Individual and Junior Members

Professional scientists whose research is directly relevant to some branch of astronomy are eligible to apply as Individual Members. Individual Members are, normally, admitted by the Executive Committee on the proposal of a National Member.

Junior scientists who have completed their PhD studies between 2015 and 2020 and who are in the initial phase of the career of a professional researcher in some branch of astronomy or a related field may be admitted to the Union by the Executive Committee as Junior Members, for a period not exceeding 6 years.

Individual and Junior Members listed in the IAU Directory have a valid, public email, and are affiliated to at least one Division. They are labeled as "Active Members". For corrections and updates, please contact Any members remaining Inactive for more than 3 years will be removed from the IAU lists.

Additionally, while only Active Members are listed in the IAU Directory, you may still search for Active, Inactive or Deceased Members in the search field to your right.

For gender statistics click here.

Total number of IAU Individual and Junior members: 12754 (of which 1224 are Junior members). Number of Active Individual and Junior Members in the IAU Directory: 12383.


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Name▼ Location NCA adherence
Tisserand, Patrick France France
Tisserand , Patrick Australia Australia
Title, Alan Morton United States United States
Titov, Dmitrij V. Netherlands Netherlands
Titov, Oleg A. Australia Australia
Titov, Vladimir Borisovich Russian Federation Russian Federation
Tiwari, Prabhakar (Junior Member) India Israel
Tjus, Julia Germany Germany
Tkachenko, Alexey Yu. Russian Federation Russian Federation
Tkachenko, Andrii Belgium Belgium
Tkachenko, Mariia G. (Junior Member) Ukraine Ukraine
Tkachenko, Roman (Junior Member) Russian Federation Russian Federation
Tlatov, Andrej G. Russian Federation Russian Federation
Tlatova, Kseniia Andreevna (Junior Member) Russian Federation Russian Federation
TOBA, Yoshiki Japan Japan
Tobias, Steven M. United Kingdom United Kingdom
Tobin, John J United States United States
TODA, Kouichi Japan Japan
Todorović, Nataša Serbia, Republic of Serbia, Republic of
Todt, Helge Germany Germany
Toffolatti, Luigi Spain Spain
Toft, Sune Denmark Denmark
Tohline, Joel Edward United States United States
Tokarev, Yurij V. Russian Federation Russian Federation
Tokovinin, Andrei A. Chile Chile
TOKUDA, Kazuki Japan Japan
Tokunaga, Alan Takashi United States United States
Tolbert, Charles R. United States United States
Toledo-Redondo, Sergio Spain Spain
Toller, Gary N. United States United States
Tollerud, Erik Jon United States United States
Tolstoy, Eline Netherlands Netherlands
Tomasella, Lina Italy Italy
Tomasi, Maurizio Italy Italy
Tombesi, Francesco Italy Italy
Tomczak, Michał Poland Poland
TOMIDA, Kengo Japan Japan
TOMINAGA, Nozomu Japan Japan
TOMINAGA, Ryosuke T. (Junior Member) Japan Japan
TOMISAKA, Kohji Japan Japan
TOMITA, Akihiko Japan Japan
Tommei, Giacomo Italy Italy
Tomova, Mima Todorova Bulgaria Bulgaria
TONG, Minglei China, Nanjing China, Nanjing
Tonini, Chiara Australia Australia
Tonry, John United States United States
Toomre, Alar United States United States
Toomre, Juri United States United States
Toonen, Silvia United Kingdom Netherlands
Topal, Selcuk Turkey Turkey
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