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: 12739 (of which 1224 are Junior members). Number of Active Individual and Junior Members in the IAU Directory: 12373.


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Name▼ Location NCA adherence
Tsiropoula, Georgia Greece Greece
TSUBOI, Masato Japan Japan
TSUCHIYA , Toshio Japan Japan
Tsuge, Kisetsu (Junior Member) Germany Germany
TSUJI, Takashi Japan Japan
TSUJIMOTO, Masahiro Japan Japan
TSUJIMOTO , Takuji Japan Japan
TSUKAGOSHI, Takashi Japan Japan
TSUMURA, Kohji Japan Japan
TSUNEMI, Hiroshi Japan Japan
TSUNETA, Saku Japan Japan
TSURU, Takeshi Japan Japan
Tsutsumi, Takahiro United States United States
Tsvetanov, Zlatan I. United States United States
Tsvetk'ov, Alexander Russian Federation Russian Federation
Tsvetkov, Dmitry Yu. Russian Federation Russian Federation
Tsvetkov, Tsvetan (Junior Member) Bulgaria Bulgaria
Tsvetkova, Svetla Valentinova Bulgaria Bulgaria
Tsygan, Anatolij I. Russian Federation Russian Federation
Tsygankov, Sergey Finland Finland
Tsymbal, Vadim V. Russian Federation Russian Federation
Tuccari, Gino Italy Italy
Tuchin, Andrey Georgievich Russian Federation Russian Federation
Tucker, Brad E Australia Australia
Tucker, Douglas Lee United States United States
Tucker, Wallace H. United States United States
Tuckey, Philip France France
Tudose, Valeriu Mihai Romania Romania
Tuffs, Richard J. Germany Germany
Tugay, Anatoliy V. Ukraine Ukraine
Tull, Robert G. United States United States
Tully, Richard Brent United States United States
Tummuangpak, Pimpunyawat Thailand Thailand
Tungalag, Namkhai Mongolia Mongolia
Turatto, Massimo Italy Italy
Turbet, Martin Nicolas France France
Turck-Chièze, Sylvaine France France
Turcu, Vlad Spiridon Romania Romania
Türler, Marc Switzerland Switzerland
Turner, David G. Canada Canada
Turner, Edwin L. United States United States
Turner, Jean L. United States United States
Turner, Kenneth C. United States United States
Turner, Michael S. United States United States
Turner, Nils H. United States United States
Turnshek, David A. United States United States
Turnshek, Diane United States United States
Turolla, Roberto Italy Italy
Turon, Catherine France France
Turrini, Diego Italy Italy
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