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: 12428 (of which 1084 are Junior members). Number of Active Individual and Junior Members in the IAU Directory: 12099.


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Name Location▼ NCA adherence
SUNG, Hyun-Il Korea, Rep of Korea, Rep of
Šmelds, Ivar Latvia Latvia
Salītis, Antonijs Latvia Latvia
Sabra, Bassem Mohamad Lebanon Lebanon
Sudzius, Jokubas Lithuania Lithuania
Stonkutė, Rima Lithuania Lithuania
Stonkutė, Edita Lithuania Lithuania
Simmons, John Francis L. Luxembourg AA-Country unknown
Sabri, Nor Hazmin Malaysia Malaysia
Soo, John Yue Han (Junior Member) Malaysia Malaysia
SOMANAH, Radhakhrishna Mauritius AA-Country unknown
Santillán, Alfredo J. Mexico Mexico
Srinivasan, Sundar Mexico Mexico
Schroeder, Klaus Peter Mexico Mexico
Saucedo Morales, Julio Cesar Mexico Mexico
Silich, Sergey Mexico Mexico
Segura, Antigona Mexico Mexico
Sanchez Sanchez, Sebastian Francisco Mexico Mexico
Schuster, William John Mexico Mexico
Sabin, Laurence Mexico Mexico
Sánchez, Leonardo Javier Mexico Mexico
Sodnomsambuu, Demberel Mongolia Mongolia
SIHER, El Arbi Morocco Morocco
SABIL, Mohammed Morocco Morocco
Steenkamp, Riaan Namibia South Africa
Schrijver, Johannes Netherlands Netherlands
Schaye, Joop Netherlands Netherlands
Stark, Ronald Netherlands Netherlands
Shipman, Russell F. Netherlands Netherlands
Sanders, Robert Netherlands Netherlands
Shulevski, Aleksandar (Junior Member) Netherlands Netherlands
Strom, Richard G. Netherlands Netherlands
Simionescu, Aurora Netherlands Netherlands
Stolker, Tomas (Junior Member) Netherlands Netherlands
Snellen, Ignas A.G. Netherlands Netherlands
Snik, Frans Netherlands Netherlands
Savonije, Gertjan Netherlands Netherlands
Sancisi, Renzo Netherlands Italy
Schulz, Rita M. Netherlands Germany
Szomoru, Arpad Netherlands Netherlands
Santiago Rodrigues, Luiz Felippe Netherlands Netherlands
Stam, Daphne M Netherlands Netherlands
Shimwell, Timothy W Netherlands Netherlands
Stuik, Remko Netherlands Netherlands
Shaifullah, Golam Mohiuddin (Junior Member) Netherlands Netherlands
Salmi, Tuomo (Junior Member) Netherlands Netherlands
Sweatman, Winston L. New Zealand New Zealand
Stevance, Heloise F (Junior Member) New Zealand New Zealand
Snowden, Michael New Zealand New Zealand
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