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: 12739 (of which 1224 are Junior members). Number of Active Individual and Junior Members in the IAU Directory: 12373.


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Name▼ Location NCA adherence
Klein, Richard I. United States United States
Klein, Ulrich Germany Germany
Kleint, Lucia Switzerland Switzerland
Klein Wolt, Marc Netherlands Netherlands
Klement, Robert (Junior Member) Chile Czech Republic
Klepczynski, William J. United States United States
Kleshchonok, Valerii Ukraine Ukraine
Klessen, Ralf S. Germany Germany
Klevas, Jonas (Junior Member) Lithuania Lithuania
Kliem, Bernhard Germany Germany
Klimchuk, James A. United States United States
Klimenko, Viacheslav Vitalievich (Junior Member) Russian Federation Russian Federation
Klinkhamer, Frans Richard Germany Germany
Klioner, Sergei A. Germany Germany
Klitsch, Anne (Junior Member) Denmark Denmark
Klochkova, Valentina G. Russian Federation Russian Federation
Klock, Benny L. United States United States
Klöckner, Hans-Rainer Germany Germany
Klokocnik, Jaroslav Czech Republic Czech Republic
Klose, Sylvio Germany Germany
Kluska, Jacques (Junior Member) Belgium Belgium
Klutse, Nana Ama Browne Ghana Ghana
Kluźniak, Włodzimierz Poland Poland
Klvana, Miroslav Czech Republic Czech Republic
Klyuyeva, Antonina Igorivna (Junior Member) Ukraine Ukraine
Knacke, Roger F. United States United States
Knapen, Johan Hendrik Spain Spain
Knapp, Gillian R. United States United States
Knapp, Johannes Germany Germany
Knee, Lewis B.G. Canada Canada
Kneer, Franz Germany Germany
Kneib, Jean-Paul Switzerland Switzerland
Knezek, Patricia Marie United States United States
Knezevic, Sladjana Serbia, Republic of Serbia, Republic of
Knezevic, Zoran Serbia, Republic of Serbia, Republic of
Kniazev, Alexei South Africa South Africa
Knight, Matthew Manning United States United States
Knödlseder, Jürgen France France
Knoelker, Michael T. F. United States United States
Knowles, Kenda South Africa South Africa
Knude, Jens Kirkeskov Denmark Denmark
Knudsen, Kirsten K. Sweden Sweden
KO, Chung-Ming China, Taipei China, Taipei
KO, Jongwan Korea, Rep of Korea, Rep of
Koay, Jun Yi Denmark Denmark
Kobayashi, Chiaki United Kingdom United Kingdom
Kobayashi, Shiho United Kingdom United Kingdom
KOBAYASHI, Hideyuki Japan Japan
KOBAYASHI, Kaori Japan Japan
KOBAYASHI, Masakazu Japan Japan
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