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: 14106 (of which 719 Junior members). Number of Active Individual and Junior Members in the IAU Directory: 11606.


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Name▼ Location NCA adherence
ISHIYAMA, Tomoaki Japan Japan
ISHIZAKA , Chiharu Japan Japan
ISHIZUKA , Toshihisa Japan Japan
Isik, Emre Germany Turkey
Isliker, Heinz Greece Greece
Ismail, Mohamed Nader Egypt Egypt
Ismayilov, Nariman Zeynalabdi Azerbaijan, Republic of Azerbaijan, Republic of
Israel, Frank P. Netherlands Netherlands
Israel, Gian Luca Italy Italy
Israel, Werner Canada Canada
Israelian, Garik Spain Spain
Istrate, Alina G. (Junior Member) Netherlands Netherlands
ITA, Yoshifusa Japan Japan
ITO, Takashi Japan Japan
ITOH, Naoki Japan Japan
ITOH, Yoichi Japan Japan
ITOH, Yousuke Japan Japan
ITOH , Masayuki Japan Japan
Ivanchik, Alexandre Vladimirovich Russian Federation Russian Federation
Ivanov, Dmitrii Russian Federation Russian Federation
Ivanov, Evgenij V. Russian Federation Russian Federation
Ivanov, Pavel Borisovich Russian Federation Russian Federation
Ivanov, Vsevolod V. Russian Federation Russian Federation
Ivanova, Natalia Canada Canada
Ivanova, Oleksandra Ukraine Ukraine
Ivanova, Violeta Georgieva Bulgaria Bulgaria
Ivans, Inese United States United States
Ivantsov, Anatoliy Turkey Turkey
Ivchenko, Vasily Ukraine Ukraine
Ivezic, Zeljko United States United States
Ivison, Robert J. United Kingdom United Kingdom
IWAI, Kazumasa Japan Japan
IWAMOTO, Nobuyuki Japan Japan
IWAMURO , Fumihide Japan Japan
IWASAKI , Kyosuke Japan Japan
IWATA , Ikuru United States United States
IWATA , Takahiro Japan Japan
IYE, Masanori Japan Japan
Iyer, Balasubramanian R. India India
Izidoro Ferreira da Costa, André Brazil Brazil
Izmailov, Igor Samatovich Russian Federation Russian Federation
Izotov, Yuri Ukraine Ukraine
Izotova, Iryna Yu. Ukraine Ukraine
IZUMI, Kiwamu Japan Japan
IZUMIURA, Hideyuki Japan Japan
Izzard, Robert George United Kingdom United Kingdom
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