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 10 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.

Total number of IAU Individual and Junior members: 13562 (of which 533 Junior members). Number of Active Individual and Junior Members in the IAU Directory: 11067.


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Name Location▼ NCA adherence
Hermsen, Willem Netherlands Netherlands
Haverkorn, Marijke Netherlands Netherlands
Hoyng, Peter Netherlands Netherlands
Habing, Harm J. Netherlands Netherlands
Heras, Ana M. Netherlands Netherlands
Hovenier, J. W. Netherlands Netherlands
Hessels, Jason W T Netherlands Netherlands
Henrichs, Hubertus F. Netherlands Netherlands
Hörandel, Jörg Netherlands Netherlands
Hill, Graham New Zealand New Zealand
Hearnshaw, John B. New Zealand New Zealand
Hansen, Frode Kristian Norway Norway
Hansteen, Viggo Norway Norway
Hervik, Sigbjorn Norway Norway
Haugan, Stein Vidar H. Norway Norway
Hussain, Shahid Pakistan United States
Handler, Gerald Poland Poland
Heller, Michał Poland Poland
Hanasz, Jan Poland Poland
Hellwing, Wojciech Andrzej Poland Poland
Hajduk, Marcin Poland Poland
Hanasz, Michał B. Poland Poland
Hagen-Thorn, Vladimir A. Russian Federation Russian Federation
Husarik, Marek Slovakia Slovakia
Hefty, Jan Slovakia Slovakia
Hajdukova, Maria Slovakia Slovakia
Hambálek, Ľubomír Slovakia Slovakia
Hajdukova, Jr., Maria Slovakia Slovakia
Hric, Ladislav Slovakia Slovakia
Holbrook, Jarita C South Africa South Africa
Hess, Kelley Michelle South Africa South Africa
Herbst, Sheldon Rhameez (Junior Member) South Africa South Africa
Hellaby, Charles William South Africa South Africa
Hilton, Matt South Africa South Africa
Hernández-Monteagudo, Carlos Spain Spain
Hernández-Pajares, Manuel Spain Spain
Hasinger, Günther Spain United States
Herrero Davó, Artemio Spain Spain
Hernanz, Margarita Spain Spain
Hartman, Henrik Sweden Sweden
Hjalmarson, Ake G. Sweden Sweden
Heikkila, Arto J. Sweden Sweden
Hayes, Matthew James Sweden Sweden
Högbom, Jan A. Sweden Sweden
Hallgren, Allan Sweden Sweden
Holmberg, Gustav Sweden Sweden
Hjalmarsdotter, Linnea Sweden Sweden
HAAS, RÜDIGER Sweden Sweden
Horellou, Cathy Sweden Sweden
Heiter, Ulrike Sweden Sweden
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