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
Ma, Chopo United States United States
Ma, Yik Ki (Junior Member) Australia Australia
Ma, Yin-Zhe South Africa South Africa
MA, Guanyi China, Nanjing China, Nanjing
MA, Jingyuan China, Nanjing China, Nanjing
MA, Jun China, Nanjing China, Nanjing
MA, Lihua China, Nanjing China, Nanjing
MA, Wenzhang China, Nanjing China, Nanjing
MA, Yuehua China, Nanjing China, Nanjing
MA, YuQian China, Nanjing China, Nanjing
Maan, Yogesh (Junior Member) Netherlands Netherlands
Maartens, Roy South Africa South Africa
Macalpine, Gordon M. United States United States
Maccacaro, Tommaso Italy Italy
Maccagni, Dario Italy Italy
Maccagni, Filippo Marcello (Junior Member) Italy Italy
MacCallum, Malcolm A.H. United Kingdom United Kingdom
Maccarone, Maria Concetta Italy Italy
Maccarone, Thomas J. United States United States
Macchetto, Ferdinando Duccio United States United States
Maccone, Claudio Italy Italy
MacConnell, Darrell Jack United States United States
MacDonald, James United States United States
Maceroni, Carla Italy Italy
Macfarlane, Sally Ann South Africa South Africa
Machado, Maria A.D. Brazil Brazil
Machado, Pedro Mota Portugal Portugal
Machado Folha, Daniel F. Portugal Portugal
Machalski, Jerzy Poland Poland
MACHIDA, Mami Japan Japan
Maciejewski, Andrzej J. Poland Poland
Maciejewski, Witold B. United Kingdom United Kingdom
Maciel, Walter Junqueira Brazil Brazil
Maciesiak, Krzysztof Poland Poland
Mack, Karl-Heinz Italy Italy
Mack, Peter United States United States
Mackay, Duncan H. United Kingdom United Kingdom
Macke, Robert J. Vatican City State Vatican City State
Mackebrandt, Felix (Junior Member) Germany Germany
MacKenty, John W United States United States
Mackey, Dougal Australia Australia
Mackey, Jonathan Ireland Ireland
Mackie, Glen Australia Australia
MacKinnon, Alexander Lachlan United Kingdom United Kingdom
MacLeod, John M. Canada Canada
MacLeod, Morgan (Junior Member) United States United States
Mac Low, Mordecai-Mark United States United States
MacMillan, Daniel S United States United States
MacQueen, Robert M. United States United States
Macri, Lucas Matias United States United States
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