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: 12742 (of which 1224 are Junior members). Number of Active Individual and Junior Members in the IAU Directory: 12377.


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Name▼ Location NCA adherence
Tuthill, Peter G. Australia Australia
Tutukov, Aleksandr V. Russian Federation Russian Federation
Tuvikene, Taavi Estonia Estonia
Twarog, Bruce A. United States United States
Tycner, Christopher United States United States
Tylenda, Romuald Poland Poland
Tyler Jr, G. Leonard United States United States
Tylka, Allan J. United States United States
Tyson, John Anthony United States United States
Tytler, David United States United States
Tyul'bashev, Sergei A. Russian Federation Russian Federation
Tzanavaris, Panayiotis United States United States
Tziotziou, Konstantinos Greece Greece
Tzioumis, Anastasios Australia Australia
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