International Astronomical Union

association of professional astronomers
Organization scientific_organization Q6867
International Astronomical Union
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Summary

International Astronomical Union is a scientific organization[1]. It ranks in the top 5% of scientific organization entities by monthly Wikipedia readership (2,516 views/month).[2]

Key Facts

  • Field of work: astronomy[3]
  • Member of: International Council for Science[4], Committee on Space Research[5], International Science Council[6]
  • Country: France[7]
  • Instance of: international organization[8], nonprofit organization[9]
  • Official language: French[10], English[11]
  • Founder: Benjamin Baillaud[12]
  • Headquarters location: Paris[13]
  • Child organization or unit: IAU Working Group on Star Names[14], IAU Working Group on Cartographic Coordinates and Rotational Elements of the Planets and Satellites[15]
  • Commons category: International Astronomical Union[16]
  • Chairperson: Willy Benz[17]
  • Inception: January 1, 1919[18]
  • Official website: https://www.iau.org[19]
  • Topic's main category: Category:International Astronomical Union[20]
  • Described by source: Great Soviet Encyclopedia (1926–1947)[21]
  • Legal form: non-governmental organization[22]
  • Short name: IAU[23], UAI[24], ΔΑΕ[25], МАС[26], MAU[27], МАУ[28], ХАО[29], MUA[30]
  • Different from: International Astronautical Federation[31]
  • Total revenue: 1,708,000 euro[32]
  • Operating area: Earth[33]
  • Partnership with: UNESCO[34]

Body

Brands and Namesakes

Things named for International Astronomical Union include Julio Garavito Armero[35], a mathematician[36], 1865–1920[37], of Colombia[38], specialised in astronomy[39] and 5000 IAU[40], an asteroid[41].

Why It Matters

International Astronomical Union has Wikipedia articles in 30 language editions, a strong signal of global cultural recognition.[42] It is known by 53 alternative names across languages and contexts.[43]

Entities named for it include Julio Garavito Armero[35], a mathematician[36], 1865–1920[37], of Colombia[38], specialised in astronomy[39] and 5000 IAU[40], an asteroid[41].

References

Programmatic citations — every numbered marker resolves to a verifiable graph row below.

Direct Wikidata claims

  1. [7] ↑ . wikidata.org.
  2. [8] ↑ . wikidata.org.
  3. [9] ↑ . EU Transparency Register. Retrieved . transparency-register.europa.eu. Provenance: wikidata.org.
  4. [10] ↑ . wikidata.org.
  5. [11] ↑ . wikidata.org.
  6. [3] ↑ . wikidata.org.
  7. [12] ↑ . wikidata.org.
  8. [13] ↑ . iau.org. iau.org. Provenance: wikidata.org.
  9. [14] ↑ . wikidata.org.
  10. [15] ↑ . wikidata.org.
  11. [16] ↑ . wikidata.org.
  12. [4] ↑ . wikidata.org.
  13. [5] ↑ . cosparhq.cnes.fr. cosparhq.cnes.fr. Provenance: wikidata.org.
  14. [6] ↑ . council.science. Retrieved . council.science. Provenance: wikidata.org.
  15. [17] ↑ . iau.org. Retrieved . iau.org. Provenance: wikidata.org.
  16. [18] ↑ . wikidata.org.
  17. [19] ↑ . wikidata.org.
  18. [20] ↑ . wikidata.org.
  19. [21] ↑ . wikidata.org.
  20. [22] ↑ . Retrieved . wikidata.org.
  21. [23] ↑ . wikidata.org.
  22. [24] ↑ . wikidata.org.
  23. [25] ↑ . wikidata.org.
  24. [26] ↑ . wikidata.org.
  25. [27] ↑ . wikidata.org.
  26. [28] ↑ . wikidata.org.
  27. [29] ↑ . wikidata.org.
  28. [30] ↑ . wikidata.org.
  29. [31] ↑ . wikidata.org.
  30. [32] ↑ . EU Transparency Register. Retrieved . wikidata.org.
  31. [33] ↑ . wikidata.org.
  32. [34] ↑ . unesco.org. unesco.org. Provenance: wikidata.org.

Inverse relationships (entities pointing at this one)

  1. [35] ↑ . wikidata.org. → on this site
  2. [40] ↑ . wikidata.org. → on this site

Inline context (facts about related entities)

  1. [36] ↑ . Wikidata. wikidata.org. → on this site
  2. [37] ↑ . Wikidata. wikidata.org. → on this site
  3. [38] ↑ . Wikidata. wikidata.org. → on this site
  4. [39] ↑ . Wikidata. wikidata.org. → on this site
  5. [41] ↑ . Wikidata. wikidata.org. → on this site

Class ancestry

  1. [1] ↑ . Wikidata. wikidata.org.

Aggregate / graph-position facts

  1. [2] ↑ . Wikimedia Foundation. dumps.wikimedia.org.
  2. [42] ↑ . Wikidata sitelinks. wikidata.org.
  3. [43] ↑ . Wikidata aliases. wikidata.org.

📑 Cite this page

Use these citations when quoting this entity in research, articles, AI prompts, or wherever provenance matters. We aggregate Wikidata + Wikipedia + authoritative open-data sources; the stitched, scored, cross-referenced view is what 4ort.xyz contributes.

APA 4ort.xyz Knowledge Graph. (2026). International Astronomical Union. Retrieved October 14, 2026, from https://4ort.xyz/entity/international-astronomical-union
MLA “International Astronomical Union.” 4ort.xyz Knowledge Graph, 4ort.xyz, 14 Oct. 2026, https://4ort.xyz/entity/international-astronomical-union.
BibTeX @misc{4ortxyz_international-astronomical-union_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{International Astronomical Union}}, year = {2026}, url = {https://4ort.xyz/entity/international-astronomical-union}, note = {Accessed: 2026-10-14}}
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Edit History

Rolling log of changes to this entity's Wikidata record. Values shown reflect the current state of each edited property — follow the history link to see the precise diff for any edit.

  1. 9d ago · NGOgo · 2026-10-06 view diff on Wikidata ↗
    Instance of → scientific organization, international organization, nonprofit organization
    Total revenue → {'unit': 'Q4916', 'amount': '+1708000'}
    Claims rich → —
    "/* wbeditentity-update:0| */ QuickStatements 3.0 [[:toollabs:qs-dev/batch/58007|batch #58007]]: eu-transparency-finances"
  2. 9d ago · NGOgo · 2026-10-06 view diff on Wikidata ↗
    Sitelink count → 92
    Wikipedia languages → ['af', 'als', 'an', 'anp', 'ar', 'arz', 'ast', 'az', 'azb', 'bcl', 'be', 'be_x_o
    Eu transparency register id → 2054791101336-40
    Claims rich → —
    "/* wbeditentity-update:0| */ QuickStatements 3.0 [[:toollabs:qs-dev/batch/57969|batch #57969]]: New EU-IDs"
  3. 13w ago · Nyuhn · 2026-07-10 view diff on Wikidata ↗
    P14541 → 30ZU1Q
    "/* wbeditentity-update:0| */ QuickStatements 3.0 [[:toollabs:qs-dev/batch/40849|batch #40849]]: ZGBK ID"
  4. 15w ago · Daieuxetdailleurs · 2026-06-28 view diff on Wikidata ↗
    Francearchives agent id → 482867516
    "/* wbcreateclaim-create:1| */ Francearchives agent id: 482867516, #quickstatements; #temporary_batch_1782644922236"
  5. 15w ago · Printstream · 2026-06-26 view diff on Wikidata ↗
    Instance of → —
    Child organization or unit → IAU Working Group on Star Names, IAU Working Group on Cartographic Coordinates and Rotational Elements of the Planets and Satellites
    Member of → International Council for Science, Committee on Space Research, International Science Council
    Founder → Benjamin Baillaud
    + 32 other properties edited (see Wikidata diff for full list)
    "/* wbcreateclaim-create:1| */ P14536: 438494, #quickstatements; #temporary_batch_1782462304762"
Live feed via Wikidata EventStreams. New edits appear within minutes of being made on Wikidata.