XXVII  International  Astronomy  Olympiad

Groups  of  contestants

Number of previous participations in IAO/IRAO	Y   e   a   r       o   f       b   i   r   t   h
	2003 and earlier	2004	2005	2006	2007	2008	2009	2010 and later
Never		g	b	b	b	a	a
1		g	g	b	b	b
2 and more		g	g	g	b
The Olympiad participants should be school students. They are not supposed to study at any institutions of higher education. Students who finished their school examination before the Olympiad cannot be members of a team even if they did not start university studies.
Note:	Group g is temporal and organizing for Olympiads 2021-2023 only.

	Participation permitted in group a or group b
	Participation permitted in b group only
	Participation permitted in g group only
	Participation not permitted
	Impossible situation

• Teams at the Olympiad

• Guideline for new participating countries

• The International Astronomy Olympiad (IAO) Web-site

• The XVI Asian-Pacific Astronomy Olympiad (APAO 2023)

Dr. Michael G. Gavrilov, Founding Chairman of the International Astronomy Olympiad,
ISSP of Russ. Acad. Sci., Academician Ossipyan street 2, 142432 Chernogolovka, Moscow region, Russia.

URL: http://www.issp.ac.ru/iao/2023/
e-mail: gavrilov@issp.ac.ru
fax: + 7-(496-52)-28-160