Division Meeting at the XXIX General Assembly:

Honolulu, USA, 7 and 10 August 2015


General Information

As it was announced earlier Division A, as all other IAU Divisions, will have a dedicated Division Meeting in Honolulu. Division Meeting is a purely scientific meeting covering all research fields relevant for our Division.

The Meeting is scheduled for Friday, August 7 and Monday, August 10 (see Science Program of the IAU XXIX General Assembly). All Division Meetings will run in parallel, but no other meetings (scientific or business) will be scheduled for these time slots.


The Business Sessions of Commissions and Working Groups of Division A as well as the Business Session of the Division A itself are scheduled on the days around the Division Meeting: 5, 6, 11 and 12 August 2015.


Scientific Organizing Committee

The SOC of the Division Meeting consists of the members of the Steering Committee:

Anthony G.A. Brown (co-chair), Nicole Capitaine, Sylvio Ferraz-Mello, Catherine Y. Hohenkerk, Mizuhiko Hosokawa, Cheng-Li Huang, Sergei A. Klioner (co-chair), Jacques Laskar, Anne Lemaitre, Dennis D. McCarthy, François Mignard, Alessandro Morbidelli, Dimitri Pourbaix, Michael H. Soffel, Susan G. Stewart, Norbert Zacharias


Scientific Program

version of 1 June 2015


Invited presentations are shown in boldface.


Friday, 7 August 2015

Session I: 10:30 - 12:30  The field of Fundamental Astronomy
chair: Anthony Brown

10:30 - 10:35 An informal introduction of the first Division Meeting, Sergei Klioner
10:35 - 10:55 Origin of the great dichotomy of the Solar System: small terrestrial embryos and massive giant planet cores, Alessandro Morbidelli
10:55 - 11:15 URAT and the celestial reference frame, Norbert Zacharias
11:15 - 11:35 Hubble Space Telescope Fine Guidance Sensor Interferometric Parallaxes: How, Why, and What, Fritz Benedict
11:35 - 11:55 Constraint on the earth density near core-mantle boundary by free core nutation, Cheng-Li Huang
11:55 - 12:15 The ICRF-3: Status, Plans, and Multi-wavelength; Progress on the next generation Celestial Reference Frame, Christopher Jacobs
12:15 - 12:25 VGOS – the VLBI Global Observing System of the IVS, Rüdiger Haas

12:30 - 14:00 lunch

Session II: 14:00 - 15:30  Modern astrometry
chair: Norbert Zacharias

14:00 - 14:20 HST high-precision proper motions of globular clusters, Andrea Bellini
14:20 - 14:40 The Pan-STARRS Astrometric Survey, Eugene Magnier
14:40 - 15:00 Absolute astrometry with Pan-STARRS, Valeri Makarov
15:00 - 15:20 Infrared Space Astrometry missions: JASMINE, Naoteru Gouda
15:20 - 15:30 The NSDB database of astrometric observations of the natural planetary satellites and the Gaia astrometric reference catalogue, Jean-Eudes Arlot

15:40 - 16:00 coffee break

Session III: 16:00 - 17:50 Gaia mission status and first data processing results I
chair: Sergei Klioner

16:00 - 16:30 Gaia mission status, Timo Prusti
16:30 - 17:00 Gaia data processing status after the first year of the survey, Anthony Brown
17:00 - 17:30 Gaia astrometric data reduction one year into science operations, Uwe Lammers
17:30 - 17:50 First photometry results, Anthony Brown

17:50 - 18:00 coffee break

Session IV: 18:00 - 19:30 Gaia mission status and first data processing results II
chair: Sergei Klioner

18:00 - 18:20 First results from the Gaia Radial Velocity Spectrometer, George Seabroke 
18:20 - 18:40 Gaia Science Alerts: Early Validation Phase Data from Gaia, Nic Walton 
18:40 - 19:00 Solar system objects, and others peculiar bodies, with Gaia, Daniel Hestroffer
19:00 - 19:20 The variability analysis of the Gaia data, Laurent Eyer 
19:20 - 19:30 Aligning VLBI and Gaia Extragalactic Celestial Reference Frames: source selection scenario, Geraldine Bourda


Monday, 10 August 2015

Session V: 08:30 - 10:00 Dynamical astronomy in the solar system and beyond
chair: Alessandro Morbidelli

08:30 - 08:50 Shadowing Lemma and Chaotic Orbit Determination, Andrea Milani
08:50 - 09:10 Galactic dynamics, Paul McMillan
09:10 - 09:20 Improvement of accuracy of planetary ephemerides by the example of EPM, Pitjeva
09:20 - 09:30 Recent developments in INPOP planetary ephemerides, Agnes Fienga
09:30 - 09:40 Improved orbits of Saturn and Jupiter from the Cassini and Juno missions, William Folkner
09:40 - 09:50 Natural Satellite Ephemerides at JPL, Robert Jacobson
09:50 - 10:00 Frequency analysis and representation of slowly diffusing solutions, Yanning Fu

10:00 - 10:30 coffee break

Session VI: 10:30 - 12:30 Earth rotation and geodynamics
chair: Cheng-Li Huang

10:30 - 10:50 Mass Transport and Dynamics in the Earth System: Unsolved Scientific Questions and Observational Requirements, Richard Gross
10:50 - 11:10 Development of a new model for short period ocean tidal variations of Earth rotation, Harald Schuh
11:10 - 11:30 Recent developments in the theory of the Earth’s precession and nutation, Jose Manuel Ferrándiz
11:30 - 11:40 On the use of ring laser gyroscope data for monitoring diurnal and semidiurnal signals in Earth rotation, Aleksander Brzezinski
11:40 - 11:50 The statistical properties and possible causes of polar motion prediction errors, Wieslaw Kosek
11:50 - 12:00 Effects of density stratification on the frequencies of the inertial modes of the Earth’s fluid core, Behnam Seyed-Mahmoud
12:00 - 12:10 Earth orientation parameters: excitation by atmosphere, oceans and geomagnetic jerks, Jan Vondrak
12:10 - 12:20 Medium- and Long-term Prediction of LOD Change by the Leap-step Autoregressive Model, Qijie Wang 
12:20 - 12:30 The analysis of monthly STRF and EOPs based on CERS results, Xiaoya Wang

12:30 - 14:00 lunch

Session VII: 14:00 - 15:30 Space-Time Reference Frames
chair: Catherine Hohenkerk

14:00 - 14:20 Recent progress in time and frequency metrology, Felicitas Arias
14:20 - 14:30 Considerations for ICRF-3, Chopo Ma
14:30 - 14:40 Revisiting the VLBA Calibrator Surveys for ICRF3, David Gordon
14:40 - 14:50 A Complete Bank of Optical Images of the ICRF QSOs, Alexandre Andrei
14:50 - 15:00 The third release of the Large Quasar Astrometric Catalogue (LQAC-3), Jean Souchay
15:00 - 15:10 UTC(SU) and EOP(SU) – the only legal reference frames of Russian Federation, Nikolay Koshelyaevsky
15:10 - 15:20 Synchronization of Geodetic Observatories thanks to Time Transfer by Laser Link, Alexandre Belli
15:20 - 15:30 Selecting radio sources for constructing a more uniform and stable reference frame, Jia-Cheng Liu

15:30 - 16:00 coffee break

Session VIII: 16:00 - 18:00 Synergies across astronomy
chair: Anne Lemaitre

16:00 - 16:20 The Galaxy’s clocks: Time standards and gravitational-wave searches with pulsar timing arrays, Ryan Shannon
16:20 - 16:40 Masses and Orbital Parallax: What resolved double-lined spectroscopic binaries can do for you, Brian Mason
16:40 - 17:00 Using accurate phase space coordinates of ~100,000 halo field stars to constrain the Milky Way halo, Monica Valluri
17:00 - 17:10 Test of the density-wave theory using VLBI astrometry results, Nobuyuki Sakai
17:10 - 17:20 Synergies in Astrometry: Predicting Navigational Error of Visual Binary Stars, Susan Stewart
17:20 - 17:30 Using quasar physics to improve the celestial reference frame, Stanislav Shabala
17:30 - 17:40 Effect of positional instabilities of the reference radio sources on estimation of the relativistic parameter γ, Oleg Titov
17:40 - 17:50 On Constraining the Kerr Metric of the Massive Black Hole in the Galactic Center through the Relativistic Orbital Motion of the Closest Star: Full General Relativistic Treatment, Zhang Fupeng
17:50 - 18:00 The application of GNSS in the near-Earth navigation of China’s lunar probe CE-5T1, Yong Huang

Poster presentations

The IAU Division A Working Group on the Third Realization of the ICRF: Background, Goals, Plans, Ralph Gaume The Reversal of Time Sequence and abrupt direction change of Astrophysical Jets, Biping Gong Ultra-rapid earth rotation determination with VLBI during CONT11 and CONT14, Rüdiger Haas Final Update of the IAU Commission 4 Working Group on Standardizing Access to Ephemerides and File Format Specification, James Hilton IAU Working Group for Numerical Standards of Fundamental Astronomy (NSFA): Past Efforts and Future Endeavors, Brian Luzum The application of Scaled Sensitivity Matrix method on high-frequency Earth orientation variation, Weijing Qu Gaia Reference frame determination: the AVU/GSR pipeline, Alberto Vecchiato Hydrological signal in polar motion excitation from a combination of geophysical and gravimetric series, Małgorzata Wińska LOTT: A new small telescope to monitor lunar orientation parameters, Chengli Huang Lunar Radio_phase Ranging in Chinese Lunar Lander Mission for Astrometry, Jinsong Ping Estimating the velocity of the Solar barycenter, Minghui Xu

SPICE as an IAU Recommendation for Planetary Ephemerides, Charles Acton The XPM2 Catalogue, Volodymyr Akhmetov Studying impacts of strategy choices concerning the Celestial Reference Frame on the estimates of nutation time series during geodesic VLBI Analysis, César Gattano Status of the JPL Horizons Ephemeris System, Jon Giorgini SOFA 2015: Authoritative Tools & Standard Models, Catherine Hohenkerk Coordinate System Issues in Binary Star Computations, George Kaplan Correction to polar motion data due to the model of geocenter motion determined from SLR, GNSS and GRACE observations, Wieslaw Kosek New determination of astrometric parameters of MSP J1939+2134 with CVN, Liang Li Derivation of stellar parameters from Gaia RVS spectra with prediction uncertainty using Generative Artificial Neural Networks (GANNs), Minia Manteiga Earth's Variable Rotation from 750BC to present, Leslie Morrison Estimation of Solar Angular Momentum from Lense-Thirring Precession of Mercury, Ryan Park Monitoring spectroscopic binaries in anticipation of Gaia, Dimitri Pourbaix Development of Broadband VLBI System and its Application to T&F Transfer, Mamoru Sekido Long term monitoring of extragalactic sources in the framework of the Gaia ESA mission, François Taris New members in TW Hydrae association, Ramachrisna Teixeira Progress in Research on Diurnal and Semidiurnal Earth Rotation Change, Xueqing Xu JASMINE data analysis, Yoshiyuki Yamada
Analytical dynamics models for space missions around minor bodies, Josué Cardoso dos Santos Night sky brightness at Kottamia observatory site using DMSP satellite images, Ahmed Osman The physical applicability conditions of the Bjerknes equation in dynamics of planetary systems, Murat Zhussupov Is the Fine-Structure Constant Inconstant? Le Thong Establishing a Network of faint DA white dwarfs as Spectrophotometric Standards, Abhijit Saha Testing methods for accurate hydroxyl maser astrometry at low frequencies, Gabor Orosz Utilizing the Lunar Laser Ranging datasets alongside the radioscience data from the Lunar Reconnaissance Orbiter to improve the dynamical model of the Moon, Vishnu Viswanathan The Sequential Evolution of Universes Based on Fundamental Forces, Catherine Derow Does the Newtonian Gravity "Constant" G Vary? Peter Noerdlinger

Business Sessions of the Division A Commissions and Working Groups at the XIX General Assembly in Honolulu


After a consultation with the Commisison Presidents and the Chairs of the Working Groups the following time schedule of the Business Sessions was compiled:

date time title room convener
5 Aug 09:00 - 10:00 WG Natural Planetary Satellites 326A Jean-Eudes Arlot

10:30 - 12:30 WG Cartographic Coordinates & Rotational Elements 326A Brent Archinal

14:00 - 18:00 Commission 8 / A1 Astrometry 326A Norbert Zacharias
6 Aug 08:00 - 12:30 WG Third Realisation of International Celestial Reference Frame 326A Christopher Jacobs

13:30 - 15:30 Commission 31 Time 326A Mizuhiko Hosokawa

16:00 - 18:00 WG Nominal Units for Stellar & Planetary Astronomy 326A Eric Mamajek
11 Aug 08:00 - 09:00 Commission 4 Ephemerides 326A Catherine Hohenkerk

09:00 - 10:00 Commission X2 Solar system ephemerides
326A Andrea Milani

10:30 - 12:30 Commission 7 / A4 Celestial Mechanics & Dynamical Astronomy 326A Alessandro Morbidelli

14:00 - 15:30 Business Meeting of Division A 318A Sergei Klioner

16:00 - 17:00 Commission A3 Fundamental Standards
326A Catherine Hohenkerk

17:00 - 18:00 WG Theory of Earth Rotation 326A Jose Manuel Ferrándiz
12 Aug 10:30 - 12:30 Commission 19 / A2 Rotation of the Earth 326A Cheng-Li Huang

14:00 - 15:00 WG Standards of Fundamental Astronomy (SOFA) 326A Catherine Hohenkerk

16:00 - 17:00 WG Numerical Standards in Fundamental Astronomy 326A Brian Luzum


All Sessions (except for the Business Session of Division A) will be organized in Room 326A of the Hawaii Convention Center. The room will be set theater-style for 50+ attendees. A beamer, screen and wireless Internet connection will be available.