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
Blazek, Jonathan (Junior Member) Switzerland Switzerland
Bleeker, Johan A.M.Ir. Netherlands Netherlands
Bleyer, Ulrich Germany Germany
Blinnikov, Sergey I. Russian Federation Russian Federation
Block, David Lazar South Africa South Africa
Bloemen, Hans (J.B.G.M.) Netherlands Netherlands
Bloemen, Steven Netherlands Netherlands
Blommaert, Joris A.D.L. Belgium Belgium
Blomme, Ronny Belgium Belgium
Blondin, John M. United States United States
Blondin, Stéphane Chile France
Bloomfield, D. Shaun United Kingdom United Kingdom
Blouin, Simon (Junior Member) Canada Canada
Bluck, Asa F. L. United Kingdom United Kingdom
Blum, Robert D. United States United States
Blumenthal, George R. United States United States
Blumenthal, Kelly (Junior Member) United States United States
Blumer, Harsha United States Canada
Blundell, Katherine M. United Kingdom United Kingdom
Blundell, Raymond United States United States
Blyth, Sarah-Louise South Africa South Africa
Boaca, Ioana Lucia Romania Romania
Boata, Remus Stefan Romania Romania
Boboltz, David A. United States United States
Bobrick, Alexey (Junior Member) Israel Israel
Bobrowsky, Matthew United States United States
Bobylev, Vadim V. Russian Federation Russian Federation
Boccato, Caterina Italy Italy
Bocchino, Fabrizio Italy Italy
Bochsler, Peter Switzerland Switzerland
Bock, Douglas C-J. Australia Australia
Bockelee-Morvan, Dominique France France
Bodaghee, Arash United States United States
Boddapati, Anandarao G. India India
Bode, Michael F. United Kingdom United Kingdom
Boden, Andrew F. United States United States
Bodenheimer, Peter United States United States
Bodewits, Dennis United States United States
Bodi, Attila (Junior Member) Hungary Hungary
Bodo, Gianluigi Italy Italy
Boechat-Roberty, Heloisa M. Brazil Brazil
Boehm, Torsten C. France France
Böhringer, Hans Germany Germany
Boeker, Torsten United States United States
Boër, Michel France France
Boesgaard, Ann M. United States United States
Böttcher, Markus South Africa South Africa
Boffin, Henri M.J. Germany Chile
Bogdan, Thomas J. United States United States
Bognár, Zsófia Hungary Hungary
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