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.

Total number of IAU Individual and Junior members: 11812 (of which 717 are Junior members). Number of Active Individual and Junior Members in the IAU Directory: 11534.


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Name Location▼ NCA adherence
Shipman, Russell F. Netherlands Netherlands
Shaifullah, Golam Mohiuddin (Junior Member) Netherlands Netherlands
Simionescu, Aurora Netherlands Netherlands
Santiago Rodrigues, Luiz Felippe Netherlands Netherlands
Szomoru, Arpad Netherlands Netherlands
Stam, Daphne M Netherlands Netherlands
Strom, Richard G. Netherlands Netherlands
Snellen, Ignas A.G. Netherlands Netherlands
Snik, Frans Netherlands Netherlands
Stark, Ronald Netherlands Netherlands
Savonije, Gertjan Netherlands Netherlands
Sanders, Robert Netherlands Netherlands
Schulz, Rita M. Netherlands Germany
Steel, Duncan I. New Zealand New Zealand
Snowden, Michael New Zealand New Zealand
Sweatman, Winston L. New Zealand New Zealand
Stevance, Heloise F (Junior Member) New Zealand New Zealand
Solheim, Jan Erik Norway Norway
Shen, Sijing Norway Norway
Skjæraasen, Olaf Norway Norway
Silva, Marta Bruno (Junior Member) Norway Netherlands
Szydlarski, Mikolaj Marcin (Junior Member) Norway Norway
Saenz, Eduardo Panama Panama
Soriano, Bernardo M. Philippines Canada
Sese, Rogel Mari D. Philippines Philippines
Szewczuk, Wojciech (Junior Member) Poland Poland
Stachowski, Grzegorz S Poland Poland
Szuszkiewicz, Ewa Poland Poland
Szutowicz, Sławomira E. Poland Poland
Szymczak, Marian Poland Poland
Sikora, Marek Poland Poland
Stawikowski, Antoni Poland Poland
Strobel, Andrzej Poland Poland
Soida, Marian Poland Poland
Sokołowski, Lech Poland Poland
Smolec, Radosław Poland Poland
Sołtan, Andrzej Maria Poland Poland
Sarna, Marek Jacek Poland Poland
Soszyński, Igor Poland Poland
Stępień, Kazimierz Szczepan Poland Poland
Schreiber, Roman Poland Poland
Schwarzenberg-Czerny, Alex Poland Poland
Siarkowski, Marek Poland Poland
Skowron, Jan Poland Poland
Stawarz, Łukasz Filip Poland Poland
Skowron, Dorota M Poland Poland
Szymański, Michał Krzysztof Poland Poland
Schillak, Stanisław Poland Poland
Szczerba, Ryszard Poland Poland
Sylwester, Barbara Poland Poland
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