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(6491) 1991 OA

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(6491) 1991 OA

Summary

(6491) 1991 OA is a potentially hazardous asteroid[1]. (6491) 1991 OA draws 5 Wikipedia views per month (potentially_hazardous_asteroid category, ranking #33 of 147).[2]

Key Facts

  • (6491) 1991 OA is credited with the discovery of Henry E. Holt[3].
  • (6491) 1991 OA's instance of is recorded as potentially hazardous asteroid[4].
  • (6491) 1991 OA's instance of is recorded as near-Earth object[5].
  • (6491) 1991 OA's instance of is recorded as near-Earth asteroid[6].
  • (6491) 1991 OA's site of astronomical discovery is recorded as Palomar Observatory[7].
  • (6491) 1991 OA's follows is recorded as (6490) 1991 NR2[8].
  • (6491) 1991 OA's followed by is recorded as (6492) 1991 OH1[9].
  • (6491) 1991 OA's minor planet group is recorded as Amor asteroid[10].
  • (6491) 1991 OA's parent astronomical body is recorded as Sun[11].
  • (6491) 1991 OA's provisional designation is recorded as 1991 OA[12].
  • (6491) 1991 OA's time of discovery or invention is recorded as +1991-07-16T00:00:00Z[13].
  • (6491) 1991 OA's Freebase ID is recorded as /m/0c01sl6[14].
  • (6491) 1991 OA's JPL Small-Body Database SPK-ID is recorded as 20006491[15].
  • (6491) 1991 OA's orbital eccentricity is recorded as {'amount': '+0.5904'}[16].
  • (6491) 1991 OA's orbital eccentricity is recorded as {'amount': '+0.5912183'}[17].
  • (6491) 1991 OA's orbital eccentricity is recorded as {'amount': '+0.5920989723391571'}[18].
  • (6491) 1991 OA's absolute magnitude is recorded as {'amount': '+18.9'}[19].
  • (6491) 1991 OA's absolute magnitude is recorded as {'amount': '+18.72'}[20].
  • (6491) 1991 OA's orbital inclination is recorded as {'unit': 'Q28390', 'amount': '+5.94863'}[21].
  • (6491) 1991 OA's orbital inclination is recorded as {'unit': 'Q28390', 'amount': '+6.153287208481672'}[22].
  • (6491) 1991 OA's orbital period is recorded as {'unit': 'Q577', 'amount': '+3.95'}[23].
  • (6491) 1991 OA's orbital period is recorded as {'unit': 'Q573', 'amount': '+1447.367486550608'}[24].
  • (6491) 1991 OA's rotation period is recorded as {'unit': 'Q25235', 'amount': '+2.69'}[25].
  • (6491) 1991 OA's longitude of ascending node is recorded as {'unit': 'Q28390', 'amount': '+301.89486'}[26].
  • (6491) 1991 OA's longitude of ascending node is recorded as {'unit': 'Q28390', 'amount': '+299.9831762676371'}[27].

Body

Designation and Status

Recorded instance of include potentially hazardous asteroid[4], near-Earth object[5], and near-Earth asteroid[6].

Why It Matters

(6491) 1991 OA draws 5 Wikipedia views per month (potentially_hazardous_asteroid category, ranking #33 of 147).[2] (6491) 1991 OA has Wikipedia articles in 8 language editions, a strong signal of global cultural recognition.[28]

References

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

Direct Wikidata claims

  1. [4] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  2. [5] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  3. [6] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  4. [3] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  5. [7] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  6. [8] ↑ . wikidata.org.
  7. [9] ↑ . wikidata.org.
  8. [10] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  9. [11] ↑ . wikidata.org.
  10. [12] ↑ . Minor Planet Center database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  11. [13] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  12. [14] ↑ . wikidata.org.
  13. [15] ↑ . JPL Small-Body Database. Retrieved . wikidata.org.
  14. [16] ↑ . wikidata.org.
  15. [17] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.
  16. [18] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  17. [19] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.
  18. [20] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  19. [21] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.
  20. [22] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  21. [23] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.
  22. [24] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. 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] ↑ . Wikimedia Foundation. dumps.wikimedia.org.
  2. [28] ↑ . Wikidata sitelinks. 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). (6491) 1991 OA. Retrieved May 3, 2026, from https://4ort.xyz/entity/6491-1991-oa
MLA “(6491) 1991 OA.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/6491-1991-oa.
BibTeX @misc{4ortxyz_6491-1991-oa_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{(6491) 1991 OA}}, year = {2026}, url = {https://4ort.xyz/entity/6491-1991-oa}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): (6491) 1991 OA — https://4ort.xyz/entity/6491-1991-oa (retrieved 2026-05-03)

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