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: 12754 (of which 1224 are Junior members). Number of Active Individual and Junior Members in the IAU Directory: 12383.


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Name Location NCA adherence▼
Tissera, Patricia B. Argentina Argentina
Torres, Andrea Fabiana Argentina Argentina
Tamazian, Vakhtang S. Spain Armenia
Ter-Kazarian, Gagik Tosik Armenia Armenia
Tingay, Steven J. Australia Australia
Titov, Oleg A. Australia Australia
Tucker, Brad E Australia Australia
Tzioumis, Anastasios Australia Australia
Thekkeppattu, Jishnu Nambissan (Junior Member) Australia Australia
Tisserand , Patrick Australia Australia
Tothill, Nicholas F.H. Australia Australia
Triani, Dian P (Junior Member) Australia Australia
Tango, William J. Australia Australia
Trenti, Michele Australia Australia
Trott, Cathryn Margaret Australia Australia
Tuthill, Peter G. Australia Australia
Tran, Kim-Vy Australia Australia
Tescari, Edoardo Australia Australia
Tinney, Christopher G. Australia Australia
Thrane, Eric H Australia Australia
Tonini, Chiara Australia Australia
Thomson, Alec J.M. (Junior Member) Australia Australia
Temmer, Manuela Austria Austria
Thater, Sabine (Junior Member) Austria Austria
Temporin, Sonia Giovanna Austria Austria
Thoul, Anne A. Belgium Belgium
Triana, Santiago Andres Belgium Belgium
Tassoul, Jean-Louis Belgium Belgium
Tkachenko, Andrii Belgium Belgium
Telles, Eduardo Brazil Brazil
Trevisan, Marina Brazil Brazil
Teixeira, Ramachrisna Brazil Brazil
Tomova, Mima Todorova Bulgaria Bulgaria
Tsvetkova, Svetla Valentinova Bulgaria Bulgaria
Tsvetkov, Tsvetan (Junior Member) Bulgaria Bulgaria
Turner, David G. Canada Canada
Thomas, Guillaume Frédéric (Junior Member) Spain Canada
Taylor, A. Russell Canada Canada
Tikhomolov, Evgeniy Canada Canada
Thacker, Robert J Canada Canada
Taylor, James Erskine Canada Canada
Tapping, Kenneth F. Canada Canada
Tatum, Jeremy B. Canada Canada
Tahani, Kianoosh (Junior Member) Canada Canada
Tejos, Nicolas Chile Chile
Treister, Ezequiel Chile Chile
Tristram, Konrad R. W. Chile Chile
Troncoso Iribarren, Paulina Alejandra Chile Chile
Tregloan-Reed, Jeremy James (Junior Member) Chile Chile
Tokovinin, Andrei A. Chile Chile
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