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: 12738 (of which 1224 are Junior members). Number of Active Individual and Junior Members in the IAU Directory: 12372.


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Name▼ Location NCA adherence
Rupen, Michael P Canada Canada
Rupprecht, Gero Germany Germany
Rushton, Anthony Peter United Kingdom United Kingdom
Rusin, Vojtech Slovakia Slovakia
Russel, Sara S. United Kingdom United Kingdom
Russell, Alexander J B United Kingdom United Kingdom
Russell, Christopher T. United States United States
Russell, David M. United Arab Emirates United Arab Emirates
Russell, Jane L. United States United States
Russev, Ruscho Minchev Bulgaria Bulgaria
Russo, Guido Italy Italy
Russo, Pedro Netherlands Netherlands
Ruszkowski, Mateusz United States United States
Rutkowski, Michael J United States United States
Rutledge, Robert E. Canada Canada
Ruždjak, Domagoj Croatia, the Republic of Croatia, the Republic of
Ruzicka, Adam Czech Republic Czech Republic
Ryabchikova, Tatiana A. Russian Federation Russian Federation
Ryabov, Boris I. Latvia Latvia
Ryabov, Michael I. Ukraine Ukraine
Ryabova, Galina O. Russian Federation Russian Federation
Ryan, Erin Lee United States United States
Ryan, Sean Gerard United Kingdom United Kingdom
Ryan-Weber, Emma V Australia Australia
Rybák, Ján Slovakia Slovakia
Rybak, Matus (Junior Member) Netherlands Netherlands
Rydbeck, Gustaf H.B. Sweden Sweden
Ryde, Felix M. Sweden Sweden
Ryde, Nils A.E. Sweden Sweden
Ryden, Barbara Sue United States United States
Ryder, Stuart Australia Australia
Rygl, Kazi L. J. Italy Italy
Rykhlova, Lidiya V. Russian Federation Russian Federation
Ryś, Stanisław Poland Poland
Ryspaeva, Elizaveta Borisovna (Junior Member) Russian Federation Russian Federation
Ryu, Taeho (Junior Member) Germany Germany
RYU, Dongsu Korea, Rep of Korea, Rep of
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