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: 12769 (of which 1224 are Junior members). Number of Active Individual and Junior Members in the IAU Directory: 12399.


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Name▼ Location NCA adherence
Starkenburg, Else Germany Germany
Starling, Rhaana Leigh Catherine United Kingdom United Kingdom
Starrfield, Sumner United States United States
Stasinska, Grazyna France France
Stassun, Keivan G United States United States
Stasyszyn, Federico Andrés Argentina Argentina
Stateva, Ivanka Kirtcheva Bulgaria Bulgaria
Stathopoulou, Maria Greece Greece
Statler, Thomas S. United States United States
Staubert, Rüdiger Germany Germany
Staude, Hans Jakob Germany Germany
Staude, Juergen Germany Germany
Staveley-Smith, Lister Australia Australia
Stavinschi, Magda G. Romania Romania
Stawarz, Łukasz Filip Poland Poland
Stawikowski, Antoni Poland Poland
Stcherbinine, Aurélien (Junior Member) United States United States
Stebbins, Robin United States United States
Stecker, Floyd W. United States United States
Stecklum, Bringfried Germany Germany
Stee, Philippe France France
Steel, Duncan I. New Zealand New Zealand
Steele, John United States United States
Steenbrugge, Katrien Christine Chile Chile
Steenkamp, Riaan Namibia South Africa
Steffen, Matthias Germany Germany
Štefl, Vladimir Czech Republic Czech Republic
Stehle, Chantal France France
Steigenberger, Peter Germany Germany
Steiman-Cameron, Thomas United States United States
Stein, John William United States United States
Stein, Robert F. United States United States
Steinbring, Eric Canada Canada
Steiner, Oskar Germany Germany
Steinhauer, Aaron J United States United States
Steinle, Helmut R. Germany Germany
Steinmetz, Matthias Germany Germany
Stella, Luigi Italy Italy
Stellingwerf, Robert F. United States United States
Stellmacher, Götz France France
Stellmacher, Irène France France
Stello, Dennis Australia Australia
Stempels, Eric Sweden Sweden
Stenberg Wieser, Gabriella Sweden Sweden
Stencel, Robert Edward United States United States
Stenflo, Jan Olof Switzerland Switzerland
Stenholm, Björn Sweden Sweden
Štěpán, Jiří Czech Republic Czech Republic
Stepanov, Alexander V. Russian Federation Russian Federation
Stephens, Denise C United States United States
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