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:12465. Number of Individual Members in the IAU Directory: 10455

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Name Location NCA adherence
Sil'chenko, Olga K. Russian Federation Russian Federation
Silich, Sergey Mexico Mexico
Silk, Joseph I. United Kingdom United Kingdom
Sillanpaa, Aimo Kalevi Finland Finland
Sills, Alison I. Canada Canada
Silva, David Richard United States United States
Silva, Laura Italy Italy
Silva Aguirre, Victor Denmark Denmark
Silva-Villa, Esteban Colombia Colombia
Silvestro, Giovanni Italy Italy
Silvotti, Roberto Italy Italy
Sima, Zdislav Czech Republic Czech Republic
Simic, Sasa Serbia, Republic of Serbia, Republic of
Simić, Zoran J Serbia, Republic of Serbia, Republic of
Simkin, Susan M. United States United States
Simmons, John Francis L. Luxembourg Luxembourg
Simnett, George M. United Kingdom United Kingdom
Simó, Carles Spain Spain
Simões, Paulo J. A. United Kingdom United Kingdom
Simon, Amy Ann United States United States
Simon, George W. United States United States
Simon, Guy France France
Simon, Jean-Louis France France
Simon, Michal United States United States
Simon, Patrick Germany Germany
Simon, Paul C. Belgium Belgium
Simon, Theodore United States United States
Simon, Vojtech Czech Republic Czech Republic
Simón-Díaz, Sergio Spain Spain
Simonia, Irakli Georgia Georgia
Simoniello, Rosaria Switzerland Switzerland
Simonneau, Eduardo France France
Simons, Douglas A. United States United States
Simonson, S. Christian United States United States
Sims, Mark R. United Kingdom United Kingdom
Simunac, Kristin Diane Commer United States United States
Sinachopoulos, Dimitris Greece Greece
Singal, Ashok K. India India
Singh, Harinder P. India India
Singh, Jagdev India India
Singh, Kulinder Pal India India
Singh, Mahendra India India
Sinha, Krishnanand India India
Sinha, Rameshwar P. United States United States
Sion, Edward Michael United States United States
Siopis, Christos Belgium Greece
Siregar, Suryadi Indonesia Indonesia
Siringo, Giorgio Chile Chile
Sistero, Roberto F. Argentina Argentina
Sitko, Michael L. United States United States
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