1991 BA

asteroid
Place asteroid Q3597924
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1991 BA

Summary

1991 BA is an asteroid[1]. It ranks in the top 2% of asteroid entities by monthly Wikipedia readership (2 views/month).[2]

Key Facts

  • 1991 BA is credited with the discovery of Spacewatch[3].
  • 1991 BA's instance of is recorded as asteroid[4].
  • 1991 BA's instance of is recorded as near-Earth object[5].
  • 1991 BA's instance of is recorded as near-Earth asteroid[6].
  • 1991 BA's minor planet group is recorded as Apollo asteroid[7].
  • 1991 BA's parent astronomical body is recorded as Sun[8].
  • 1991 BA's time of discovery or invention is recorded as +1991-01-18T00:00:00Z[9].
  • 1991 BA's Freebase ID is recorded as /m/0brfcx[10].
  • 1991 BA's JPL Small-Body Database SPK-ID is recorded as 3092104[11].
  • 1991 BA's orbital eccentricity is recorded as {'amount': '+0.6730'}[12].
  • 1991 BA's orbital eccentricity is recorded as {'amount': '+0.6732249052774221'}[13].
  • 1991 BA's absolute magnitude is recorded as {'amount': '+28.6'}[14].
  • 1991 BA's orbital inclination is recorded as {'unit': 'Q28390', 'amount': '+1.937990056842139'}[15].
  • 1991 BA's orbital period is recorded as {'unit': 'Q573', 'amount': '+1182.85385909718'}[16].
  • 1991 BA's longitude of ascending node is recorded as {'unit': 'Q28390', 'amount': '+118.8801793516516'}[17].
  • 1991 BA's semi-major axis of an orbit is recorded as {'unit': 'Q1811', 'amount': '+2.188879108287361'}[18].
  • 1991 BA's apoapsis is recorded as {'unit': 'Q1811', 'amount': '+3.662487038627849'}[19].
  • 1991 BA's periapsis is recorded as {'unit': 'Q1811', 'amount': '+0.7152711779468744'}[20].
  • 1991 BA's argument of periapsis is recorded as {'unit': 'Q28390', 'amount': '+70.68790435853117'}[21].
  • 1991 BA's mean anomaly is recorded as {'unit': 'Q28390', 'amount': '+346.8356776079431'}[22].
  • 1991 BA's Minor Planet Center body ID is recorded as 1991 BA[23].
  • 1991 BA's epoch is recorded as January 18, 1991[24].
  • 1991 BA's time of periapsis is recorded as {'unit': 'Q14267', 'amount': '+2448317.754082066'}[25].

Body

Designation and Status

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

Why It Matters

1991 BA ranks in the top 2% of asteroid entities by monthly Wikipedia readership (2 views/month).[2] It has Wikipedia articles in 9 language editions, a strong signal of global cultural recognition.[26]

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] . 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] . Freebase Data Dumps. wikidata.org.
  9. [11] . JPL Small-Body Database. wikidata.org.
  10. [12] . wikidata.org.
  11. [13] . JPL Small-Body 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] . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  14. [16] . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  15. [17] . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  16. [18] . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  17. [19] . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  18. [20] . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  19. [21] . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  20. [22] . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  21. [23] . 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.

Class ancestry

  1. [1] . Wikidata. wikidata.org.

Aggregate / graph-position facts

  1. [2] . Wikimedia Foundation. dumps.wikimedia.org.
  2. [26] . 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). 1991 BA. Retrieved May 3, 2026, from https://4ort.xyz/entity/1991-ba
MLA “1991 BA.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/1991-ba.
BibTeX @misc{4ortxyz_1991-ba_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{1991 BA}}, year = {2026}, url = {https://4ort.xyz/entity/1991-ba}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): 1991 BA — https://4ort.xyz/entity/1991-ba (retrieved 2026-05-03)

Canonical URL: https://4ort.xyz/entity/1991-ba · Last refreshed:

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. 22d ago · Shuaib-bot bot · 2026-05-04 view diff on Wikidata ↗
    Argument of periapsis {'unit': 'Q28390', 'amount': '+70.68790435853117'}
    Periapsis {'unit': 'Q1811', 'amount': '+0.7152711779468744'}
    Instance of asteroid, near-Earth object, near-Earth asteroid
    Epoch January 18, 1991
    + 14 other properties edited (see Wikidata diff for full list)
    "/* wbeditentity-update:0| */"
Live feed via Wikidata EventStreams. New edits appear within minutes of being made on Wikidata.