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: 12167 (of which 892 are Junior members). Number of Active Individual and Junior Members in the IAU Directory: 11892.


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Name▼ Location NCA adherence
Richter, Philipp Germany Germany
Richtler, Tom Chile Chile
Ricker, George R. United States United States
Ricker, Paul Milton United States United States
Rickman, Emily L (Junior Member) United States United States
Rickman, Hans Sweden Sweden
Ricotti, Massimo United States United States
Ridgway, Stephen T. United States United States
Ridgway, Susan E. United States United States
Ridpath, Ian W. United Kingdom United Kingdom
Riechers, Dominik Alexander United States United States
Rieder, Steven (Junior Member) United Kingdom Netherlands
Riegel, Kurt W. United States United States
Riehokainen, Aleksandr Finland Finland
Rieke, George Henry United States United States
Rieke, Marcia J United States United States
Riemer-Sorensen, Signe Norway Norway
Riesen, Timm-Emanuel Switzerland Switzerland
Rieutord, Michel France France
Riffel, Rogemar A Brazil Brazil
Riffel, Rogério Brazil Brazil
Rigaut, Francois J Australia Australia
Rigby, Jane R. United States United States
Riggs, Jamie D. United States United States
Riguccini, Laurie Brazil Brazil
Rijsdijk, Case South Africa South Africa
Riles, Keith United States United States
Riley, Pete United States United States
Rimmer, Paul Brandon United Kingdom United Kingdom
ringeval, christophe Belgium Belgium
Ringuelet, Adela E. Argentina Argentina
Ringwald, Frederick Arthur United States United States
Rioja, Maria J. Spain Spain
Ripa, Jakub Czech Republic China, Taipei
Ripken, Hartmut W. Germany Germany
Riquelme, Denise Germany Germany
Risaliti, Guido Italy Italy
Ritchey, Adam Michael United States United States
Ritter, Hans Germany Germany
Rivera Sandoval, Liliana (Junior Member) Canada United States
Rivilla, Víctor M. (Junior Member) Italy Italy
Rivinius, Thomas Chile Chile
Rivkin, Andrew S. United States United States
Rix, Hans-Walter Germany Germany
Rizos, Juan Luis (Junior Member) Spain Spain
Rizzi, Luca United States United States
Rizzo, Jose Ricardo Spain Spain
Roa Garzon, Maximo Alejandro Germany Germany
Roark, Terry P. United States United States
Robb, Russell M. Canada Canada
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