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: 12754 (of which 1224 are Junior members). Number of Active Individual and Junior Members in the IAU Directory: 12383.


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Name▼ Location NCA adherence
LEHNER, Matthew Joseph China, Taipei China, Taipei
Lehnert, Bo P. Sweden Sweden
Lehnert, Matthew David France France
Lehtinen, Jyri J (Junior Member) Finland Germany
Lehtinen, Kimmo Finland Finland
Lehto, Harry J. Finland Finland
Leibacher, John United States United States
Leibowitz, Elia M. Israel Israel
Leibundgut, Bruno Germany Germany
Leighly, Karen Marie United States United States
Leinert, Christoph Germany Germany
Leisawitz, David United States United States
Leister, Nelson Vani Brazil Brazil
Leitherer, Claus United States United States
Leka, K.D. United States United States
Lekshmi, Resmi India India
Lellouch, Emmanuel France France
Leloudas, Georgios Denmark Denmark
Lemaire, Philippe France France
Lemaître, Anne Belgium Belgium
Lemaitre, Gérard René France France
Lemke, Dietrich Germany Germany
Lemke, Michael Germany Germany
Lemmon, Mark T United States United States
Lena, Pierre J. France France
Lenain, Jean-Philippe France France
Lenc, Emil Australia Australia
Lendl, Monika Switzerland Switzerland
Lenok, Vladimir (Junior Member) Germany Germany
Leonard, Peter James T. United States United States
Leone, Francesco Italy Italy
Leonidaki, Ioanna Greece Greece
Leorat, Jacques France France
Le Petit, Franck France France
Lépine, Jacques R.D. Brazil Brazil
Lepine, Sebastien United States United States
Le Poncin-Lafitte, Christophe France France
Le Poole, Rudolf S. Netherlands Netherlands
Lepp, Stephen H. United States United States
Lequeux, James France France
Leroy, Bernard France France
Leroy, Nicolas France France
Lesch, Harald Germany Germany
Leslie, Sarah K (Junior Member) Netherlands Netherlands
Lesovoi, Sergey Russian Federation Russian Federation
Lester, Daniel F. United States United States
Lester, John B. Canada Canada
Lesteven, Soizick France France
Lestrade, Jean-François France France
Letarte, Bruno South Africa South Africa
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