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: 12769 (of which 1224 are Junior members). Number of Active Individual and Junior Members in the IAU Directory: 12399.


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Name▼ Location NCA adherence
SubbaRao, Mark Upadhyayula United States United States
Šubr, Ladislav Czech Republic Czech Republic
Subrahmanya, C. R. India India
Subrahmanyan, Ravi India India
Subramaniam, Annapurni India India
Subramanian, Kandaswamy India India
Subramanian, Prasad India India
Subramanian, Smitha India India
SUBRAMANIAN, PRASANNA (Junior Member) India India
SUDA, Takuma Japan Japan
Sudar, Davor Croatia, the Republic of Croatia, the Republic of
Sudzius, Jokubas Lithuania Lithuania
SUEMATSU, Yoshinori Japan Japan
Suer, Terry-Ann (Junior Member) United States France
Suess, Steven T. United States United States
SUGAI, Hajime Japan Japan
SUGANUMA, Masahiro Japan Japan
SUGAWARA, Yasuharu Japan Japan
SUGIMOTO, Daiichiro Japan Japan
SUGINOHARA , Tatsushi Japan Japan
SUGITA, Seiji Japan Japan
SUGITANI , Koji Japan Japan
SUGIURA, Keisuke (Junior Member) Japan Japan
SUGIYAMA , Naoshi Japan Japan
Suh, Kyung-Won Korea, Rep of Korea, Rep of
Suková, Petra Czech Republic Czech Republic
Sule, Aniket Prakash India India
Suleimanov, Valery F. Russian Federation Russian Federation
Suleymanova, Svetlana Akramovna Russian Federation Russian Federation
Süli, Áron László Hungary Hungary
Sulis, Sophia (Junior Member) France France
Sullivan, Mark United Kingdom United Kingdom
Sullivan, III, Woodruff T. United States United States
SUMI, Takahiro Japan Japan
SUMIYOSHI, Kosuke Japan Japan
Summers, Frank United States United States
Summers, Hugh P. United Kingdom United Kingdom
Sun, Jiayi (Junior Member) United States Canada
Sun, Xiaohui China, Nanjing China, Nanjing
Sun, Xudong United States United States
SUN, Fuping China, Nanjing China, Nanjing
SUN, Mingguo (Junior Member) China, Nanjing China, Nanjing
SUN, Wei-Hsin China, Taipei China, Taipei
SUN, Xiaochun China, Nanjing China, Nanjing
SUN, Yisui China, Nanjing China, Nanjing
SUNADA, Kazuyoshi Japan Japan
Sundararajan, Pavithraa (Junior Member) Netherlands Netherlands
Sundin, Maria I. Sweden Sweden
Sundqvist, Jon O Belgium Belgium
SUNG, Hyun-Il Korea, Rep of Korea, Rep of
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