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
YANG, Ying (Junior Member) China, Nanjing China, Nanjing
YANG, Zhigen China, Nanjing China, Nanjing
Yankiv-Vitkovska, Liubov Ukraine Ukraine
Yankova, Krasimira Dimitrova Bulgaria Bulgaria
YANO, Hajime Japan Japan
YANO , Taihei Japan Japan
YAO, Qijun China, Nanjing China, Nanjing
YAO, Yongqiang China, Nanjing China, Nanjing
Yaron, Ofer Israel Israel
YASUDA , Naoki Japan Japan
YASUI, Chikako Japan Japan
YASUTAKE, Nobutoshi Japan Japan
Yatskiv, Yaroslav S. Ukraine Ukraine
Yau, Kevin K.C. United States United States
Ye, Quanzhi (Junior Member) United States United States
YE, Binxun China, Nanjing China, Nanjing
YE, Shuhua China, Nanjing China, Nanjing
Yee, Howard K.C. Canada Canada
Yeghikyan, Ararat Armenia Armenia
Yegorova, Irina A. Chile Chile
Yelkenci, Aysegul F. Turkey Turkey
Yelkenci, Korhan Fuat Turkey Turkey
Yelles Chaouche, Lotfi Algeria Algeria
Yeo, Kok Leng Germany Germany
Yeomans, Donald K. United States United States
Yepes, Gustavo Spain Spain
Yerin, Serge M. (Junior Member) Ukraine Ukraine
Yerli, Sinan Kaan Turkey Turkey
Yeşilyurt, Ibrahim Saffet Turkey Turkey
Yi, Shuxu (Junior Member) Netherlands Netherlands
YI, Sukyoung Ken Korea, Rep of Korea, Rep of
YI, Yu Korea, Rep of Korea, Rep of
Yildiz, Umut United States United States
YILDIZ, MUTLU Turkey Turkey
YIM, Hong Suh Korea, Rep of Korea, Rep of
YIN, Dongshan (Junior Member) China, Nanjing China, Nanjing
Yo, Hwei-Jang China, Taipei China, Taipei
YOICHIRO , Suzuki Japan Japan
YOKOSAWA, Masayoshi Japan Japan
Yokoyama, Tadashi Brazil Brazil
YOKOYAMA, Jun'ichi Japan Japan
YOKOYAMA, Takaaki Japan Japan
YONEHARA , Atsunori Japan Japan
YONEKURA , Yoshinori Japan Japan
YONETOKU, Daisuke Japan Japan
Yong, David Australia Australia
Yoon, Suk-Jin Korea, Rep of Korea, Rep of
YOON, Tae-Seog Korea, Rep of Korea, Rep of
York, Donald G. United States United States
Yorke, Harold W. United States United States
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