View source for International Olympiad on Astronomy and Astrophysics

{{Short description|High school astronomy competition}}
{{More citations needed|date=May 2020}}
{{Use dmy dates|date=September 2024}}
[[File:IOAA 2012 Official Opening.JPG|thumb|IOAA 2012 at Rio Planetarium, [[Rio de Janeiro]], Brazil]]
The '''International Olympiad on Astronomy and Astrophysics''' ('''IOAA''') is an annual [[astronomy]] and [[astrophysics]] [[Student competition|competition]] for [[high school]] students. It is one of the [[international science olympiad]]s.<ref name="about">{{Cite web|url=http://www.ioaastrophysics.org|title=About IOAA|language=en-US}}</ref>

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

== History ==
*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.<ref>{{Cite web |date=2007 |title=1st IOAA |url=http://ioaa.info/ioaa2007/%201st%20IOAA |url-status=live |access-date=2023-03-05 |website=ioaastrophysics.org |archive-url=https://web.archive.org/web/20081011224139/http://ioaa.info/ioaa2007/ |archive-date=2008-10-11 |language=en-US }}</ref>

*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]], [[Chorzów]] and [[Kraków]]. 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 [[Vassouras]]. 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 [[Bogotá]], 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 23 September 2020 to 23 October 2020. [[Estonia]] was the host country.

== Summary ==

{| class="wikitable"
!Number
!Year
!Host country
!Host city
!Absolute winner
!Countries Represented
!Winner Team
!Website
|-
|1
|2007
|{{flag|Thailand}}
|[[Chiang Mai]]
|{{THA}} Suwun Suwunnarat
|21
|
|* [https://web.archive.org/web/20081011224139/http://ioaa.info/ioaa2007/ 1st IOAA], 2007
|-
|2
|2008
|{{flag|Indonesia}}
|[[Bandung]]
|{{IND}} Nitin Jain
|22
|
|* [https://web.archive.org/web/20081106112145/http://www.ioaa2.itb.ac.id/ 2nd IOAA], 2008
|-
|3
|2009
|{{flag|Iran}}
|[[Tehran]]
| {{IND}} Nitin Jain
|20
|
|* [https://web.archive.org/web/20150125182633/http://ioaa2009.ir/ 3rd IOAA], 2009
|-
|4
|2010
|{{flag|China}}
|[[Beijing]]
| {{POL}} Przemysław Mróz
|23
|
|* [http://www.ioaa2010.org/ 4th IOAA]{{dead link|bot=InternetArchiveBot|date=January 2023}}, 2010
 |-
 |5
 |2011
 |{{flag|Poland}}
 |[[Chorzów]] / [[Katowice]] / [[Kraków]]
 | {{CZE}} Stanislav Fořt
 |26
 
|
|[http://www.ioaa2011.pl/ IOAA 2011]
 |-
 |6
 |2012
 |{{flag|Brazil}}
 |[[Rio de Janeiro]] / [[Vassouras]]
 | {{LTU}} Motiejus Valiūnas
 |28
 
|
|[https://web.archive.org/web/20120816054516/http://www.ioaa2012.ufrj.br/ IOAA 2012]
 |-
 |7
 |2013
 |{{flag|Greece}}
 |[[Volos]]
 |{{ROU}} Denis Turcu
 |35
 
|
|* [http://www.ioaa2013.gr/ 7th IOAA] {{Webarchive|url=https://web.archive.org/web/20130515113634/http://www.ioaa2013.gr/ |date=2013-05-15 }}, 2013
 |-
 |8
 |2014
 |{{flag|Romania}}
 |[[Suceava]] / [[Gura Humorului]]
 |{{ROU}} Denis Turcu
 |42
 
|
|
 |-
 |9
 |2015
 |{{flag|Indonesia}}
 |[[Magelang]] / [[Semarang]]
 |{{INA}} Joandy Leonata Pratama
 |41
 
|
|
 |-
 |10
 |2016
 |{{flag|India}}
 |[[Bhubaneswar]]
 |{{IND}} Ameya Patwardhan
 |42
 
|
|[http://www.ioaa2016.in/ IOAA 2016]
 |-
 |11
 |2017
 |{{flag|Thailand}}
 |[[Phuket Province|Phuket]]
 |{{SVN}} Aleksej Jurca
 |44
 
|
|[https://web.archive.org/web/20181204214442/https://ioaa2017.posn.or.th/ IOAA 2017]
 |-
 |12
 |2018
 |{{flag|China}}
 |[[Beijing]]
 |{{RUS}} Stanislav Tsapaev
 |39
 
|
|[http://ioaa2018.bjp.org.cn/ IOAA 2018] {{Webarchive|url=https://web.archive.org/web/20190525025512/http://ioaa2018.bjp.org.cn/ |date=2019-05-25 }}
 |-
 |13
 |2019
 |{{flag|Hungary}}
 |[[Keszthely]] & [[Hévíz]]
 |{{VIE}} Nguyễn Mạnh Quân
 |46
 
|
|[http://www.ioaa2019.hu/ IOAA 2019]
|-
|N/A{{efn|Due to the COVID-19 pandemic, IOAA 2020 was replaced by an online competition: the Global e-Competition on Astronomy and Astrophysics (GeCAA).}}
|2020
|{{flag|Estonia}}{{efn|The GeCAA was organized by the IOAA International Board with extensive support from the Estonian Astronomy Olympiad Committee.}}
|N/A
|{{CAN}} Zhening Li
|40
|{{flag|Canada}}
|[https://gecaa.ee/ GeCAA]
|-
 |14
 |2021
 |{{flag|Colombia}}
 |[[Bogotá]] (online)
 |{{RUS}} Maksim Permiakov
 |48
 
|{{flag|Russia}}
|[https://www.ioaa2021.com/ IOAA 2021]
 |-
 |15
 |2022
 |{{flag|Georgia}}
 |[[Kutaisi]]
 |{{ROU}} Vlad Ștefan Oros
 |45
 
|{{flag|Iran}}
|[http://ioaa2022.ge/ IOAA 2022]
 |-
 |16
 |2023
 |{{flag|Poland}}
 |[[Chorzów]] / [[Katowice]]
 |{{SVN}} Peter Andolšek
 |52
 
|{{flag|United Kingdom}}
|[https://ioaa2023.pl/ IOAA 2023]
 |-
 |17
 |2024
 |{{flag|Brazil}}
 |[[Vassouras]]
 |{{SVN}} Peter Andolšek
 |54
 
|{{flag|Iran}}
|[http://www.ioaa2024.on.br IOAA 2024]
|-
|18
 |2025
 |{{flag|India}}
 |[[Mumbai]]
 |Will be available after the event 
 |Soon
 
|
|Soon
|}
{{notelist}}

The 1st IOAA-Jr, for the students under 16 years of age was held in Romania from 30 October to 7 November 2022. The 2nd IOAA-Jr was held in [[Volos]], Greece from 24 to 30 September 2023, and its age restriction was lowered to students under 15.<ref>{{cite web |url=https://ioaajr2023.gr/ |website=2nd IOAA JR 2023 |access-date=1 October 2023}}</ref> The 3rd IOAA-Jr will be hosted by [[Kathmandu]], [[Nepal]] from 3 to 10 October 2024.

==Participating Countries==
Source: https://www.ioaastrophysics.org/participating-countries/
==Results==
Source: https://www.ioaastrophysics.org/results/

== Prize winners ==

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

{| class="wikitable sortable"
|-
! Name
! Team(s)
! colspan="4" | Years
|-
| Peter Andolšek
| [[Slovenia]]
|2021 (29th)
|2022 (10th)
|2023 (1st)
|2024 (1st)
|-
|Denis Turcu
| [[Romania]]
|2013 (1st)
|2014 (1st)
|
|
|-
| Stanislav Fořt
| [[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.

== References ==
{{reflist}}

==External links==
*{{official|https://www.ioaastrophysics.org/}}

{{International Science Olympiad}}

[[Category:Astronomy competitions]]
[[Category:International Science Olympiad]]