Individual Members

Professional scientists whose research is directly relevant to some branch of astronomy are eligible for election as Individual Members. Individual Members are, normally, admitted by the Executive Committee on the proposal of a National Member.

Individual 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

Total number of IAU members:11265. Number of Individual Members in the IAU Directory: 9248

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Name Location NCA adherence
Stecker, Floyd W. United States United States
Stecklum, Bringfried Germany Germany
Stée, Philippe France France
Steel, Duncan I. New Zealand New Zealand
Steele, John United States United States
Steenbrugge, Katrien Christine Chile Chile
Stefanik, Robert United States United States
Steffen, Matthias Germany Germany
Štefl, Vladimir Czech Republic Czech Republic
Stehlé, Chantal France France
Steigenberger, Peter Germany Germany
Steigman, Gary United States United States
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, Joao E. Brazil Brazil
Steiner, Oskar Germany Germany
Steinitz, Raphael Israel Israel
Steinle, Helmut R. Germany Germany
Steinlin, Uli Switzerland Switzerland
Steinmetz, Matthias Germany Germany
Stellingwerf, Robert F. United States United States
Stellmacher, Götz France France
Stellmacher, Irène France France
Stello, Dennis Australia Australia
Stencel, Robert Edward United States United States
Stenflo, Jan Olof Switzerland Switzerland
Stenholm, Björn Sweden Sweden
Štěpán, Jiří Czech Republic Czech Republic
Stepanian, Natali N. Ukraine Ukraine
Stepanov, Alexander V. Russian Federation Russian Federation
Stephens, S. A. India India
Stephenson, F. Richard United Kingdom United Kingdom
Stępień, Kazimierz Szczepan Poland Poland
Stergioulas, Nikolaos Greece Greece
Sterken, Christiaan L. Belgium Belgium
Stern, Robert Allan United States United States
Stern, S. Alan United States United States
Sterzik, Michael F. Germany Germany
Steshenko, N. V. Ukraine Ukraine
Stetson, Peter B. Canada Canada
Stevens, Ian R. United Kingdom United Kingdom
Steves, Bonnie Alice United Kingdom United Kingdom
Stewart, Paul United Kingdom United Kingdom
Stewart, Susan Gessner United States United States
Stewart-Mukhopadhyay, Sarah T United States United States
Stiavelli, Massimo United States United States
Stickland, David J. United Kingdom United Kingdom
Stier, Mark T. United States United States
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