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: 13563 (of which 533 Junior members). Number of Active Individual and Junior Members in the IAU Directory: 11068.


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Name▼ Location NCA adherence
Sefako, Ramotholo R. South Africa South Africa
Šegan, Stevo D. Serbia, Republic of Serbia, Republic of
Seggewiss, Wilhelm Germany Germany
Seghouani, Nassim Algeria Algeria
Ségransan, Damien Switzerland Switzerland
Segura, Antigona Mexico Mexico
Seidelmann, P. Kenneth United States United States
Seielstad, George A. United States United States
Seifert, Walter Germany Germany
Seigar, Marc S. United States United States
Seimenis, John Greece Greece
Sein-Echaluce, M. Luisa Spain Spain
Seitz, Florian Germany Germany
Seitz, Manuela Germany Germany
Seitzer, Patrick United States United States
Sekanina, Zdenek United States United States
Sekeráš, Matej Slovakia Slovakia
Sekhar, Aswin Norway United Kingdom
SEKI, Munezo Japan Japan
SEKIDO, Mamoru Japan Japan
SEKIGUCHI, Kazuhiro Japan Japan
SEKIGUCHI, Tomohiko Japan Japan
SEKIMOTO, Yutaro Japan Japan
Selam, Selim O. Turkey Turkey
Selhorst, Caius Lucius Brazil Brazil
Selim, Hadia Hassan Egypt Egypt
Ibrahim M Selim, Ibrahim M Egypt Egypt
Sellgren, Kristen United States United States
Sellwood, Jerry A. United States United States
Selvelli, Pierluigi Italy Italy
Sembach, Kenneth R. United States United States
semeida, mohamed ahmed Egypt Egypt
Semelin, Benoit France France
Semenko, Eugene A. Russian Federation Russian Federation
Semenov, Dmitry A. Germany Germany
Semerák, Oldrich Czech Republic Czech Republic
Semkov, Evgeni Hristov Bulgaria Bulgaria
Sen, Asoke Kumar India India
Sengbusch, Kurt Von Germany Germany
Sengupta, Sujan K. India India
SEO, Haingja Korea, Rep of Korea, Rep of
SEON, Kwang il Korea, Rep of Korea, Rep of
Sequeiros, Juan Spain Spain
Serabyn, Eugene United States United States
Serber, Alexander V. Russian Federation Russian Federation
Sergeev, Aleksandr V. Ukraine Ukraine
Sergeev, Sergey G. Russian Federation Russian Federation
Sergijenko, Olga Ukraine Ukraine
Sergis, Nick Greece Greece
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