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(5645) 1990 SP

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(5645) 1990 SP

Summary

(5645) 1990 SP is an asteroid[1]. (5645) 1990 SP ranks in the top 2% of asteroid entities by monthly Wikipedia readership (3 views/month).[2]

Key Facts

  • (5645) 1990 SP is credited with the discovery of Robert H. McNaught[3].
  • (5645) 1990 SP's instance of is recorded as asteroid[4].
  • (5645) 1990 SP's instance of is recorded as near-Earth object[5].
  • (5645) 1990 SP's instance of is recorded as near-Earth asteroid[6].
  • (5645) 1990 SP's site of astronomical discovery is recorded as Siding Spring Observatory[7].
  • (5645) 1990 SP's follows is recorded as 5644 Maureenbell[8].
  • (5645) 1990 SP's followed by is recorded as (5646) 1990 TR[9].
  • (5645) 1990 SP's minor planet group is recorded as Apollo asteroid[10].
  • (5645) 1990 SP's parent astronomical body is recorded as Sun[11].
  • (5645) 1990 SP's provisional designation is recorded as 1990 SP[12].
  • (5645) 1990 SP's time of discovery or invention is recorded as +1990-09-20T00:00:00Z[13].
  • (5645) 1990 SP's Freebase ID is recorded as /m/0bwgp2j[14].
  • (5645) 1990 SP's JPL Small-Body Database SPK-ID is recorded as 20005645[15].
  • (5645) 1990 SP's orbital eccentricity is recorded as {'amount': '+0.3873'}[16].
  • (5645) 1990 SP's orbital eccentricity is recorded as {'amount': '+0.3875379'}[17].
  • (5645) 1990 SP's orbital eccentricity is recorded as {'amount': '+0.3873146660261951'}[18].
  • (5645) 1990 SP's absolute magnitude is recorded as {'amount': '+17.1'}[19].
  • (5645) 1990 SP's absolute magnitude is recorded as {'amount': '+17.23'}[20].
  • (5645) 1990 SP's orbital inclination is recorded as {'unit': 'Q28390', 'amount': '+13.50654'}[21].
  • (5645) 1990 SP's orbital inclination is recorded as {'unit': 'Q28390', 'amount': '+13.50516942117227'}[22].
  • (5645) 1990 SP's orbital period is recorded as {'unit': 'Q577', 'amount': '+1.58'}[23].
  • (5645) 1990 SP's orbital period is recorded as {'unit': 'Q573', 'amount': '+575.8204887112676'}[24].
  • (5645) 1990 SP's rotation period is recorded as {'unit': 'Q25235', 'amount': '+30.39'}[25].
  • (5645) 1990 SP's longitude of ascending node is recorded as {'unit': 'Q28390', 'amount': '+45.75896'}[26].
  • (5645) 1990 SP's longitude of ascending node is recorded as {'unit': 'Q28390', 'amount': '+45.7023612718174'}[27].

Body

Designation and Status

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

Why It Matters

(5645) 1990 SP ranks in the top 2% of asteroid entities by monthly Wikipedia readership (3 views/month).[2] (5645) 1990 SP has Wikipedia articles in 9 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). (5645) 1990 SP. Retrieved May 3, 2026, from https://4ort.xyz/entity/5645-1990-sp
MLA “(5645) 1990 SP.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/5645-1990-sp.
BibTeX @misc{4ortxyz_5645-1990-sp_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{(5645) 1990 SP}}, year = {2026}, url = {https://4ort.xyz/entity/5645-1990-sp}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): (5645) 1990 SP — https://4ort.xyz/entity/5645-1990-sp (retrieved 2026-05-03)

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