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: 12737 (of which 1224 are Junior members). Number of Active Individual and Junior Members in the IAU Directory: 12372.


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Name▼ Location NCA adherence
Uscanga, Lucero Mexico Mexico
Usenko, Igor Ukraine Ukraine
User, Fake United States United States
Usher, Peter D. United States United States
Uslenghi, Michela Clelia Angela Italy Italy
Uson, Juan M. France France
Usoskin, Ilya G. Finland Finland
Usov, Vladimir V. Israel Israel
Usowicz, Jerzy Bogdan Poland Poland
USUDA, Tomonori United States United States
USUDA-SATO, Kumiko Japan Japan
USUI, Fumihiko Japan Japan
Utrobin, Victor P. Russian Federation Russian Federation
UTSUMI , Kazuhiko Japan Japan
Uttley, Philip Netherlands Netherlands
Uytterhoeven, Katrien Spain Spain
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