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 2014 and 2019 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 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 members:13661 (of which 534 Junior members). Number of Active Individual and Junior Members in the IAU Directory: 11123.


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Name▼ Location NCA adherence
Ianna, Philip A. United States United States
Iannini, Gualberto, Deceased (-2012) Argentina
Ibadinov, Khursand I. Tajikistan Tajikistan
Ibadov, Subhon Tajikistan Tajikistan
Ibanez, S. Miguel H. Venezuela Venezuela
Ibanoglu, Cafer Turkey Turkey
Ibarra-Medel, Hector Javier (Junior Member) Mexico Mexico
Ibata, Rodrigo A France France
Ibbetson, Peter Aaron (Inactive) Israel Israel
Iben Jr, Icko United States United States
Ibrahim, Ahmed Hafez Mohammed (Junior Member) Egypt Egypt
Ibrahim, Alaa I. United States United States
Ibrahim, Jorga (Inactive) Indonesia Indonesia
Ibrahim, Makram Ibrahim Khalil Egypt Egypt
Ibrahim, Zainol Abidin Malaysia Malaysia
Ibrahimov, Mansur Russian Federation Russian Federation
ICHIKAWA , Shin-ichi Japan Japan
ICHIKAWA , Takashi Japan Japan
ICHIMARU, Setsuo Japan Japan
ICHIMOTO, Kiyoshi Japan Japan
Icke, Vincent Netherlands Netherlands
Idiart, Thais E. Brazil Brazil
Idlis, Grigorij, Deceased (1927-2010) Russian Federation
IEVA, SIMONE (Junior Member) Italy Italy
Iglesias, Francisco Andres (Junior Member) Argentina Argentina
Ignace, Richard United States United States
Ignjatovi'c, Ljubinko M. Serbia, Republic of Serbia, Republic of
IGUCHI, Osamu Japan Japan
IGUCHI, Satoru Japan Japan
Iijima, Takashi Italy Italy
IIJIMA, Shigetaka, Deceased (1920-) Japan
IKEDA, Norio (Inactive) Japan Japan
IKEUCHI , Satoru Japan Japan
Ikhsanov, Nazar Robertovich Russian Federation Russian Federation
Ikhsanov, Robert N. Russian Federation Russian Federation
Ikhsanova, Vera N. (Inactive) Russian Federation Russian Federation
IKOMA, Masahiro Japan Japan
Ikonnikova, Natalia Russian Federation Russian Federation
IKUTA, Chisato Japan Japan
Ilić, Dragana Serbia, Republic of Serbia, Republic of
Iliev, Ilian Khristov Bulgaria Bulgaria
Iliev, Ilian T United Kingdom United Kingdom
Iliev, Lubomir (Junior Member) Bulgaria Bulgaria
Ilin, Alexey E. (Inactive) Russian Federation Russian Federation
Ilin, Gennadii Nikolaevich Russian Federation Russian Federation
Il'in, Vladimir Borisovich Russian Federation Russian Federation
Ill, Marton, Deceased (1930-2015) Hungary
Illarionov, Andrei F. (Inactive) Russian Federation Russian Federation
Illes, Almar Erzsebet (Inactive) Hungary Hungary
Illing, Rainer M.E. United States United States
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