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: 12737 (of which 1224 are Junior members). Number of Active Individual and Junior Members in the IAU Directory: 12372.


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Name▼ Location NCA adherence
Chambers, John E. United States United States
Chambers, Kenneth C United States United States
Chambliss, Carlson R. United States United States
Chamcham, Khalil United Kingdom United Kingdom
Chamel, Nicolas Belgium Belgium
Champion, David John Germany Germany
Chan, Jennifer Yik Ham (Junior Member) Canada Canada
Chan, Man Ho Hong Kong AA-Country unknown
Chan, Roberto Brazil Brazil
CHAN, Kwing Lam China, Nanjing China, Nanjing
Chance, Kelly V. United States United States
Chanchaiworawit, Krittapas (Junior Member) Thailand Thailand
Chandler, Claire United States United States
Chandra, Poonam United States United States
Chandra, Ramesh India India
Chandra, Sunil South Africa South Africa
Chandra, Suresh India India
Chandrasekhar, Thyagarajan India India
CHANG, Chan-Kao China, Taipei China, Taipei
CHANG, Heon-Young Korea, Rep of Korea, Rep of
CHANG, Hong China, Nanjing China, Nanjing
CHANG, Hsiang-Kuang China, Taipei China, Taipei
CHANG, Kyongae Korea, Rep of Korea, Rep of
CHANG, Ruixiag China, Nanjing China, Nanjing
CHANG, Seo-Won Korea, Rep of Korea, Rep of
CHANG, Yu-Yen China, Taipei China, Taipei
Changeat, Changeat (Junior Member) United Kingdom United Kingdom
Chanishvili, Revaz Givi Georgia Georgia
Channok, Chanruangrit Thailand Thailand
Chantavat, Teeraparb Thailand Thailand
Chantereau, William (Junior Member) France France
CHAO, Benjamin F. China, Taipei China, Taipei
Chapanov, Yavor Bulgaria Bulgaria
Chaparro, German Colombia Colombia
Chaplin, William James United Kingdom United Kingdom
Chapman, Clark R. United States United States
Chapman, Emma Olivia United Kingdom United Kingdom
Chapman, Gary A. United States United States
Chapman, Sandra C. United Kingdom United Kingdom
Charalambous, Constantinos (Junior Member) United Kingdom Cyprus
Charbonneau, Paul Canada Canada
Charbonneau, Rebecca A (Junior Member) United States United States
Charbonnel, Corinne Switzerland France
Charbonnier, Aldée Brazil Brazil
CHARDONNET, Pascal France France
Chargeishvili, Bidzina Bidzina Georgia Georgia
Charles, Philip Allan United Kingdom United Kingdom
Charlot, Patrick France France
Charlot, Stephane France France
Charmandaris, Vassilis Greece Greece
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