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
Santiago, Basilio Xavier Brazil Brazil
Santiago Rodrigues, Luiz Felippe Netherlands Netherlands
Santillán, Alfredo J. Mexico Mexico
Santini, Paola Italy Italy
Santos, Angela R. G. (Junior Member) Portugal Portugal
Santos, Filipe D. Portugal Portugal
Santos Agostinho, Rui J. Portugal Portugal
Santos Jr., Joao F. C. Brazil Brazil
Santos-Lleo, Maria Spain Spain
Santos-Sanz, Pablo Spain Spain
Sanwal, Basant Ballabh India India
Sanz, Jaume Spain Spain
Sapar, Lili Estonia Estonia
Saracco, Paolo Italy Italy
Saraiva, Maria de Fatima Oliveira Brazil Brazil
Sarajedini, Ata United States United States
Sarajedini, Vicki United States United States
Sarasso, Maria Italy Italy
Sarazin, Craig L. United States United States
Sargent, Annelia I. United States United States
Sargent, Benjamin United States United States
Sargent, Mark Thomas Switzerland United Kingdom
Sari, Re'em Israel Israel
Sarid, Gal United States Israel
Saripalli, Lakshmi Valayya India India
Sarkar, Biplob (Junior Member) India India
Sarkar, Prakash India India
Sarkar, Shilpa (Junior Member) India India
Sarma, Anuj P. United States United States
Sarna, Marek Jacek Poland Poland
Sarre, Peter J. United Kingdom United Kingdom
Sarris, Emmanuel T. Greece Greece
Sarro, Luis Manuel Spain Spain
Sarson, Graeme Ross United Kingdom United Kingdom
Sarty, Gordon Eric Canada Canada
Sarzi, Marc United Kingdom United Kingdom
Sasaki, Manami Germany Germany
SASAKI, Sho Japan Japan
SASAKI, Toshiyuki Japan Japan
SASAKI , Minoru Japan Japan
SASAKI , Misao Japan Japan
SASAKI , Shin Japan Japan
Saslaw, William C. United States United States
Sasselov, Dimitar D. United States United States
Sasso, Clementina Italy Italy
Sastri, Hanumath J. India India
Sastry, Ch. V. India India
Sathyanarayana Rao, Mayuri (Junior Member) India United States
Sathyaprakash, Bangalore S United Kingdom United Kingdom
Sato, Takashi Canada Canada
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