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: 12437 (of which 1084 are Junior members). Number of Active Individual and Junior Members in the IAU Directory: 12110.


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Name Location▼ NCA adherence
Sunyaev, Rashid A. Russian Federation Russian Federation
Sendzikas, Eugene (Junior Member) Russian Federation Russian Federation
Surdin, Vladimir G. Russian Federation Russian Federation
Semenko, Eugene A. Russian Federation Russian Federation
Suleymanova, Svetlana Akramovna Russian Federation Russian Federation
Snegirev, Sergey D. Russian Federation Russian Federation
Smolentsev, Sergej Georgievich Russian Federation Russian Federation
Smol’kov, Gennadij Ya Russian Federation Russian Federation
Samus, Nikolay N. Russian Federation Russian Federation
Seifina, Elena Russian Federation Russian Federation
Stepanov, Alexander V. Russian Federation Russian Federation
Suleimanov, Valery F. Russian Federation Russian Federation
Stojanović, Milan (Junior Member) Serbia, Republic of Serbia, Republic of
Stalevski, Marko Serbia, Republic of Serbia, Republic of
Savic, Đorđe (Junior Member) Serbia, Republic of Serbia, Republic of
Smole, Majda (Junior Member) Serbia, Republic of Serbia, Republic of
Simić, Zoran J Serbia, Republic of Serbia, Republic of
Šegan, Stevo D. Serbia, Republic of Serbia, Republic of
Samurović, Srdjan S. Serbia, Republic of Serbia, Republic of
Simic, Sasa Serbia, Republic of Serbia, Republic of
Sharon, Chelsea Singapore United States
Sekeráš, Matej Slovakia Slovakia
Saniga, Metod Slovakia Slovakia
Skopal, Augustin Slovakia Slovakia
Svoren, Jan Slovakia Slovakia
Shagatova, Natalia (Junior Member) Slovakia Slovakia
Silha, Jiri Slovakia Slovakia
Skokos, Charalampos (Haris) South Africa South Africa
Sefako, Ramotholo R. South Africa South Africa
Sickafoose, Amanda South Africa South Africa
Sikhosana, Sinenhlanhla Precious (Junior Member) South Africa South Africa
Smits, Derck P. South Africa South Africa
Soltynski, Maciej G South Africa South Africa
Skelton, Rosalind E. South Africa South Africa
Sorgho, Amidou (Junior Member) South Africa South Africa
Schroeder, Anja C. South Africa South Africa
Santos-Sanz, Pablo Spain Spain
Sahlmann, Johannes Spain Spain
Sanchez-Portal, Miguel Spain Spain
Sanchez-Saavedra, M. Luisa Spain Spain
Sanchez Bejar, Victor Javier Spain Spain
Sequeiros, Juan Spain Spain
Santander-Garcia, Miguel Spain Spain
Sanchez-Lavega, Agustin Spain Spain
Solanes, Josep M. Spain Spain
Schartel, Norbert Spain Spain
Sánchez Almeida, Jorge Spain Spain
Skillen, Ian Spain Spain
Shahbaz, Tariq Spain Spain
Soler, Roberto Spain Spain
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