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
Sesto, Leandro Alberto (Junior Member) Argentina Argentina
Seta, Amit (Junior Member) Australia Australia
SETA, Masumichi Japan Japan
SETO, Naoki Japan Japan
Setti, Giancarlo Italy Italy
Severgnini, Paola Italy Italy
Sevilla, Miguel J. Spain Spain
Seward, Frederick D. United States United States
Sewilo, Marta M. United States United States
Sexton, Remington Oliver (Junior Member) United States United States
Seyed-Mahmoud, Behnam Canada Canada
Seymour, Nicholas Australia Australia
Sezer, Aytap Turkey Turkey
Sfair, Rafael Brazil Brazil
Shabala, Stanislav S. Australia Australia
Shablovinskaya, Elena (Junior Member) Chile Russian Federation
Shadmehri, Mohsen Ireland Ireland
Shaffer, David B. United States United States
Shafter, Allen W. United States United States
Shagatova, Natalia (Junior Member) Slovakia Slovakia
Shah, Priya (Hasan) India India
Shahaf, Sahar (Junior Member) Israel Israel
Shahbaz, Tariq Spain Spain
Shaifullah, Golam Mohiuddin (Junior Member) Italy Italy
Shaker, Ashraf Ahmed Egypt Egypt
Shakhovskoy, Dmitry N. Russian Federation Russian Federation
Shakht, Natalia A. Russian Federation Russian Federation
Shakun, Leonid S Ukraine Ukraine
Shakura, Nikolaj I. Russian Federation Russian Federation
Shalabiea, Osama M.A. Egypt Egypt
Shalchi, Andreas Canada Canada
Shaltout, Abdelrazek Mohammed Kasem Egypt Egypt
SHAN, Hongguang China, Nanjing China, Nanjing
Shandarin, Sergei F. United States United States
Shane, William W. United States United States
SHANG, Hsien China, Taipei China, Taipei
Shank, Michael H. United States United States
Shanklin, Jonathan D. United Kingdom United Kingdom
Shanks, Thomas United Kingdom United Kingdom
Shannon, Ryan M Australia Australia
Shao, Lijing China, Nanjing Germany
SHAO, Zhengyi China, Nanjing China, Nanjing
Shapero, Donald C. United States United States
Shapiro, Alexander I. Germany Germany
Shapiro, Irwin I. United States United States
Shaposhnikov, Vladimir E. Russian Federation Russian Federation
Shara, Michael United States United States
Sharina, Margarita Eugene Russian Federation Russian Federation
Sharma, A. Surjalal United States United States
Sharma, Aishawnnya (Junior Member) India India
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