International Olympiad on Astronomy and Astrophysics

The International Olympiad on Astronomy and Astrophysics (IOAA) is an annual Astronomy and Astrophysics competition for high school students. It is one of the international science olympiads.[1]

IOAA 2012 at Rio Planetarium, Rio de Janeiro, Brazil.

The Olympiad was founded from a dissidence inside the International Astronomy Olympiad, in order to increase the scope of the organization.

The first IOAA was held in Chiang Mai, Thailand, in November/December 2007.


The first Olympiad was held in the city of Chiang Mai (Thailand) from November 30 to December 9, 2007. The International Council, consisting of team leaders, elected a president (Dr. Boonrucksar Soonthornthum, Thailand) and a secretary general (Dr. Chatief Kunjaya, Indonesia) for a five-year term.[2]

The second Olympiad was held in 2008, from August 19 to 28, in the city of Bandung (Indonesia). It was attended by representatives of 22 countries.

The third Olympiad was held in 2009, from October 17 to 27, in Tehran. An observation tour was conducted in the desert. Representatives of 20 countries took part in the Olympiad.

The fourth Olympiad was held in 2010, from September 12 to September 21, in Beijing. 114 participants of the Olympiad came from 23 countries.

The fifth Olympiad was held in 2011, from August 25 to September 4, in the Polish cities of Katowice, Chorzow and Krakow. For the first time the Olympiad was held in Europe. Representatives of 26 countries took part in the Olympiad. In Poland, the International Council elected a new president (Dr. Chatief Kunjaya, Indonesia) and a secretary general (Dr. Greg Stachowski, Poland). Regional coordinators were also elected (Dr. Thaís Mothé Diniz, Brazil, for America and Dr. Aniket Sule, India, for Asia).

The sixth Olympiad was held in 2012, from August 4 to 13. For the first time the Olympiad was held in America in the Brazilian cities of Rio de Janeiro and Vasoras. Representatives of 28 countries took part in the Olympiad.

The seventh Olympiad was held in 2013, from July 27 to August 4 in the Greek city of Volos. The competition was attended by 39 teams from 35 countries, including for the first time teams from the USA, New Zealand, Canada, Malaysia, Armenia, the Republic of Macedonia and Cyprus.

The fourteenth Olympiad was supposed to be held in Bogota, Colombia. However, due to the COVID-19 pandemic, the competition was moved to an online format and Colombia was moved to 2021. This competition was not named IOAA, but GeCAA (meaning Global e-Competition on Astronomy and Astrophysics) and did not count as the 14th IOAA. It was held 23rd September 2020 to 23rd October 2020. Estonia was the host country.


Number Year Host country Host city Absolute winner Countries Represented Website
1 2007   Thailand Chiang Mai   THA Suwun Suwunnarat 21
2 2008   Indonesia Bandung   IND Nitin Jain 22
3 2009   Iran Tehran   IND Nitin Jain 20
4 2010   China Beijing   POL Przemysław Mróz 23
5 2011   Poland Chorzów / Katowice / Krakow   CZE Stanislav Fort 26 IOAA 2011
6 2012   Brazil Rio de Janeiro / Vassouras   LTU Motiejus Valiūnas 28 IOAA 2012
7 2013   Greece Volos   ROM Denis Turcu 35
8 2014   Romania Suceava / Gura Humorului   ROM Denis Turcu 42
9 2015   Indonesia Magelang / Semarang   INA Joandy Leonata Pratama 41
10 2016   India Bhubaneswar   IND Ameya Patwardhan 42 IOAA 2016
11 2017   Thailand Phuket   SLO Aleksej Jurca 44 IOAA 2017
12 2018   China Beijing   RUS Stanislav Tsapaev 39 IOAA 2018
13 2019   Hungary Keszthely & Heviz   VIE Nguyễn Mạnh Quân 46 IOAA 2019
N/A[a] 2020   Estonia[b] N/A   CAN Zhening Li 40 GeCAA
14 2021   Colombia Bogotá (online)   RUS Maksim Permiakov 48 IOAA 2021
15 2022   Georgia Kutaisi TBD 47 IOAA 2022
16 2023   Portugal Lisbon TBD
17 2024   Kazakhstan TBD TBD
18 2025   United States Flagstaff, Arizona TBD
  1. ^ Due to the COVID-19 pandemic, IOAA 2020 was replaced by an online competition: the Global e-Competition on Astronomy and Astrophysics (GeCAA).
  2. ^ The GeCAA was organized by the IOAA International Board with extensive support from the Estonian Astronomy Olympiad Committee.


High-scoring participantsEdit

The following table lists multiple (triple and more) gold medal winners of IOAA with their ranks and corresponding years.

Name Team(s) Years
Denis Turcu Romania 2013 (1st) 2014 (1st)
Stanislav Fort Czech Republic 2010 (8th) 2011 (1st) 2012 (2nd)
Peter Kosec Slovakia 2010 (5th) 2011 (4th) 2012 (5th)
Daniil Dolgov Russia 2016 (8th) 2017 (3rd) 2018 (11th)
Jindřich Jelínek Czech Republic 2016 (9th) 2018 (5th) 2019 (7th)

Note: Several countries (e.g. India, Indonesia, Iran, Thailand) do not allow their students to contest in IOAA more than two times, even if they are eligible. Thus, statistics from those countries is not included in the table above.


  1. ^ "About IOAA".
  2. ^ "IOAA History | Bangladesh Olympiad on Astronomy and Astrophysics (BDOAA)". 2019-01-23. Retrieved 2021-09-28.