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
Noll, Keith S. United States United States
Noll, Stefan Germany Germany
NOMOTO, Ken'ichi Japan Japan
Nomura, Hideko Japan Japan
Norci, Laura Netherlands Netherlands
Nordh, Lennart H. Sweden Sweden
Nordlund, Åke Denmark Denmark
Nordstrom, Birgitta Denmark Denmark
Noriega-Crespo, Alberto United States United States
Norman, Colin A. United States United States
Normandeau, Magdalen Canada Canada
Norris, John Australia Australia
Norris, Mark Anderson United Kingdom United Kingdom
Norris, Raymond P. Australia Australia
Norris, Ryan Patrick (Junior Member) United States United States
North, Pierre Louis Switzerland Switzerland
Norton, Aimee A. United States United States
Norton, Andrew John United Kingdom United Kingdom
NOSAWA, Satoshi Japan Japan
Nosov, Evgeny V (Junior Member) Russian Federation Russian Federation
Nota, Antonella United States United States
Noterdaeme, Pasquier France France
Nothnagel, Axel Austria Germany
Nottale, Laurent France France
Nouh, Mohamed Egypt Egypt
NOUMARU, Junichi United States Japan
Novaković, Bojan S. Serbia, Republic of Serbia, Republic of
Novikov, Dmitry I Russian Federation Russian Federation
Novikov, Igor D. Denmark Denmark
Novosyadlyj, Bohdan Ukraine Ukraine
Novotný, Jan Czech Republic Czech Republic
Nowotny-Schipper, Walter Austria Austria
Noyelles, Benoît B. France France
Noyes, Robert W. United States United States
Noysena, Kanthanakorn (Junior Member) Thailand Thailand
Nozari, Kourosh Iran, Islamic Rep of Iran, Islamic Rep of
NOZAWA, Takaya Japan Japan
Nsamba, Benard (Junior Member) Germany Germany
Nss, Sigurd Kirkevold Norway Norway
Ntahompagaze, Joseph (Junior Member) AA-Country unknown Ethiopia
Nucita, Achille A. Italy Italy
Nuevo, Federico Alberto (Junior Member) Argentina Argentina
Nugent, Carrie R United States United States
Nugent, Peter E United States United States
Nugis, Tiit Estonia Estonia
Nulsen, Paul E.J. United States United States
Nummelin, Albert F. Sweden Sweden
Nunez, Jorge Spain Spain
Núñez, Luis A Colombia Colombia
Núñez-López, Ramona Mexico Mexico
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