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(7821) 1991 AC

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(7821) 1991 AC

Summary

(7821) 1991 AC is an asteroid[1]. (7821) 1991 AC is known by 3 alternative names across languages and contexts.[2]

Key Facts

  • (7821) 1991 AC is credited with the discovery of Yoshio Kushida[3].
  • (7821) 1991 AC is credited with the discovery of Osamu Muramatsu[4].
  • (7821) 1991 AC's instance of is recorded as asteroid[5].
  • (7821) 1991 AC's site of astronomical discovery is recorded as Yatsugatake South Base Observatory[6].
  • (7821) 1991 AC's follows is recorded as 7820 IanLyon[7].
  • (7821) 1991 AC's followed by is recorded as (7822) 1991 CS[8].
  • (7821) 1991 AC's minor planet group is recorded as asteroid belt[9].
  • (7821) 1991 AC's parent astronomical body is recorded as Sun[10].
  • (7821) 1991 AC's provisional designation is recorded as 1991 AC[11].
  • (7821) 1991 AC's provisional designation is recorded as 1989 SA4[12].
  • (7821) 1991 AC's provisional designation is recorded as 1992 GT7[13].
  • (7821) 1991 AC's time of discovery or invention is recorded as +1991-01-08T00:00:00Z[14].
  • (7821) 1991 AC's Freebase ID is recorded as /m/0g51b2w[15].
  • (7821) 1991 AC's JPL Small-Body Database SPK-ID is recorded as 20007821[16].
  • (7821) 1991 AC's orbital eccentricity is recorded as {'amount': '+0.02'}[17].
  • (7821) 1991 AC's orbital eccentricity is recorded as {'amount': '+0.0161712'}[18].
  • (7821) 1991 AC's orbital eccentricity is recorded as {'amount': '+0.01412642188552443'}[19].
  • (7821) 1991 AC's absolute magnitude is recorded as {'amount': '+12.9'}[20].
  • (7821) 1991 AC's absolute magnitude is recorded as {'amount': '+13.05'}[21].
  • (7821) 1991 AC's orbital inclination is recorded as {'unit': 'Q28390', 'amount': '+2.87845'}[22].
  • (7821) 1991 AC's orbital inclination is recorded as {'unit': 'Q28390', 'amount': '+2.873594111881995'}[23].
  • (7821) 1991 AC's orbital period is recorded as {'unit': 'Q577', 'amount': '+4.91'}[24].
  • (7821) 1991 AC's orbital period is recorded as {'unit': 'Q573', 'amount': '+1794.698241567216'}[25].
  • (7821) 1991 AC's longitude of ascending node is recorded as {'unit': 'Q28390', 'amount': '+57.83428'}[26].
  • (7821) 1991 AC's longitude of ascending node is recorded as {'unit': 'Q28390', 'amount': '+57.79480929654502'}[27].

Body

Designation and Status

(7821) 1991 AC's instance of is recorded as asteroid[5].

Why It Matters

(7821) 1991 AC is known by 3 alternative names across languages and contexts.[2]

References

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

Direct Wikidata claims

  1. [5] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  2. [3] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  3. [4] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  4. [6] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  5. [7] ↑ . wikidata.org.
  6. [8] ↑ . wikidata.org.
  7. [9] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  8. [10] ↑ . wikidata.org.
  9. [11] ↑ . Minor Planet Center database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  10. [12] ↑ . Minor Planet Center database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  11. [13] ↑ . Minor Planet Center database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  12. [14] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  13. [15] ↑ . wikidata.org.
  14. [16] ↑ . JPL Small-Body Database. Retrieved . wikidata.org.
  15. [17] ↑ . wikidata.org.
  16. [18] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.
  17. [19] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  18. [20] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.
  19. [21] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  20. [22] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.
  21. [23] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  22. [24] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.
  23. [25] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  24. [26] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.
  25. [27] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.

Class ancestry

  1. [1] ↑ . Wikidata. wikidata.org.

Aggregate / graph-position facts

  1. [2] ↑ . 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). (7821) 1991 AC. Retrieved May 3, 2026, from https://4ort.xyz/entity/7821-1991-ac
MLA “(7821) 1991 AC.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/7821-1991-ac.
BibTeX @misc{4ortxyz_7821-1991-ac_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{(7821) 1991 AC}}, year = {2026}, url = {https://4ort.xyz/entity/7821-1991-ac}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): (7821) 1991 AC — https://4ort.xyz/entity/7821-1991-ac (retrieved 2026-05-03)

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