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 10 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.

Total number of IAU Individual and Junior members: 14106 (of which 719 Junior members). Number of Active Individual and Junior Members in the IAU Directory: 11606.


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Name▼ Location NCA adherence
Chernov, Sergey Russian Federation Russian Federation
Chernyakova, Maria Ireland Ireland
Chertok, Ilya M. Russian Federation Russian Federation
Chesley, Steven R. United States United States
Cheung, Chi (Teddy) C United States United States
Cheung, Sze-leung Thailand Japan
Chevalier, Roger A. United States United States
Chevrel, Serge France France
Chhotray, Atul (Junior Member) Netherlands Netherlands
Chian, Abraham Chian-Long Brazil Brazil
Chiang, Hsin Cynthia Canada South Africa
CHIANG, Lung-Yih China, Taipei China, Taipei
Chiappetti, Lucio Italy Italy
Chiappini, Cristina Germany Germany
Chiar, Jean E United States United States
Chiavassa, Andrea France France
CHIBA , Masashi Japan Japan
CHIBA , Takeshi Japan Japan
Chibueze, James Okwe South Africa South Africa
Chies Santos, Ana L. Brazil Brazil
CHIHARA, Hiroki Japan Japan
CHIKADA , Yoshihiro Japan Japan
CHIKAWA , Michiyuki Japan Japan
CHIN, Yi-nan China, Taipei China, Taipei
Chinarova, Lidiia L. Ukraine Ukraine
Chincarini, Guido L. Italy Italy
Chini, Rolf Germany Germany
Chinnici, Ileana Italy Italy
Chiosi, Cesare S. Italy Italy
Chiruta, Ciprian Romania Romania
Chitre, Shashikumar M. India India
CHIUEH , Tzihong China, Taipei China, Taipei
Chizek Frouard, Malynda R United States United States
Cho, Hyejeon (Junior Member) Korea, Rep of Korea, Rep of
CHO, Jungyeon Korea, Rep of Korea, Rep of
CHO, Kyung Suk Korea, Rep of Korea, Rep of
CHO, Se Hyung Korea, Rep of Korea, Rep of
Chochol, Drahomir Slovakia Slovakia
Chodas, Paul Winchester United States United States
Chodorowski, Michał Jacek Poland Poland
CHOE, Gwangson Korea, Rep of Korea, Rep of
Choi, Go-Eun (Junior Member) Korea, Rep of Korea, Rep of
CHOI, Chul-Sung Korea, Rep of Korea, Rep of
CHOI, Joon-Young Korea, Rep of Korea, Rep of
CHOI, Kyu Hong Korea, Rep of Korea, Rep of
CHOI, Minho Korea, Rep of Korea, Rep of
CHOI, Young-Jun Korea, Rep of Korea, Rep of
Chomiuk, Laura United States United States
Chornogor, Svitlana Ukraine Ukraine
CHOU, Dean-Yi China, Taipei China, Taipei
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