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: 12776 (of which 1224 are Junior members). Number of Active Individual and Junior Members in the IAU Directory: 12403.


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Name Location NCA adherence▼
YUJI , Ikeda Japan Japan
YUMIKO , Oasa Japan Japan
YASUDA, Naoki Japan Japan
YUI, Yukari Y. Japan Japan
YAMADA, Yoshiyuki Japan Japan
YUTAKA , Shiratori Japan Japan
YAMAUCHI, Makoto Japan Japan
YANO, Hajime Japan Japan
YASUI, Chikako Japan Japan
YAMADA, Toru Japan Japan
YOSHIMURA, Hirokazu Japan Japan
YAMAMOTO, Hiroaki Japan Japan
YABUTA, Hikaru Japan Japan
YAGI, Masafumi Japan Japan
YAMAGATA, Tomohiko Japan Japan
YAMASAKI, Atsuma Japan Japan
YOSHIDA, Michitoshi Japan Japan
YOSHIDA, Takashi Japan Japan
YOSHIOKA, Satoshi Japan Japan
YAMAOKA, Hitoshi Japan Japan
YONEHARA, Atsunori Japan Japan
YOSHIDA, Fumi Japan Japan
YOON, Sung-Chul Korea, Rep of Korea, Rep of
YOON, Tae-Seog Korea, Rep of Korea, Rep of
YOON, Suk-Jin Korea, Rep of Korea, Rep of
YIM, Hong Suh Korea, Rep of Korea, Rep of
YUN, Youngjoo Korea, Rep of Korea, Rep of
YI, Yu Korea, Rep of Korea, Rep of
YIM, Kijeong Korea, Rep of Korea, Rep of
YANG, Hong-Jin Korea, Rep of Korea, Rep of
YU, Dae Jung Korea, Rep of Korea, Rep of
YI, Sukyoung Ken Korea, Rep of Korea, Rep of
YUN, Hong-Sik Korea, Rep of Korea, Rep of
YANG, Jongmann Korea, Rep of Korea, Rep of
Yusof, Norhasliza Malaysia Malaysia
Yam Gamboa, Joel Omar Mexico Mexico
Yi, Shuxu (Junior Member) Netherlands Netherlands
Ye, Haoyang (Junior Member) Netherlands Netherlands
Yang, Guang (Junior Member) Netherlands Netherlands
Yun, Joao L. Portugal Portugal
Yakovlev, Dmitrij G. Russian Federation Russian Federation
Yakunin, Ilya Russian Federation Russian Federation
Yungelson, Lev R. Russian Federation Russian Federation
Yakovleva, Valerija A. Russian Federation Russian Federation
Yushkin, Maxim V. Russian Federation Russian Federation
Yepes, Gustavo Spain Spain
Yadav, Rahul (Junior Member) United States Sweden
Yang, Jun Sweden Sweden
Yang, Sheng (Junior Member) Sweden Sweden
Yuma, Suraphong Japan Thailand
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