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
Ilyin, Ilya V. Germany Germany
IM, Myungshin Korea, Rep of Korea, Rep of
IMADA, Shinsuke Japan Japan
IMAI, Hiroshi Japan Japan
Imamura, James United States United States
IMANISHI, Masatoshi Japan Japan
Imbert, Maurice France France
Imbroane, Alexandru Romania Romania
Immer, Katharina (Junior Member) Netherlands Netherlands
Impellizzeri, Caterina Maria Violette Netherlands Netherlands
Impey, Christopher David United States United States
INADA, Naohisa Japan Japan
İnam, Sitki Cagdas Turkey Turkey
INATANI, Junji Japan Japan
Indriolo, Nicholas United States United States
Infante, Leopoldo Chile Chile
Inglis, Michael United States United States
INOUE, Akio Japan Japan
INOUE, Hajime Japan Japan
INOUE, Kaiki Taro Japan Japan
INOUE, Makoto China, Taipei China, Taipei
INOUE, Takeshi Japan Japan
Inserra, Cosimo United Kingdom United Kingdom
Intema, Huib T (Junior Member) Netherlands Netherlands
in't Zand, Johannes J.M. Netherlands Netherlands
INUTSUKA, Shu-ichiro Japan Japan
Ioannou, Zach Oman AA-Country unknown
Iodice, Enrichetta Italy Italy
IOKA, Kunihito Japan Japan
Ioppolo, Sergio Denmark United Kingdom
Iorio, Lorenzo Italy Italy
IP, Wing-Huen China, Taipei China, Taipei
Ipatov, Aleksandr V. Russian Federation Russian Federation
Ipatov, Sergei I. Russian Federation Russian Federation
Ipser, James R. United States United States
Irawati, Puji Thailand Thailand
Irbah, Abdanour France France
Ireland, Michael James Australia Australia
Iro, Nicolas Austria Austria
Iršič, Vid (Junior Member) United Kingdom Slovenia, the Republic of
Irvine, William M. United States United States
Irwin, Alan W. Canada Canada
Irwin, Judith Canada Canada
Irwin, Michael John United Kingdom United Kingdom
Irwin, Patrick G.J. United Kingdom United Kingdom
Isaak, Kate G. Netherlands Netherlands
Ishchenko, Maryna Ukraine Ukraine
ISHIDA, Manabu Japan Japan
ISHIDA, Toshihito Japan Japan
ISHIGURO, Masateru Korea, Rep of Korea, Rep of
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