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
YASUTAKE, Nobutoshi Japan Japan
YOICHIRO , Suzuki Japan Japan
YOKOYAMA, Jun'ichi Japan Japan
YONETOKU, Daisuke Japan Japan
YOSHIDA, Haruo Japan Japan
YOSHIDA, Hiroshi Japan Japan
YOSHIDA , Atsumasa Japan Japan
YOSHIDA , Shigeomi Japan Japan
YOSHII, Yuzuru Japan Japan
YOSHIKAWA, Kohji Japan Japan
YOSHIKAWA, Makoto Japan Japan
YOSHINO, Kouichi Japan Japan
YAMASAKI , Noriko Y. Japan Japan
YAMAUCHI, Aya Japan Japan
YASUI, Chikako Japan Japan
YUI, Yukari Y. Japan Japan
YUMIKO , Oasa Japan Japan
YABUTA, Hikaru Japan Japan
YOSHIDA, Fumi Japan Japan
YASUI, Minami Japan Japan
YOON, Tae-Seog Korea, Rep of Korea, Rep of
YU, Dae Jung Korea, Rep of Korea, Rep of
YANG, Jongmann Korea, Rep of Korea, Rep of
YI, Yu Korea, Rep of Korea, Rep of
YOON, Suk-Jin Korea, Rep of Korea, Rep of
YI, Sukyoung Ken Korea, Rep of Korea, Rep of
YANG, Hong-Jin Korea, Rep of Korea, Rep of
YIM, Kijeong Korea, Rep of Korea, Rep of
YUN, Hong-Sik Korea, Rep of Korea, Rep of
YOON, Sung-Chul Korea, Rep of Korea, Rep of
YUN, Youngjoo Korea, Rep of Korea, Rep of
YIM, Hong Suh Korea, Rep of Korea, Rep of
Yusof, Norhasliza Malaysia Malaysia
Yam Gamboa, Joel Omar Mexico Mexico
Ye, Haoyang (Junior Member) Netherlands Netherlands
Yang, Guang (Junior Member) Netherlands Netherlands
Yi, Shuxu (Junior Member) Netherlands Netherlands
Yun, Joao L. Portugal Portugal
Yushkin, Maxim V. Russian Federation Russian Federation
Yakunin, Ilya Russian Federation Russian Federation
Yakovleva, Valerija A. Russian Federation Russian Federation
Yungelson, Lev R. Russian Federation Russian Federation
Yakovlev, Dmitrij G. Russian Federation Russian Federation
Yepes, Gustavo Spain Spain
Yang, Sheng (Junior Member) Sweden Sweden
Yang, Jun Sweden Sweden
Yüce, Kutluay Turkey Turkey
Yakut, Kadri Turkey Turkey
Yelkenci, Korhan Fuat Turkey Turkey
YAZ GÖKÇE, Esma Turkey Turkey
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