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▼
Hörandel, Jörg Netherlands Netherlands
Heras, Ana M. Netherlands Netherlands
Hakim, Kaustubh (Junior Member) Switzerland Netherlands
Hoekstra, Hendrik Netherlands Netherlands
Helmi, Amina Netherlands Netherlands
Haverkorn, Marijke Netherlands Netherlands
Hermsen, Willem Netherlands Netherlands
Hoyng, Peter Netherlands Netherlands
Hernandez Santisteban, Juan Venancio (Junior Member) United Kingdom Netherlands
Henrichs, Hubertus F. Netherlands Netherlands
Helmich, Frank P. Netherlands Netherlands
Hearnshaw, John B. New Zealand New Zealand
Hill, Graham New Zealand New Zealand
Hansen, Frode Kristian Norway Norway
Hansteen, Viggo Norway Norway
Hervik, Sigbjorn Norway Norway
Haugan, Stein Vidar H. Norway Norway
Handler, Gerald Poland Poland
Hajduk, Marcin Poland Poland
Hellwing, Wojciech Andrzej Poland Poland
Heller, Michał Poland Poland
Hanasz, Michał B. Poland Poland
Hanasz, Jan Poland Poland
Hagen-Thorn, Vladimir A. Russian Federation Russian Federation
Hajdukova, Jr., Maria Slovakia Slovakia
Hefty, Jan Slovakia Slovakia
Hajdukova, Maria Slovakia Slovakia
Hric, Ladislav Slovakia Slovakia
Hambálek, Ľubomír Slovakia Slovakia
Husarik, Marek Slovakia Slovakia
Hess, Kelley Michelle South Africa South Africa
Herbst, Sheldon Rhameez (Junior Member) South Africa South Africa
Hilton, Matt South Africa South Africa
Hellaby, Charles William South Africa South Africa
Holbrook, Jarita C South Africa South Africa
Hernanz, Margarita Spain Spain
Herrero Davó, Artemio Spain Spain
Hernández-Monteagudo, Carlos Spain Spain
Hernández-Pajares, Manuel Spain Spain
Holm, Nils G. Sweden Sweden
Hjalmarsdotter, Linnea Sweden Sweden
Hallgren, Allan Sweden Sweden
Horellou, Cathy Sweden Sweden
Holmberg, Gustav Sweden Sweden
Högbom, Jan A. Sweden Sweden
Hayes, Matthew James Sweden Sweden
Hobbs, David Sweden Sweden
Höfner, Susanne Sweden Sweden
Heikkila, Arto J. Sweden Sweden
Hobiger, Thomas Germany Sweden
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