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(21072) 1991 PU8

minor planet
Place asteroid Q4542196
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(21072) 1991 PU8

Summary

(21072) 1991 PU8 is an asteroid[1]. (21072) 1991 PU8 ranks in the top 2% of asteroid entities by monthly Wikipedia readership (1 views/month).[2]

Key Facts

  • (21072) 1991 PU8 is credited with the discovery of Henry E. Holt[3].
  • (21072) 1991 PU8's instance of is recorded as asteroid[4].
  • (21072) 1991 PU8's site of astronomical discovery is recorded as Palomar Observatory[5].
  • (21072) 1991 PU8 followed (21071) 1991 PE7[6].
  • (21072) 1991 PU8 was followed by 21073 Darksky[7].
  • (21072) 1991 PU8's minor planet group is recorded as asteroid belt[8].
  • (21072) 1991 PU8's parent astronomical body is recorded as Sun[9].
  • (21072) 1991 PU8's provisional designation is recorded as 1991 PU8[10].
  • (21072) 1991 PU8's provisional designation is recorded as 2000 WB54[11].
  • (21072) 1991 PU8's time of discovery or invention is recorded as August 5, 1991[12].
  • (21072) 1991 PU8's orbital eccentricity is recorded as {'amount': '+0.16'}[13].
  • (21072) 1991 PU8's orbital eccentricity is recorded as {'amount': '+0.1612173'}[14].
  • (21072) 1991 PU8's orbital eccentricity is recorded as {'amount': '+0.1603377143567946'}[15].
  • (21072) 1991 PU8's absolute magnitude is recorded as {'amount': '+14.5'}[16].
  • (21072) 1991 PU8's absolute magnitude is recorded as {'amount': '+14.66'}[17].
  • (21072) 1991 PU8's orbital inclination is recorded as {'unit': 'Q28390', 'amount': '+6.77332'}[18].
  • (21072) 1991 PU8's orbital inclination is recorded as {'unit': 'Q28390', 'amount': '+6.77194179476939'}[19].
  • (21072) 1991 PU8's orbital period is recorded as {'unit': 'Q577', 'amount': '+4.13'}[20].
  • (21072) 1991 PU8's orbital period is recorded as {'unit': 'Q573', 'amount': '+1508.864796595609'}[21].
  • (21072) 1991 PU8's rotation period is recorded as {'unit': 'Q25235', 'amount': '+64.5422'}[22].
  • (21072) 1991 PU8's longitude of ascending node is recorded as {'unit': 'Q28390', 'amount': '+288.76657'}[23].
  • (21072) 1991 PU8's longitude of ascending node is recorded as {'unit': 'Q28390', 'amount': '+288.7400203921991'}[24].
  • (21072) 1991 PU8's semi-major axis of an orbit is recorded as {'unit': 'Q1811', 'amount': '+2.5739328'}[25].
  • (21072) 1991 PU8's semi-major axis of an orbit is recorded as {'unit': 'Q1811', 'amount': '+2.574549617854913'}[26].
  • (21072) 1991 PU8's apoapsis is recorded as {'unit': 'Q1811', 'amount': '+2.989'}[27].

Body

Designation and Status

(21072) 1991 PU8's instance of is recorded as asteroid[4].

Why It Matters

(21072) 1991 PU8 ranks in the top 2% of asteroid entities by monthly Wikipedia readership (1 views/month).[2] (21072) 1991 PU8 has Wikipedia articles in 5 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. [3] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  3. [5] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  4. [6] ↑ . wikidata.org.
  5. [7] ↑ . wikidata.org.
  6. [8] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  7. [9] ↑ . wikidata.org.
  8. [10] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  9. [11] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  10. [12] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  11. [13] ↑ . wikidata.org.
  12. [14] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.
  13. [15] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  14. [16] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.
  15. [17] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: 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] ↑ . 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] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.
  24. [26] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  25. [27] ↑ . minorplanetcenter.net. minorplanetcenter.net. 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). (21072) 1991 PU8. Retrieved May 3, 2026, from https://4ort.xyz/entity/21072-1991-pu8
MLA “(21072) 1991 PU8.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/21072-1991-pu8.
BibTeX @misc{4ortxyz_21072-1991-pu8_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{(21072) 1991 PU8}}, year = {2026}, url = {https://4ort.xyz/entity/21072-1991-pu8}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): (21072) 1991 PU8 — https://4ort.xyz/entity/21072-1991-pu8 (retrieved 2026-05-03)

Canonical URL: https://4ort.xyz/entity/21072-1991-pu8 · 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. 14d ago · KaleemBot bot · 2026-05-20 view diff on Wikidata ↗
    Apoapsis → {'unit': 'Q1811', 'amount': '+2.989'}, {'unit': 'Q1811', 'amount': '+2.987347019079929'}
    Time of periapsis → {'unit': 'Q14267', 'amount': '+2460360.7434511175'}
    Site of astronomical discovery → Palomar Observatory
    Mean anomaly → {'unit': 'Q28390', 'amount': '+299.36792'}, {'unit': 'Q28390', 'amount': '+152.639493026323'}
    + 21 other properties edited (see Wikidata diff for full list)
    "/* wbeditentity-update:0| */ Added [[wikipedia:ur:(21072) 1991 پی یو 8]]"
Live feed via Wikidata EventStreams. New edits appear within minutes of being made on Wikidata.