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: 12743 (of which 1224 are Junior members). Number of Active Individual and Junior Members in the IAU Directory: 12378.


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Name▼ Location NCA adherence
Caballero, José A. Spain Spain
Caballero, Ricardo Nicolaos (Junior Member) China, Nanjing Cyprus
Caballero-Nieves, Saida Maria United States United States
Cabanac, Remi A. France France
Cabello, Iballa Argentina Argentina
Cabrera, Juan Germany Germany
Cabrera-Vives, Guillermo Chile Chile
Cabrit, Sylvie France France
Caccianiga, Alessandro Italy Italy
Cacciari, Carla Italy Italy
Caceres, Claudio Chile Chile
Cackett, Edward M United States United States
Čadež, Vladimir Serbia, Republic of Serbia, Republic of
Cadonati, Laura United States United States
Cai, Maxwell Xu (Junior Member) Netherlands Netherlands
CAI, Kai United States United States
CAI, Mingsheng China, Nanjing China, Nanjing
CAI, Yi-Fu China, Nanjing China, Nanjing
CAI, Yong China, Nanjing China, Nanjing
Cairns, Iver H. Australia Australia
Caito, Letizia Italy Italy
Calabrese, Erminia United Kingdom United Kingdom
Calabretta, Mark R. Australia Australia
Calamida, Annalisa United States United States
Calcaneo-Roldan, Carlos Antonio Mexico Mexico
Calcutt, Hannah (Junior Member) Poland Poland
Calderón, Jesús Argentina Argentina
Caldu Primo, Anahi Austria Austria
Caldwell, Douglas A United States United States
Caldwell, John A R United States United States
Caleb, Manisha Pranati (Junior Member) United Kingdom United Kingdom
Calistro Rivera, Gabriela (Junior Member) Germany Germany
Callanan, Paul Ireland Ireland
Callebaut, Dirk K. Belgium Belgium
Callegari Jr., Nelson Brazil Brazil
Callingham, Joseph Russell (Junior Member) Netherlands Netherlands
Cally, Paul S. Australia Australia
Čalogović, Jasa Croatia, the Republic of Croatia, the Republic of
Caloi, Vittoria Italy Italy
Calura, Francesco Italy Italy
Calvet, Nuria Venezuela Venezuela
Calvin, William H. United States United States
Calvo, Flavio (Junior Member) Sweden Sweden
Calzetti, Daniela United States United States
Cambrésy, Laurent France France
Camenzind, Max Germany Germany
Cameron, Andrew Collier United Kingdom United Kingdom
Cameron, Andrew David (Junior Member) Australia Australia
Cameron, Robert Germany Germany
Cami, Jan Lieven Jo Canada Canada
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