (H = 27.6 mag, D ≈ 10 m) will pass Earth at a nominal miss distance of 3.8 LD. Minimum miss distance 0.0 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2008+CT1+&orb=1>.
See also: 5 February 2008.

2069, Nov 5

Asteroid 4179 Toutatis (1989 AC, H = 15.3 mag, D = 4.6×2.4×1.9  km, orbital P = 4.03 yr, PHA) will pass Earth at a nominal miss distance of 7.7 LD. Minimum miss distance 7.7 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=1989+AC&orb=1>, <en.wikipedia.org/wiki/4179_Toutatis>.
See also: 8 December 1992, 30 November 1996, 31 October 2000, 29 September 2004, 9 November 2008, 12 December 2012.

2071, Feb 4

Asteroid 4660 Nereus (1982 DB, H = 18.2 mag, D ≈ 800 m, PHA) will pass Earth at 5.8 LD. Minimum miss distance 5.8 LD. 
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=1982+DB&orb=1>, <en.wikipedia.org/wiki/4660_Nereus>.
Ref:
- M. Brozovic, S.J. Ostro, L.A.M. Benner, et al., 2009, Icarus, 201, 153, "Radar observations and a physical model of asteroid 4660 Nereus, a prime space mission target." See: <adsabs.harvard.edu/abs/2009Icar..201..153B>. 
See also 29 January 1900, 22 January 2002, 11 December 2021, 14 February 2060, 23 December 2112, and 4 February 2166.

2071, May 26

Asteroid 66391 (1999 KW4, H = 16.5 mag, D ≈ 2000 m, PHA) will pass Earth at 6.8 LD. Minimum miss distance 6.8 LD.
Binary asteroid.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=1999+KW4&orb=1>, <en.wikipedia.org/wiki/(66391)_1999_KW4>.
See also: 25 May 2001.

2071, Oct 30

Asteroid 154276 (2002 SY50, H = 17.6 mag, D ≈ 1000 m, PHA) will pass Earth at a nominal miss distance of 3.4 LD. Minimum miss distance 3.4 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2002+SY50&orb=1>.

2072, Mar 25

Asteroid 2012 FS35, H = 30.3 mag, D ≈ 3 m) will pass Earth at a nominal miss distance of 3.0 LD. Minimum miss distance 0.3 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2008+CT1+&orb=1>.
See also: 25 March 2012.

2073, Apr 29

Asteroid 164121 (2003 YT1, H = 16.1 mag, D ≈ 2000 m, PHA) will pass Earth at a nominal miss distance of 4.4 LD. Minimum miss distance 4.4 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2003+YT1&orb=1>.
See also: 1 May 2175.

2074, May 3

Asteroid 2006 JY26 (H = 28.3 mag, D ≈ 8 m) will pass Earth at a nominal miss distance of 4.33 LD. Minimum miss distance 0.0036 LD (= 0.22 REarth from the geocenter).
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2006+JY26+&orb=1>.
Ref:
-  R. Brasser, P. Wiegert, 2008, Monthly Notices of the Royal Astronomical Society, 386, 2931, "Asteroids on Earth-like orbits and their origin." See: <adsabs.harvard.edu/abs/2008MNRAS.386.2031B>.
See also: <fromthegonzo.wordpress.com/2006/05/12/asteroid-impact-effects/>, 10 May 2006.

2075, Sep 11

Asteroid 2009 RY3 (H = 24.6 mag, D ≈ 40 m) will pass Earth at a nominal miss distance of 5.5 LD. Minimum miss distance 1.0 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2009+RY3++&orb=1>.

2075, Nov 8

Asteroid 308635 (2005 YU55, H = 21.1 mag, D ≈ 325  m, Po = 1.22 yr, PHA) will pass Earth at a nominal miss distance of 1.5 LD. Minimum Earth miss distance 0.9 LD. 
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2005+YU55&orb=1>, <en.wikipedia.org/wiki/2005_YU55>.
See also: 12 August 2005, 8 November 2011.

2076, Aug 4

Asteroid 2002 LV (H = 16.5 mag, D ≈ 1500 m, PHA) will pass Earth at a nominal miss distance of 4.2 LD. Minimum miss distance 4.2 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2002+LV+&orb=1>.

2076, Oct 11

Asteroid 2004 XG29 (H = 25.4 mag, D ≈ 30 m) will pass Earth at a nominal miss distance of 6.5 LD. Minimum miss distance 1.0 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2004+XG29+&orb=1>.

2076, Oct 29

Asteroid 2005 UW5 (H = 27.5 mag, D ≈ 10 m) will pass Earth at a nominal miss distance of 1.4 LD. Minimum miss distance 0.9 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2005+UW5+&orb=1>.
See also: 27 October 1926, 30 October 2005.

2077, Oct 25

Asteroid 2011 WL2 (H = 20.7 mag, D ≈ 250 m, PHA) will pass Earth at a nominal miss distance of 2.6 LD. Minimum miss distance 1.8 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2011+WL2+&orb=1>.
See also: 26 October 2087.

2078, Oct 31

Asteroid 2000 UK11 (H = 25.0 mag, D ≈ 35 m) will pass Earth at a nominal miss distance of 4.7 LD. Minimum miss distance 0.8 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2000+UK11+&orb=1>.

2079, Apr 16

Asteroid 52768 (1998 OR2, H = 15.8 mag, D ≈ 2500 m, PHA) will pass Earth at a nominal miss distance of 4.6 LD. Minimum miss distance 4.6 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=1998+OR2&orb=1>.
See also: 16 April 2127.

2080, Aug 12

Asteroid 2011 CU46 (H = 25.4 mag, D ≈ 30 m) will pass Earth at a nominal miss distance of 2.8 LD. Minimum miss distance 0.6 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2011+CU46+&orb=1>.

2080, Nov 13

Asteroid 2007 VF189 (H = 28.3 mag, D ≈ 8 m) will pass Earth at a nominal miss distance of 0.3 LD. Minimum miss distance 0.2 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2007+VF189+&orb=1>.
See also: 14 November 1944, 14 November 2007.

2082, Feb 11

Asteroid 2013 PS13 (H = 27.6 mag, D ≈ 10 m), will pass Earth at a nominal miss distance of 1.7 LD. Minimum miss distance 0.2 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2013+PS13+&orb=1>.
See also: 11 February 2082.

2086, Jun 18

Asteroid 2011 MD (H = 28.1 mag, D ≈ 9 m) will pass Earth at a nominal miss distance of 1.6 LD. Minimum miss distance 0.4 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2011+MD+&orb=1>, <en.wikipedia.org/wiki/2011_MD>.
See also: 27 June 2011

2086, Oct 21

Asteroid 2340 Hathor (1976 UA, H = 19.2 mag, D ≈ 300 m, PHA) will pass Earth at a nominal miss distance of 2.26 LD. Minimum miss distance 2.25 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=1976+UA+&orb=1>.

2086, Oct 31

Asteroid 69230 Hermes (1937 UB, H = 17.5 mag, D ≈ 1100 m, PHA) will pass Earth at a nominal miss distance of 9.5 LD. Minimum miss distance 9.5 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=1937+UB&orb=1>, <en.wikipedia.org/wiki/69230_Hermes>.
See also: 29 October 1914, 30 October 1937, 26 April 1942, 1 November 1954, 30 April 2123.

2087, Feb 15

Asteroid 2012 DA14 (H = 24.1 mag, D ≈ 40 × 20 m) will pass Earth at a nominal miss distance of 5.1 LD. Minimum miss distance 4.6 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2012+DA14&orb=1>, <en.wikipedia.org/wiki/2012_DA14>.
See also: 17 February 1918, 19 August 2004, 16 February 2012, 15 February 2013, 15 February 2046.

2087, Oct 26

Asteroid 2011 WL2 (H = 20.7 mag, D ≈ 250 m, PHA) will pass Earth at a nominal miss distance of 1.1 LD. Minimum miss distance 0.5 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2011+WL2+&orb=1>.
See also: 25 October 2077.

2088, May 15

Asteroid 2012 HZ33 (H = 20.4 mag, D ≈ 300 m, PHA) will pass Earth at a nominal miss distance of 4.8 LD. Minimum miss distance 3.7 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2012+HZ33+&orb=1>.

2089, Feb 6

Asteroid 2012 PK24 (H = 23.6 mag, D ≈ 70 m) will pass Earth at a nominal miss distance of 5.2 LD. Minimum miss distance 0.4 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2012+PK24+&orb=1>.

2093, Dec 14

Asteroid 3200 Phaethon (1983 TB, H = 14.51 mag, D = 5100 m, M = 1.4 × 1014 kg, PHA) will pass Earth at a nominal miss distance of 7.7 LD (= 0.02 AU). Minimum miss distance 7.7 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=1983+TB&orb=1>, <en.wikipedia.org/wiki/3200_Phaethon>.
See also: 10 December 2007, 16 December 2017.

2095, Sep 6

Asteroid 2010 RF12 (H = 28.4 mag, D ≈ 8 m) will pass Earth at a nominal miss distance of 0.12 LD. Minimum miss distance 0.0037 LD ( = 0.22 REarth = 1426 km from the geocenter).
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2010+RF12+&orb=1>, <en.wikipedia.org/wiki/2010_RF12>.
See also: 10 September 1915, 8 September 2010.

2095, Oct 27

Asteroid 35396 (1997 XF11, H = 16.9 mag, D = 1500 m, PHA) will pass Earth at a nominal miss distance of 5.17 LD. Minimum miss distance 5.04 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=1997+XF11&orb=1>, <en.wikipedia.org/wiki/(35396)_1997_XF11>.
See also: <www.minorplanetcenter.net/iau/pressinfo/1997XF11Globe.html>.
See also: 26 October 2028.

2097, Apr 7

Asteroid 2011 GW9 (H = 28.1 mag, D ≈ 9 m) will pass Earth at a nominal miss distance of 7.6 LD. Minimum miss distance 1.0 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2011+GW9+&orb=1>.
See also: 6 April 2011.

2099, Dec 18

Asteroid  33342 (1998 WT24, H = 17.9 mag, D ≈ 900 m, PHA) will pass Earth at a nominal miss distance of 4.9 LD. Minimum miss distance 4.9 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=1998+WT24&orb=1>, <en.wikipedia.org/wiki/(33342)_1998_WT24>.
Ref:
-  A.M. MacRobert, Sky & Telescope, 25 June 2004, "A close visitor tumbles by." See: <www.skyandtelescope.com/news/3304726.html>;
- M.W. Busch, L.A.M. Benner, S.J. Ostro, et al., 2008, Icarus, 195, 614, "Physical properties of near-Earth asteroid (33342) 1998 WT24." See: <adsabs.harvard.edu/abs/2008Icar..195..614B>;  corrigendum 2008, Icarus, 197, 375. See: <adsabs.harvard.edu/abs/2008Icar..197..375B>. 
See also: <antwrp.gsfc.nasa.gov/apod/ap011224.html>.

2101, Jan 2

Asteroid 2007 YV56 (H = 21.0 mag, D ≈ 200 m, PHA) will pass Earth at a nominal miss distance of 0.6 LD. Minimum miss distance 0.6 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2007+YV56+&orb=1>.

2101, Apr 24

Asteroid 2008 GD110 (H = 24.5 mag, D ≈ 45 m) will pass Earth at a nominal miss distance of 5.2 LD. Minimum miss distance 0.7 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2008+GD110+&orb=1>.

2104, Jan 2

Asteroid 54509 YORP (2000 PH5, H = 22.6 mag, D ≈ 100 m) will pass Earth at a nominal miss distance of 2.05 LD. Minimum miss distance 2.05 LD. 
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2000+PH5&orb=1>, <en.wikipedia.org/wiki/2000_PH5>.
See also: <neo.jpl.nasa.gov/news/news131.html>

2112, Dec 23

Asteroid 4660 Nereus (1982 DB, H = 18.2 mag, D ≈ 800 m, PHA) passed Earth at a nominal distance of 6.9 LD. Minimum distance 6.8 LD
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=1982+DB&orb=1>, <en.wikipedia.org/wiki/4660_Nereus >.
Ref:
- M. Brozovic, S.J. Ostro, L.A.M. Benner, et al., 2009, Icarus, 201, 153, "Radar observations and a physical model of asteroid 4660 Nereus, a prime space mission target." See: <adsabs.harvard.edu/abs/2009Icar..201..153B>.
- K. Kitazato, S. Abe, M. Ishiguro, et al., October 2012, American Astronomical Society, DPS meeting #44, #210.20, "Measuring the YORP effect of asteroid 4660 Nereus." See: <adsabs.harvard.edu/abs/2012DPS....4421020K>.
See also: 22 January 2002, 11 December 2021, 14 February 2060, 4 February 2071, and 4 February 2166.

2116, Feb 17

Asteroid 2012 DA14 (H = 24.1 mag, D ≈ 40 × 20  m), discovered on 23 February 2012 by the Spanish Observatorio Astronomico de la Sagra, will pass Earth at a nominal miss distance of 9.7 LD. Minimum miss distance 0.2 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2012+DA14&orb=1>,
<en.wikipedia.org/wiki/2012_DA14>,
17 February 1918, 19 August 2004, 16 February 2012, 15 February 2046, 15 February 2087.

2119, May 20

Asteroid 2004 KG1 (H = 24.0 mag, D ≈ 60 m) will pass Earth at a nominal miss distance of 1.3 LD. Minimum miss distance 0.2 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2004+KG1+&orb=1>.

2120, Apr 25

Asteroid 2011 DV (H = 20.7 mag, D ≈ 250 m, PHA) will pass Earth at a nominal miss distance of 3.7 LD. Minimum miss distance 0.3 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2011+DV+&orb=1>.

2122, Feb 8

Asteroid 2008 CE22 (H = 26.4 mag, D ≈ 20 m) will pass Earth at a nominal miss distance of 3.0 LD. Minimum miss distance 0.03 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2008+CE22+&orb=1>.
See also: 6 February 2008, 7 February 2066.

2123, Apr 30

Asteroid  69230 Hermes (1937 UB, H = 17.5 mag, D ≈ 1100 m, PHA) will pass Earth at a nominal miss distance of 7.4 LD. Minimum miss distance 4.9 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=1937+UB&orb=1>, <en.wikipedia.org/wiki/69230_Hermes>, 29 October 1914, 30 October 1937, 26 April 1942, 1 November 1954, 31 October 2086.

2124, Oct 25

Asteroid 2010 FN (H = 26.6 mag, D ≈ 20 m) will pass Earth at a nominal miss distance of 8.1 LD. Minimum miss distance 1.0 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2010+FN+&orb=1>.
See also: 24 October 2065.

2127, Apr 16

Asteroid 52768 (1998 OR2, H = 15.8 mag, D ≈ 2500 m, PHA) will pass Earth at a nominal miss distance of 6.6 LD. Minimum miss distance 6.5 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=1998+OR2&orb=1>.
See also: 16 April 2079.

2128, Mar 11

Asteroid 2008 ED8 (H = 24.0 mag, D ≈ 60 m) will pass Earth at a nominal miss distance of 1.1 LD. Minimum miss distance 0.7 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2008+ED8+&orb=1>.

2130, Jan 27

Asteroid  85182 (1991 AQ, H = 17.0 mag, D ≈ 1300 m, PHA) will pass Earth at a nominal miss distance of 4.1 LD. Minimum miss distance 4.1 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=1991+AQ&orb=1>.

2132, Apr 30

Asteroid 2011 JY1 (H = 24.4 mag, D ≈ 50 m) will pass Earth at a nominal miss distance of 1.2 LD. Minimum miss distance 1.0 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2011+JY1+&orb=1>.

2140, Dec 1

Asteroid 153201 (2000 WO107, H = 19.2 mag, D ≈ 500 m, PHA) will pass Earth at a nominal miss distance of 0.6 LD. Minimum miss distance 0.6 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2000+WO107&orb=1>.

2141, Feb 21

Asteroid 2012 DX (H = 27.1 mag, D ≈ 15 m) will pass Earth at a nominal miss distance of 9.2 LD. Minimum miss distance 0.1 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2012+DX+&orb=1>.

2141, May 8

Asteroid 2005 GE60 (H = 22.1 mag, D ≈ 140 m) will pass Earth at a nominal miss distance of 1.9 LD. Minimum miss distance 1.0 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2005+GE60+&orb=1>.

2146, Mar 23

Asteroid 2009 DO111 (H = 22.9 mag, D ≈ 90 m) will pass Earth at a nominal miss distance of 0.8 LD. Minimum miss distance 0.7 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2009+DO111+&orb=1>.

2148, Jan 22

Asteroid 85640 (1998 OX4, H = 21.0 mag, D ≈ 200 m, PHA) will pass Earth at a nominal miss distance of 0.8 LD. Minimum miss distance 0.8 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=1998+OX4&orb=1>.

2148, May 7

Asteroid 144898 (2004 VD17, H = 18.8 mag, D ≈ 600 m, PHA) will pass Earth at a nominal miss distance of 17.7 LD. Minimum miss distance 1.03 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2004+VD17&orb=1>, <en.wikipedia.org/wiki/(144898)_2004_VD17>.
Ref:
-  F. de Luise, D. Perna, E. Dotto, et al., 2007, Icarus, 191, 628, "Physical investigation of the potentially hazardous asteroid (144898) 2004 VD17." See: <adsabs.harvard.edu/abs/2007Icar..191..628D>.
See also: 7 November 2041.

2153, Apr 15

Asteroid 2004 HM (H = 23.1 mag, D ≈ 85 m, will pass Earth at  nominal miss distance of 4.1 LD. Minimum miss distance 0.2 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2004+HM+&orb=1>.

2156, Dec 16

Asteroid 2011 LT17 (H = 21.8 mag, D ≈ 145 m, PHA) will pass Earth at nominal miss distance of 1.0 LD. Minimum miss distance 1.0 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2011+LT17+&orb=1>.

2166, Feb 4

Asteroid 4660 Nereus (1982 DB, H = 18.2 mag, D ≈ 800 m, PHA) will pass Earth at 6.7 LD. Minimum miss distance 4.9 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=1982+DB&orb=1>, <en.wikipedia.org/wiki/4660_Nereus>.
Ref:
-  M. Brozovic, S.J. Ostro, L.A.M. Benner, et al., 2009, Icarus, 201, 153, "Radar observations and a physical model of asteroid 4660 Nereus, a prime space mission target." See: <adsabs.harvard.edu/abs/2009Icar..201..153B>.
See also 29 January 1900, 22 January 2002, 11 December 2021, 14 February 2060, 23 December 2112, and 4 February 2071.

2166, Oct 23

Asteroid 2004 FU4 (H = 18.4 mag, D ≈ 700 m, PHA) will pass Earth at a nominal miss distance of 17.7 LD. Minimum miss distance 1.0 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2004+FU4+&orb=1>.

2167, Apr 9

Asteroid 25143 Itokawa (1998 SF36, H = 19.2 mag, D = 535 × 29 × 209 m, M = 3.6 × 1010 kg, PHA) passed Earth at a nominal miss distance of 9.8 LD. Minimum miss distance 9.8 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=1998+SF36&orb=1>.
See also: 27 June 1905, 26 June 2004.

2168, Jan 31

Asteroid 2007 TU24 (H = 20.3 mag, D ≈ 250 m, PHA) will pass Earth at a nominal miss distance of 4.5 LD. Minimum miss distance 0.4 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2007+TU24+&orb=1>, <en.wikipedia.org/wiki/2007_TU24>.
See also: 29 January 2008.

2170, Nov 22

Asteroid 2004 XK3 (H = 24.4 mag, D ≈ 50 m) will pass Earth at a nominal miss distance of 2.5 LD. Minimum miss distance 0.7 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2004+XK3+&orb=1>.

2172, Aug 19

Asteroid 2010 FD7 (H = 22.1 mag, D ≈ 140 m, PHA) will pass Earth at a nominal miss distance of 5.7 LD. Minimum miss distance 0.4 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2010+FD7+&orb=1>.

2175, May 1

Asteroid  164121 (2003 YT1, H = 16.1 mag, D ≈ 2000 m, PHA) will pass Earth at a nominal miss distance of 6.3 LD. Minimum miss distance 5.8 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2003+YT1&orb=1>.
See also: 29 April 2073.

2175, Jun 13

Asteroid 152685 (1998 MZ, H = 19.3 mag, D ≈ 500 m, PHA) will pass Earth at a nominal miss distance of 11.4 LD. Minimum miss distance 0.48 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=1998+MZ&orb=1>.
See also: 17 June 2186.

2176, Apr 27

Asteroid 2012 HM, H = 24.1 mag, D ≈ 60 m) will pass Earth at a nominal miss distance of 6.0 LD. Minimum miss distance 0.2 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2012+HM&orb=1>.

2177, Mar 29

Asteroid 2006 VV2 (H = 16.8 mag, D ≈ 1500 m, PHA) will pass Earth at 12.42 LD. Minimum miss distance 12.36 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2006+VV2+&orb=1>.
See also: 31 March 2007.

2183, Jan 12

Asteroid 332446 (2008 AF4, H = 19.7 mag, D = 390 m, PHA) will pass Earth at a nominal miss distance of 3.6 LD. Minimum miss distance 0.9 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2008+AF4&orb=1>, <en.wikipedia.org/wiki/2008_AF4>.

2185, Mar 29

Asteroid 2009 FD (H = 22.1 mag, D ≈ 140 m) will pass Earth at a nominal miss distance of 5.5 LD. Minimum miss distance 0.006 LD (= 0.354 REarth from the geocenter).
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2009+FD+&orb=1>, <en.wikipedia.org/wiki/2009_FD>.
See also: <www.space.com/12645-asteroid-deflection-doomsday-earth-capability.html>.

2186,Jun 17

Asteroid 152685 (1998 MZ, H = 19.3 mag, D ≈ 500 m, PHA) will pass Earth at a nominal miss distance of 19.55 LD. Minimum miss distance 0.48 LD.  
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=1998+MZ&orb=1>.
See also: 13 June 2175.

2189, Nov 18

Asteroid 2009 WQ6 (H = 29.2 mag, D ≈ 5 m) will pass Earth at a nominal miss distance of 0.4 LD. Minimum miss distance 0.2 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2009+WQ6&orb=1>.
See also: 16 November 2009.

2190, Nov 22

Asteroid  2005 UL5 (H = 20.0 mag, D ≈ 350 m, PHA) will pass Earth at a nominal miss distance of 5.9 LD. Minimum miss distance 2.9 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2005+UL5+&orb=1>.
See also: 23 November 2200.

2192, Aug 21

Asteroid  137126 (1999 CF9, H = 17.9 mag, D ≈ 900 m, PHA) will pass Earth at a nominal miss distance of 5.0 LD. Minimum miss distance 4.9 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=1999+CF9&orb=1>.

2195, May 21

Asteroid 2010 JL88 (H = 26.8 mag, D ≈ 15 m) will pass Earth at a nominal miss distance of 8.0 LD. Minimum miss distance 0.5 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2010+JL88+&orb=1>.
See also: 17 May 2010.

2198, May 5

Asteroid 290772 (2005 VC, H = 17.4 mag, D ≈ 1300 m, PHA) will pass Earth at a nominal miss distance of 1.9 LD. Minimum miss distance 1.7 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2005+VC+&orb=1>.

2200, Nov 23

Asteroid 2005 UL5 (H = 20.0 mag, D ≈ 350 m, PHA) will pass Earth at a nominal miss distance of 7.7 LD. Minimum miss distance 0.3 LD.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=2005+UL5+&orb=1>.
See also: 22 November 2190.

 

2880, Mar 16

Asteroid 29075 (1950 DA = 2000 YK66, H = 17.0 mag, D ≈ 1.2-1.5 km, PHA) will pass Earth at a nominal distance of  0.76 LD and has a 1-in-300 chance of impacting.
See: <ssd.jpl.nasa.gov/sbdb.cgi?sstr=1950+DA+&orb=1>, <neo.jpl.nasa.gov/1950da/>, <en.wikipedia.org/wiki/(29075)_1950_DA>.
Ref:
-  J.D. Giorgini, S.J. Ostro, L.A.M. Benner, et al., 2002, Science, 296, 132, "Asteroid 1950 DA's encounter with Earth in 2880: physical limits of collision probability prediction." See: <adsabs.harvard.edu/abs/2002Sci...296..132G>;
- A.P.J. Abdul Kalam, President of India, 4 January 2003, Space Summit address to the 90th Indian Science Congress, "Vision for the global space community: prosperous, happy and secure planet earth." See: <neo.jpl.nasa.gov/1950da/1950DA_Kalam_90th_Indian_Congress.pdf>.
- K. Wong, 2003, Scientific American, "2880 asteroid impact simulation suggests tsunamis could hammer Atlantic coast." See: <www.scientificamerican.com/article.cfm?id=2880-asteroid-impact-simu>;
- S.N. Ward, E. Asphaug, 2003, Geophysical Journal International, 153, F6, "Asteroid impact tsunami of 2880 March 16." See: <adsabs.harvard.edu/abs/2003GeoJI.153F...6W>;
- S.J. Ostro, J.D. Giorgini, 2004, in: M.J.S. Belton, et al. (eds.), Mitigation of Hazardous Comets and Asteroids (Cambridge: CUP), p. 54, "The role of radar in predicting and preventing asteroid and comet collisions with Earth." See: <adsabs.harvard.edu/abs/2004mhca.conf...38O>;
- M.W. Busch, J.D. Giorgini, S.J. Ostro, et al., 2007, Icarus, 190, 608, "Physical modeling of near-Earth asteroid (29075) 1950 DA."  See: <adsabs.harvard.edu/abs/2007Icar..190..608B>.
See also: <www.scientificamerican.com/article.cfm?id=asteroid-impact-possible>.

External Links

Asteroid Impact & Deflection Assessment (AIDA) <www.esa.int/esaMI/NEO/SEMAWBTWT1H_0.html>
ANSMET <geology.cwru.edu/~ansmet/>
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Asiago DLR Asteroid Survey <dipastro.pd.astro.it/planets/adas/#team>
Association of Space Explorers <www.space-explorers.org/committees/NEO/neo.html>
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B612 Foundation <www.b612foundation.org/>
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DLR Institute of Planetary Research <www.dlr.de/pf/en/>
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ESA NEO Space Mission Studies <www.esa.int/Our_Activities/Technology/NEO>
ESA Space Situational Awareness <www.esa.int/ssa/neo>, <www.esa.int/Our_Activities/Operations/Near-Earth_Objects_-_NEO>
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IAF NEOs Technical Committee <www.iafastro.com/index.html?title=Committee_on_Near_Earth_Objects>
IAU Minor Planet Center <www.cfa.harvard.edu/iau/mpc.html>
IAU Meteor Data Center <www.astro.amu.edu.pl/~jopek/MDC2007/>
Impact Database <impacts.rajmon.cz/index.html>
IMPACTON <www.on.br/impacton/>
International Academy of Astronautics (IAA) <www.iaaweb.org/>
International Primitive Body Exploration Working Group <ipewg.caltech.edu/>
International Scientific Optical Network (ISON) <lfvn.astronomer.ru/report/0000029/index.htm>
KLENOT <www.klet.org/?stranka=klenot&menu_id=4&uroven=2>
La Sagra Sky Survey <lasagraskysurvey.org/>
Large Synoptic Survey Telescope <www.lsst.org/lsst>
LCOGT network <lcogt.net/>
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LPI <www.lpi.usra.edu/publications/slidesets/craters/crater_index.shtml>
Marco Polo-R <www.oca.eu/MarcoPolo-R/>
Meteoritical Society <www.meteoriticalsociety.org/>
The NASA All-sky Fireball Network <fireballs.ndc.nasa.gov/>
NASA Asteroid Initiative and Grand Challenge <www.nasa.gov/asteroidinitiative>
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NEOCam <neocam.ipac.caltech.edu/>
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NEOSSat <www.asc-csa.gc.ca/eng/satellites/neossat/>
NEO-WISE <neo.jpl.nasa.gov/stats/wise/>
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Pan-STARRS <pan-starrs.ifa.hawaii.edu/public/>
Planetary Data System <pds.nasa.gov/>
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Spaceguard Spain <www.spaceguardspain.org/>
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Spacewatch <spacewatch.lpl.arizona.edu/>
TOTAS <vmo.estec.esa.int/totas>
UAO-DLR Asteroid Survey (UDAS) <earn.dlr.de/udas/>
UN-COPUOS <www.oosa.unvienna.org/oosa/COPUOS/copuos.html>
Warm SPITZER NEO Survey <ssc.spitzer.caltech.edu/spitzermission/observingprograms/es/>

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Last updated:

7 October 2013