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representing a global membership that includes both national scientific bodies and international scientific unions. They often encourage countries to become members of the IAU. The
Commission further seeks to development, information or improvement of astronomical education. Part of Commission 46, is Teaching Astronomy for Development (TAD) program in countries where there is currently very little astronomical education. Another program is named the Galileo Teacher Training Program (GTTP), is a project of the International Year of Astronomy 2009, among which
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468:(Italy). Thirty-two Commissions (referred to initially as Standing Committees) were appointed at the Brussels meeting and focused on topics ranging from relativity to minor planets. The reports of these 32 Commissions formed the main substance of the first General Assembly, which took place in Rome, Italy, 2–10 May 1922.
485:
The first 50 years of the Union's history are well documented. Subsequent history is recorded in the form of reminiscences of past IAU Presidents and
General Secretaries. Twelve of the fourteen past General Secretaries in the period 1964–2006 contributed their recollections of the Union's history in
313:
Among the key activities of the IAU is serving as a forum for scientific conferences. It sponsors nine annual symposia and holds a triannual
General Assembly that sets policy and includes various scientific meetings. The Union is best known for being the leading authority in assigning official names
602:
On budget matters (which fall into the second category), votes are weighted according to the relative subscription levels of the national members. A second category vote requires a turnout of at least two-thirds of national members to be valid. An absolute majority is sufficient for approval in any
471:
By the end of the first
General Assembly, ten additional nations (Australia, Brazil, Czechoslovakia, Denmark, the Netherlands, Norway, Poland, Romania, South Africa, and Spain) had joined the Union, bringing the total membership to 19 countries. Although the Union was officially formed eight months
309:
The IAU is composed of individual members, who include both professional astronomers and junior scientists, and national members, such as professional associations, national societies, or academic institutions. Individual members are organised into divisions, committees, and working groups centered
2828:
that will concentrate more resources on education activities for children and schools designed to advance sustainable global development. GTTP is also concerned with the effective use and transfer of astronomy education tools and resources into classroom science curricula. A strategic plan for the
2823:
Commission 46 is a
Committee of the Executive Committee of the IAU, playing a special role in the discussion of astronomy development with governments and scientific academies. The IAU is affiliated with the International Council of Scientific Unions (ICSU), a non-governmental organization
3948:
3054:." International Astronomical Union. Retrieved 26 May 2011. "Address: IAU – UAI Secretariat 98-bis Blvd Arago F–75014 PARIS FRANCE" and "The IAU Secretariat is located in the Institut d'Astrophysique de Paris, 2nd floor, offices n°270, 271 and 283."
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The seven initial member states were
Belgium, Canada, France, Great Britain, Greece, Japan, and the United States, soon to be followed by Italy and Mexico. The first executive committee consisted of
372:. Its main objective is to promote and safeguard the science of astronomy in all its aspects through international cooperation. The IAU maintains friendly relations with organizations that include
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401:(WGSN), which catalogues and standardizes proper names for stars. The IAU is also responsible for the system of astronomical telegrams which are produced and distributed on its behalf by the
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The right to vote on matters brought before the
Assembly varies according to the type of business under discussion. The Statutes consider such business to be divided into two categories:
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582:, which comprises all members. The Assembly determines IAU policy, approves the Statutes and By-Laws of the Union (and amendments proposed thereto) and elects various committees.
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on particular subdisciplines, subjects, or initiatives. As of May 2024, the Union had 85 national members and 12,734 individual members, spanning 90 countries and territories.
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in all aspects, including promoting astronomical research, outreach, education, and development through global cooperation. It was founded on 28 July 1919 in
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IAU Information
Bulletin No. 100. Six past IAU Presidents in the period 1976–2003 also contributed their recollections in IAU Information Bulletin No. 104.
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This organisation has many working groups. For example, the
Working Group for Planetary System Nomenclature (WGPSN), which maintains the
318:, and for setting uniform definitions for astronomical principles. It also coordinates with national and international partners, such as
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564:
4219:
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598:(such as Statute revision and procedural questions), upon which voting is restricted to the representatives of national members.
4952:
4942:
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4328:
4065:
4043:
3584:"The Communicating Astronomy with the Public journal: A study from the IAU Division XII Commission 55 CAPjournal Working Group"
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540:
524:, who are professional astronomers from 102 countries worldwide; 81.7% of individual members are male, while 18.3% are female.
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In 2007, the
Communicating Astronomy with the Public Journal Working Group prepared a study assessing the feasibility of the
4120:
3051:
531:, professional astronomical communities representing their country's affiliation with the IAU. National members include the
4422:
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3290:
Gingerich, Owen (1999). "The Copernican Quinquecentennial and Its Predecessors: Historical Insights and National Agendas".
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after the end of World War I, international collaboration in astronomy had been strong in the pre-war era (e.g., the
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also operates under the IAU, and is a "clearinghouse" for all non-planetary or non-moon bodies in the Solar System.
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73:
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Since 1922, the IAU General Assembly meets every three years, except for the period between 1938 and 1948, due to
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430:
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The IAU was founded on 28 July 1919, at the Constitutive Assembly of the International Research Council (now the
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1900:
572:
453:
4266:
4957:
3025:"You Won't Meet the Beatles in Space – Plan to Liven Official Naming of Stars and Planets Hits Clunky Notes"
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394:
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1819:. After a Polish request in 1967, and by a controversial decision of the then President of the IAU, an
592:(as determined by the Executive Committee), upon which voting is restricted to individual members, and
349:. Among other activities, it acts as the recognized authority for assigning designations and names to
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2002:
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330:
32:
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1828:
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406:
350:
315:
3107:
History of the IAU : the birth and first half-century of the International Astronomical Union
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501:
271:
218:
3582:
Russo, P.; Christensen, L. L.; Iau Commission 55 Capjournal Working Group (1 June 2008).
3493:
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516:
The IAU includes member organizations from 82 countries (designated as national members).
3595:
3583:
3519:"Astronomy for the Developing World, Building from the IYA 2009, Strategic Plan 2010–20"
3413:
3303:
3154:
3072:
329:, which is composed of international scholarly and scientific institutions and national
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The International Astronomical Union is an international association of professional
213:
3532:
512:
500:, is poised to play a critical role in developing the legislation and framework for
3716:
3195:
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2645:
2593:
2562:
2536:
2158:
1816:
1495:
966:
734:
3273:"Moon's resources could be 'destroyed by thoughtless exploitation', NASA warned"
2790:
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1616:
1456:
980:
953:
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345:, at the PhD level and beyond, active in professional research and education in
3518:
425:, Belgium. Two subsidiaries of the IAU were also created at this assembly: the
2554:
2200:
2006:
1804:
1765:
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1019:
886:
708:
682:
607:. An equality of votes is resolved by the vote of the President of the Union.
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1932:
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in their membership. The IAU has its head office on the second floor of the
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since 1887, and the International Union for Solar research since 1904).
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2020:
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1827:, Poland, to commemorate the 500th anniversary of the birth of
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2995:
2932:"Geographical and Gender Distribution of Individual Members"
3621:
Statutes of the IAU, VII General Assembly (1948), pp. 13–15
1831:, soon after the regular 1973 GA had been held in Sydney.
3460:Колчинский И. Г., Корсунь А. А., Родригес М. Г. (1977).
3143:
Publications of the Astronomical Society of the Pacific
253:
5039:
International scientific organizations based in Europe
3634:
555:(Argentina), the Council of German Observatories, the
435:
International Central Bureau of Astronomical Telegrams
3688:
3554:"Proceedings of the International Astronomical Union"
3139:"The History of the International Astronomical Union"
496:
Starting in 2024, the Union, in partnership with the
3214:"Twinkle, Twinkle Little [Insert Name Here]"
4808:
4590:
4532:
3796:
2855:
Proceedings of the International Astronomical Union
603:vote, except for Statute revision which requires a
520:As of 1 August 2019, the IAU has a total of 13,701
452:(General Secretary, UK), and four vice presidents:
248:
224:
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185:
173:
159:
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135:
117:
109:
3370:"Homepage - IAU General Assembly 2024 - Cape Town"
2909:
2907:
553:National Scientific and Technical Research Council
78:National members from 85 countries as of May 2023
5004:Members of the International Council for Science
2862:Communicating Astronomy with the Public Journal
3774:
3356:"International Astronomical Union | IAU"
3196:"IAU Information Bulletin No. 104, June 2009"
3179:"IAU Information Bulletin No. 100, July 2007"
3132:
3130:
8:
5044:Members of the International Science Council
5019:Scientific organizations established in 1919
549:National Research Foundation of South Africa
377:
48:
4994:International organizations based in France
3608:: CS1 maint: numeric names: authors list (
3478:) CS1 maint: multiple names: authors list (
284:international non-governmental organization
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3474:: CS1 maint: location missing publisher (
365:, etc.) and any surface features on them.
47:
31:"IAU" redirects here. For other uses, see
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590:issues of a "primarily scientific nature"
561:Royal Astronomical Society of New Zealand
403:Central Bureau for Astronomical Telegrams
5014:Scientific organizations based in France
2971:"International Astronomical Union | IAU"
1833:
535:, the Chinese Astronomical Society, the
4999:International professional associations
3695:
3588:Communicating Astronomy with the Public
2903:
286:(INGO) with the objective of advancing
56:Union astronomique internationale (UAI)
27:Association of professional astronomers
5034:International scientific organizations
3601:
3467:
2946:"International Astronomical Union|IAU"
49:International Astronomical Union (IAU)
40:International Astronautical Federation
2829:period 2010–2020 has been published.
2819:Commission 46: Education in astronomy
2328:XXXIIIrd IAU General Assembly (33rd)
2254:XXVIIIth IAU General Assembly (28th)
578:The sovereign body of the IAU is its
489:In 2015 and 2019, the Union held the
7:
3533:"CAPjournal Rosetta Special Out Now"
3462:Астрономы. Биографический справочник
2849:In 2004 the IAU contracted with the
2342:XXXIVth IAU General Assembly (34th)
2314:XXXIInd IAU General Assembly (32nd)
2240:XXVIIth IAU General Assembly (27th)
2180:XXIIIrd IAU General Assembly (23rd)
2106:XVIIIth IAU General Assembly (18th)
3790:International Science Council (ISC)
3212:Overbye, Dennis (2 December 2016).
2300:XXXIst IAU General Assembly (31st)
2268:XXIXth IAU General Assembly (29th)
2226:XXVIth IAU General Assembly (26th)
2194:XXIVth IAU General Assembly (24th)
2166:XXIInd IAU General Assembly (22nd)
2088:XVIIth IAU General Assembly (17th)
2028:XIIIth IAU General Assembly (13th)
3494:"International Astronomical Union"
3464:(in Russian). Киев: Наукова Думка.
3137:Adams, Walter S. (February 1949).
2286:XXXth IAU General Assembly (30th)
2212:XXVth IAU General Assembly (25th)
2152:XXIst IAU General Assembly (21st)
2120:XIXth IAU General Assembly (19th)
2074:XVIth IAU General Assembly (16th)
2042:XIVth IAU General Assembly (14th)
2014:XIIth IAU General Assembly (12th)
1954:VIIIth IAU General Assembly (8th)
1821:Extraordinary IAU General Assembly
545:National Academies (United States)
475:Astronomische Gesellschaft Katalog
25:
5029:Standards organizations in France
2358:List of the presidents of the IAU
2134:XXth IAU General Assembly (20th)
2060:XVth IAU General Assembly (15th)
1996:XIth IAU General Assembly (11th)
1940:VIIth IAU General Assembly (7th)
1880:IIIrd IAU General Assembly (3rd)
565:Royal Swedish Academy of Sciences
379:Institut d'Astrophysique de Paris
276:Union astronomique internationale
3746:
3734:
3722:
3710:
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3440:International Astronomical Union
3342:"Extraordinary General Assembly"
3069:International Astronomical Union
3000:International Astronomical Union
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1982:Xth IAU General Assembly (10th)
1968:IXth IAU General Assembly (9th)
1926:VIth IAU General Assembly (6th)
1894:IVth IAU General Assembly (4th)
1862:IInd IAU General Assembly (2nd)
1797:
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264:International Astronomical Union
235:
212:
90: States with interim status
72:
63:
3271:McKie, Robin (6 January 2024).
3065:"Centres – Minor Planet Center"
2883:Astronomical naming conventions
1912:Vth IAU General Assembly (5th)
1848:Ist IAU General Assembly (1st)
541:Indian National Science Academy
391:astronomical naming conventions
3657:XXVIIIth General Assembly 2012
1823:was held in September 1973 in
397:for planetary bodies, and the
1:
5024:1919 establishments in France
3684:XXXIIst General Assembly 2024
3652:XXVIIth General Assembly 2009
2888:List of proper names of stars
533:Australian Academy of Science
427:International Time Commission
419:International Science Council
370:International Science Council
327:International Science Council
5009:Organizations based in Paris
3679:XXXIst General Assembly 2022
3669:XXIXth General Assembly 2015
3647:XXVIth General Assembly 2006
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2030:
2016:
1998:
1984:
1970:
1956:
1942:
1928:
1914:
1896:
1882:
1864:
1850:
527:Membership also includes 82
384:14th arrondissement of Paris
3674:XXXth General Assembly 2018
1752:Terminated national members
569:Russian Academy of Sciences
399:Working Group on Star Names
368:The IAU is a member of the
325:The IAU is a member of the
5060:
3562:Cambridge University Press
3436:"Past Executive Committee"
3111:Kluwer Academic Publishers
2878:List of astronomy acronyms
2851:Cambridge University Press
2667:
2517:
2367:
557:Royal Astronomical Society
537:French Academy of Sciences
433:in Paris, France, and the
322:, to fulfill its mission.
29:
3558:Cambridge Journals Online
3414:"iau2410 — Press Release"
3392:"iau2410 — Press Release"
1836:
478:projects since 1868, the
431:International Time Bureau
196:12,734 individual members
71:
62:
53:
3866:Bosnia & Herzegovina
3105:Blaauw, Adriaan (1994).
2664:
2514:
2392:William Wallace Campbell
1839:
611:List of national members
573:Science Council of Japan
54:
38:Not to be confused with
4989:Astronomy organizations
3247:"IAU100 Name ExoWorlds"
502:lunar industrialization
123:; 105 years ago
2893:Planetary nomenclature
2846:
2783:Silvia Torres-Peimbert
559:(United Kingdom), the
517:
480:Astrographic Catalogue
395:planetary nomenclature
378:
275:
102: Suspended states
2840:
575:, among many others.
515:
448:(President, France),
331:academies of sciences
219:Debra Meloy Elmegreen
96: Observer states
3251:IAU100:Under One Sky
2845:issue 19, March 2016
2633:Robert Hanbury Brown
2470:Harold Spencer Jones
1059:United Arab Emirates
437:initially seated in
316:astronomical objects
314:and designations to
33:IAU (disambiguation)
3662:28 May 2019 at the
3596:2008ca07.conf..190R
3304:1999Osir...14...37G
3155:1949PASP...61....5A
2542:Victor Ambartsumian
1829:Nicolaus Copernicus
605:two-thirds majority
407:Minor Planet Center
374:amateur astronomers
192:85 national members
84: Member states
50:
3969:Dominican Republic
3218:The New York Times
3030:The New York Times
2915:"National Members"
2847:
2796:Ewine van Dishoeck
2744:Catherine Cesarsky
2679:Alexandr Boyarchuk
2509:André-Louis Danjon
2418:Frank Watson Dyson
1811:General Assemblies
522:individual members
518:
4976:
4975:
3023:(4 August 2014).
2841:Cover picture of
2826:Hands-On Universe
2816:
2815:
2431:Frank Schlesinger
2379:Benjamin Baillaud
2355:
2354:
2235:, Czech Republic
2207:, United Kingdom
2055:, United Kingdom
2037:, Czechoslovakia
1875:, United Kingdom
596:all other matters
446:Benjamin Baillaud
260:
259:
228:General Secretary
16:(Redirected from
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3635:Official website
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3416:. 16 August 2024
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3394:. 31 August 2023
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3071:. Archived from
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2405:Willem de Sitter
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2009:, United States
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462:Georges Lecointe
454:William Campbell
381:
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298:and is based in
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4470:British Academy
4443:Science Academy
4349:Slovak Republic
4250:North Macedonia
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3664:Wayback Machine
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3075:on 8 April 2020
3063:
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3058:
3052:IAU Secretariat
3049:
3045:
3035:
3033:
3021:Overbye, Dennis
3019:
3018:
3014:
3004:
3002:
2996:"About the IAU"
2994:
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2952:
2944:
2943:
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2905:
2901:
2874:
2853:to publish the
2835:
2821:
2809:Debra Elmegreen
2801:
2800:(2021–present)
2788:
2775:
2762:
2757:Robert Williams
2749:
2736:
2723:
2710:
2697:
2684:
2671:
2659:Yoshihide Kozai
2651:
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2625:
2612:
2599:
2586:
2581:Bengt Strömgren
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2483:Bertil Lindblad
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2423:
2410:
2397:
2384:
2371:
2360:
2323:, South Africa
2023:, West Germany
1991:, Soviet Union
1813:
1798:
1796:
1792:North Macedonia
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4465:United Kingdom
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3628:
3627:External links
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3427:
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3312:10.1086/649299
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2607:Adriaan Blaauw
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2309:, South Korea
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1483:United Kingdom
1472:
1459:
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1394:
1381:
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1355:
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659:
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618:
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498:United Nations
466:Annibale Riccò
429:seated at the
414:
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338:
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258:
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175:Region served
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4533:Transnational
4531:
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4482:United States
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3949:Côte d'Ivoire
3947:
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3144:
3140:
3133:
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3127:
3122:
3120:0-7923-2979-1
3116:
3112:
3109:. Dordrecht:
3108:
3101:
3099:
3097:
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2734:
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2721:
2719:
2718:Franco Pacini
2714:
2708:
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2701:
2695:
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2568:Otto Heckmann
2564:
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2174:
2171:
2165:
2164:
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2128:
2125:
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2118:
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2100:
2096:
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2054:
2050:
2047:
2041:
2040:
2036:
2033:
2027:
2026:
2022:
2019:
2013:
2012:
2008:
2004:
2001:
1995:
1994:
1990:
1987:
1981:
1980:
1976:
1973:
1967:
1966:
1962:
1959:
1953:
1952:
1948:
1945:
1939:
1938:
1934:
1931:
1925:
1924:
1920:
1917:
1911:
1910:
1906:
1905:Massachusetts
1902:
1899:
1893:
1892:
1888:
1885:
1879:
1878:
1874:
1870:
1867:
1861:
1860:
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1835:
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1692:
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1679:
1677:
1666:
1664:
1653:
1651:
1640:
1638:
1627:
1626:
1623:South America
1622:
1618:
1607:
1605:
1594:
1593:
1589:
1585:
1584:United States
1574:
1571:
1560:
1558:
1547:
1544:
1533:
1530:
1519:
1517:
1506:
1505:
1502:North America
1501:
1497:
1486:
1484:
1473:
1471:
1460:
1458:
1447:
1445:
1434:
1432:
1421:
1419:
1408:
1406:
1395:
1393:
1382:
1380:
1369:
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1356:
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1330:
1328:
1317:
1315:
1304:
1302:
1291:
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1263:
1252:
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1239:
1237:
1226:
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1198:
1187:
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1172:
1161:
1159:
1148:
1146:
1135:
1133:
1122:
1120:
1109:
1107:
1096:
1094:
1083:
1082:
1078:
1073:
1062:
1060:
1049:
1047:
1036:
1034:
1023:
1021:
1010:
1008:
997:
995:
984:
982:
971:
968:
957:
955:
944:
941:
930:
928:
917:
915:
904:
901:
890:
888:
877:
875:
864:
862:
851:
849:
838:
835:
824:
822:
811:
809:
798:
795:
784:
782:
771:
769:
758:
756:
745:
744:
740:
736:
725:
723:
712:
710:
699:
697:
686:
684:
673:
671:
660:
658:
647:
645:
634:
632:
621:
620:
616:
610:
608:
606:
597:
594:
591:
588:
587:
586:
583:
581:
576:
574:
570:
566:
562:
558:
554:
550:
546:
542:
538:
534:
530:
525:
523:
514:
507:
505:
503:
499:
494:
492:
491:NameExoWorlds
487:
483:
481:
477:
476:
469:
467:
463:
459:
455:
451:
450:Alfred Fowler
447:
442:
440:
436:
432:
428:
424:
420:
412:
410:
408:
404:
400:
396:
392:
387:
385:
380:
375:
371:
366:
364:
360:
356:
352:
348:
344:
336:
334:
332:
328:
323:
321:
317:
311:
307:
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301:
297:
293:
289:
285:
281:
277:
273:
269:
265:
255:
251:
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238:
233:
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206:
200:
190:
184:
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145:
141:
138:
134:
120:
116:
112:
108:
75:
70:
66:
61:
57:
52:
46:
41:
34:
19:
4614:
4593:associations
4497:Vatican City
4359:South Africa
4324:Saudi Arabia
3900:Burkina Faso
3753:Solar System
3604:cite journal
3587:
3577:
3565:. Retrieved
3557:
3548:
3536:. Retrieved
3527:
3513:
3501:. Retrieved
3497:
3488:
3461:
3455:
3445:18 September
3443:. Retrieved
3439:
3430:
3418:. Retrieved
3408:
3396:. Retrieved
3386:
3374:. Retrieved
3364:
3350:
3336:
3295:
3291:
3285:
3277:The Observer
3276:
3266:
3254:. Retrieved
3250:
3241:
3229:. Retrieved
3217:
3207:
3190:
3173:
3146:
3142:
3106:
3077:. Retrieved
3073:the original
3068:
3059:
3046:
3034:. Retrieved
3028:
3015:
3003:. Retrieved
2999:
2990:
2978:. Retrieved
2974:
2965:
2953:. Retrieved
2949:
2940:
2865:
2861:
2859:
2854:
2848:
2842:
2833:Publications
2822:
2787:(2018–2021)
2774:(2015–2018)
2761:(2012–2015)
2748:(2009–2012)
2735:(2006–2009)
2731:Ronald Ekers
2722:(2003–2006)
2709:(2000–2003)
2705:Robert Kraft
2696:(1997–2000)
2683:(1994–1997)
2670:(1991–1994)
2650:(1988–1991)
2646:Jorge Sahade
2637:(1985–1988)
2624:(1982–1985)
2611:(1979–1982)
2598:(1976–1979)
2594:Leo Goldberg
2585:(1973–1976)
2572:(1970–1973)
2559:(1967–1970)
2546:(1964–1967)
2533:(1961–1964)
2520:(1958–1961)
2500:(1955–1958)
2487:(1952–1955)
2474:(1948–1952)
2461:(1944–1948)
2448:(1938–1944)
2435:(1935–1938)
2422:(1932–1935)
2409:(1928–1932)
2396:(1925–1928)
2383:(1922–1925)
2370:(1919–1922)
2361:
2221:, Australia
2161:, Argentina
2159:Buenos Aires
2069:, Australia
1820:
1817:World War II
1814:
1496:Vatican City
967:Saudi Arabia
735:South Africa
601:
595:
589:
584:
579:
577:
528:
526:
521:
519:
495:
488:
484:
473:
470:
443:
434:
426:
416:
388:
367:
340:
324:
312:
308:
279:
267:
263:
261:
187:Membership
160:Headquarters
128:28 July 1919
121:28 July 1919
110:Abbreviation
55:
45:
4403:Switzerland
4398:Switzerland
4287:Philippines
4240:New Zealand
4235:Netherlands
4116:South Korea
4111:North Korea
3979:El Salvador
3741:Outer space
3729:Spaceflight
3567:1 September
3498:www.iau.org
2975:www.iau.org
2950:www.iau.org
2866:CAP Journal
2843:CAP Journal
2770:Norio Kaifu
2620:Vainu Bappu
2496:Otto Struve
1746:(suspended)
1718:(suspended)
1617:New Zealand
1457:Switzerland
1314:Netherlands
1074:(suspended)
981:South Korea
969:(suspended)
954:Philippines
942:(suspended)
940:North Korea
902:(suspended)
836:(suspended)
796:(suspended)
508:Composition
458:Frank Dyson
441:, Denmark.
343:astronomers
4983:Categories
4809:Affiliated
4591:Unions and
4492:Uzbekistan
4413:Tajikistan
4339:Seychelles
4220:Mozambique
4210:Montenegro
4163:Madagascar
4158:Luxembourg
4101:Kazakhstan
3944:Costa Rica
3841:Bangladesh
3836:Azerbaijan
3503:14 January
3376:24 October
3149:(358): 5.
3036:11 October
3005:11 October
2955:24 October
2899:References
2555:Pol Swings
2295:, Austria
2201:Manchester
2007:California
1977:, Ireland
1805:Uzbekistan
1766:Azerbaijan
1732:(observer)
1704:(observer)
1529:Costa Rica
1020:Tajikistan
887:Kazakhstan
709:Mozambique
683:Madagascar
571:, and the
493:contests.
439:Copenhagen
421:) held in
136:Founded at
4502:Venezuela
4376:Sri Lanka
4344:Singapore
4178:Mauritius
4153:Lithuania
4056:Indonesia
4029:Guatemala
3826:Australia
3816:Argentina
3705:Astronomy
3470:cite book
3420:16 August
3398:16 August
3328:144982060
3298:: 50–51.
3226:0362-4331
2362:Sources.
2321:Cape Town
2249:, Brazil
2173:The Hague
2141:Baltimore
2127:New Delhi
2115:, Greece
2101:, Canada
2083:, France
1935:, Sweden
1933:Stockholm
1921:, France
1901:Cambridge
1869:Cambridge
1744:Venezuela
1637:Argentina
1604:Australia
1572:(interim)
1545:(interim)
1531:(interim)
1301:Lithuania
821:Indonesia
363:asteroids
347:astronomy
288:astronomy
244:(interim)
205:President
180:Worldwide
118:Formation
4562:CODESRIA
4517:Zimbabwe
4423:Thailand
4418:Tanzania
4354:Slovenia
4304:Portugal
4272:Pakistan
4205:Mongolia
4173:Malaysia
4034:Honduras
3994:Ethiopia
3989:Eswatini
3939:Colombia
3905:Cameroon
3895:Bulgaria
3878:Botswana
3797:National
3660:Archived
3538:28 March
3079:20 April
2872:See also
2529:Jan Oort
2351:, Chile
2349:Santiago
2337:, Italy
2275:Honolulu
2263:, China
2189:, Japan
2145:Mainland
2129:, India
2095:Montreal
2081:Grenoble
2049:Brighton
2003:Berkeley
1963:, Italy
1857:, Italy
1837:Meeting
1689:Colombia
1543:Honduras
1418:Slovenia
1405:Slovakia
1353:Portugal
1119:Bulgaria
1033:Thailand
927:Mongolia
914:Malaysia
657:Ethiopia
423:Brussels
337:Function
292:Brussels
282:) is an
140:Brussels
4811:members
4547:AASSREC
4535:members
4507:Vietnam
4487:Uruguay
4460:Ukraine
4448:TÜBİTAK
4433:Tunisia
4329:Senegal
4309:Romania
4245:Nigeria
4225:Namibia
4215:Morocco
4195:Moldova
4188:COMECSO
4148:Lesotho
4143:Lebanon
4086:Jamaica
4071:Ireland
4039:Hungary
4014:Germany
4009:Georgia
3999:Finland
3984:Estonia
3964:Denmark
3861:Bolivia
3851:Belgium
3846:Belarus
3831:Austria
3821:Armenia
3806:Albania
3799:members
3691:Portals
3592:Bibcode
3590:: 190.
3300:Bibcode
3151:Bibcode
2665:
2515:
2261:Beijing
2205:England
2053:England
2021:Hamburg
1873:England
1730:Uruguay
1702:Ecuador
1650:Bolivia
1590:Oceania
1470:Ukraine
1366:Romania
1262:Ireland
1249:Iceland
1236:Hungary
1210:Germany
1184:Finland
1171:Estonia
1158:Denmark
1145:Czechia
1132:Croatia
1106:Belgium
1093:Austria
1072:Vietnam
900:Lebanon
794:Georgia
755:Armenia
722:Nigeria
696:Morocco
631:Algeria
413:History
382:in the
359:planets
296:Belgium
254:IAU.org
249:Website
144:Belgium
126: (
113:IAU/UAI
4938:IUVSTA
4765:IUPsyS
4755:IUPHAR
4750:IUPESM
4710:IUHPST
4690:IUFoST
4577:OSSREA
4567:FLACSO
4557:CLACSO
4512:Zambia
4455:Uganda
4438:Turkey
4408:Taiwan
4393:Sweden
4334:Serbia
4319:Rwanda
4314:Russia
4299:Poland
4277:Panama
4255:Norway
4200:Monaco
4183:Mexico
4168:Malawi
4138:Latvia
4096:Jordan
4076:Israel
4024:Greece
4004:France
3910:Canada
3888:ANPOCS
3883:Brazil
3811:Angola
3326:
3320:301960
3318:
3292:Osiris
3256:6 June
3231:6 June
3224:
3117:
2980:2 July
2293:Vienna
2279:Hawaii
2233:Prague
2219:Sydney
2113:Patras
2099:Quebec
2067:Sydney
2035:Prague
1989:Moscow
1975:Dublin
1947:Zürich
1887:Leiden
1843:Venue
1825:Warsaw
1802:
1789:
1776:
1763:
1741:
1727:
1713:
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1663:Brazil
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1567:
1557:Mexico
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1516:Canada
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1493:
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1444:Sweden
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1428:
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1392:Serbia
1389:
1379:Russia
1376:
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1350:
1340:Poland
1337:
1327:Norway
1324:
1311:
1298:
1288:Latvia
1285:
1272:
1259:
1246:
1233:
1223:Greece
1220:
1207:
1197:France
1194:
1181:
1168:
1155:
1142:
1129:
1116:
1103:
1090:
1079:Europe
1069:
1056:
1046:Turkey
1043:
1030:
1017:
1007:Taiwan
1004:
991:
978:
964:
951:
937:
924:
911:
897:
884:
874:Jordan
871:
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848:Israel
845:
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781:Cyprus
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617:Africa
567:, the
563:, the
551:, the
547:, the
543:, the
539:, the
460:(UK),
456:(US),
405:. The
320:UNESCO
304:France
272:French
168:France
100:
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4923:IIASA
4898:ICSTI
4888:ICLAS
4883:ICIAM
4823:AASSA
4795:WAPOR
4785:IUTOX
4780:IUTAM
4775:IUSSP
4745:IUPAP
4740:IUPAC
4735:IUPAB
4720:IUMRS
4695:IUFRO
4675:IUBMB
4670:ISPRS
4645:INQUA
4610:IASSA
4381:Sudan
4371:Spain
4230:Nepal
4121:KSSRC
4106:Kenya
4091:Japan
4081:Italy
4049:ICSSR
4044:India
4019:Ghana
3974:Egypt
3927:China
3922:Chile
3915:SSHRC
3856:Benin
3717:Stars
3324:S2CID
3316:JSTOR
3199:(PDF)
3182:(PDF)
2345:2030
2331:2027
2317:2024
2307:Busan
2303:2022
2289:2018
2271:2015
2257:2012
2243:2009
2229:2006
2215:2003
2197:2000
2187:Kyoto
2183:1997
2169:1994
2155:1991
2137:1988
2123:1985
2109:1982
2091:1979
2077:1976
2063:1973
2045:1970
2031:1967
2017:1964
1999:1961
1985:1958
1971:1955
1957:1952
1943:1948
1929:1938
1919:Paris
1915:1935
1897:1932
1883:1928
1865:1925
1851:1922
1840:Year
1676:Chile
1431:Spain
1275:Italy
994:Syria
861:Japan
808:India
768:China
670:Ghana
644:Egypt
355:stars
300:Paris
164:Paris
4963:TWAS
4953:SSRC
4933:ISDE
4913:IFLA
4908:IFIP
4903:IFDO
4873:IASC
4868:IAHR
4863:IAAP
4848:ECPR
4843:EADI
4833:ASTC
4828:ACSS
4790:URSI
4770:IUSS
4760:IUPS
4730:IUNS
4725:IUMS
4715:IUIS
4705:IUGS
4700:IUGG
4685:IUCr
4680:IUBS
4665:ISEE
4655:IPSA
4650:IPRA
4630:IFSM
4605:IALS
4552:CASS
4542:ACSS
4475:ESRC
4428:Togo
4386:SNAS
4364:HSRC
4292:PSSC
4282:Peru
4267:Oman
4133:Laos
4126:KAST
4066:Iraq
4061:Iran
3954:Cuba
3932:CASS
3610:link
3569:2015
3540:2016
3505:2022
3480:link
3476:link
3447:2018
3422:2024
3400:2024
3378:2023
3258:2022
3233:2022
3222:ISSN
3115:ISBN
3081:2016
3038:2016
3007:2016
2982:2021
2957:2023
2335:Rome
1961:Rome
1855:Rome
1779:Cuba
1716:Peru
834:Iran
741:Asia
393:and
262:The
154:INGO
150:Type
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