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(21997) 1999 XP36

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Summary

(21997) 1999 XP36 is an asteroid[1].

Key Facts

  • Discoverer or inventor: Charles W. Juels[2]
  • Site of astronomical discovery: Fountain Hills Observatory[3]
  • Follows: (21996) 1999 XP31[4]
  • Followed by: (21998) 1999 XH37[5]
  • Minor planet group: asteroid belt[6]
  • Parent astronomical body: Sun[7]
  • Provisional designation: 1978 TP[8], 1990 JD[9], 1999 XP36[10]
  • Time of discovery or invention: December 7, 1999[11]
  • Orbital eccentricity: 0.18[12], 0.1793983[13], 0.1800534689160816[14]
  • Absolute magnitude: 13.4[15], 13.54[16]
  • Orbital inclination: 10.83061 degree[17], 10.80888429710984 degree[18]
  • Orbital period: 4.15 years[19], 1513.783758981339 day[20]
  • Longitude of ascending node: 20.91686 degree[21], 20.75905235734995 degree[22]
  • Semi-major axis of an orbit: 2.5814865 astronomical unit[23], 2.580142008366846 astronomical unit[24]

References

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

Direct Wikidata claims

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

Class ancestry

  1. [1] ↑ . Wikidata. 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). (21997) 1999 XP36. Retrieved October 28, 2026, from https://4ort.xyz/entity/-21997-1999-xp36
MLA “(21997) 1999 XP36.” 4ort.xyz Knowledge Graph, 4ort.xyz, 28 Oct. 2026, https://4ort.xyz/entity/-21997-1999-xp36.
BibTeX @misc{4ortxyz_-21997-1999-xp36_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{(21997) 1999 XP36}}, year = {2026}, url = {https://4ort.xyz/entity/-21997-1999-xp36}, note = {Accessed: 2026-10-28}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): (21997) 1999 XP36 — https://4ort.xyz/entity/-21997-1999-xp36 (retrieved 2026-10-28)

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