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
SATO, Bunei Japan Japan
SATO, Humitaka Japan Japan
SATO, Isao Japan Japan
SATO, Katsuhiko Japan Japan
SATO, Koichi Japan Japan
SATO, Shinji Japan Japan
SATO, Shuichi Japan Japan
SATO , Fumio Japan Japan
SATO , Shuji Japan Japan
Saucedo Morales, Julio Cesar Mexico Mexico
SAULDER, Christoph (Junior Member) Korea, Rep of Korea, Rep of
Saulson, Peter R. United States United States
Sault, Robert J Australia Australia
Saurabh, Saurabh India India
Sauty, Christophe France France
Savage, Blair D. United States United States
Savaglio, Sandra Italy Italy
Savanevych, Vadym Yevgenievych Ukraine Ukraine
Savanov, Igor Spartakovich Russian Federation Russian Federation
Savchenko, Sergey Sergeevich Russian Federation Russian Federation
Saviane, Ivo Chile Chile
Savic, Đorđe (Junior Member) Serbia, Republic of Serbia, Republic of
Savin, Daniel Wolf United States United States
Savini, Giorgio United Kingdom United Kingdom
Savino, Alessandro (Junior Member) United States United States
Savolainen, Tuomas Kalevi Finland Finland
Savonije, Gertjan Netherlands Netherlands
SAWA, Takeyasu Japan Japan
Sawada, Tsuyoshi Chile Chile
SAWADA-SATOH, Satoko Japan Japan
SAWAI, Hidetomo Japan Japan
Sawala, Till Finland Finland
Sawangwit, Utane Thailand Thailand
Sawant, Hanumant S. Brazil Brazil
Sawicki, Marcin Canada Canada
Sawyer, Constance B. United States United States
Saxena, Aayush (Junior Member) United Kingdom United Kingdom
Sayamanthula, Krishna Prasad Belgium Belgium
Saygac, Ahmet Talat Turkey Turkey
Sazonov, Sergey Russian Federation Russian Federation
Sbordone, Luca Chile Germany
Scalise Jr, Eugenio Brazil Brazil
Scalo, John Michael United States United States
Scandariato, Gaetano Italy Italy
Scannapieco, Evan S. United States United States
Scaramella, Roberto Italy Italy
Scardia, Marco Italy Italy
Scarfe, Colin David Canada Canada
Scaringi, Simone United Kingdom United Kingdom
Schad, Thomas A United States United States
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