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(70971) 1999 XL20

asteroid
Place asteroid Q15183251
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Summary

(70971) 1999 XL20 is an asteroid[1].

Key Facts

  • Discoverer or inventor: Lincoln Near-Earth Asteroid Research[2]
  • Site of astronomical discovery: Experimental Test Site[3]
  • Follows: (70970) 1999 XH20[4]
  • Followed by: (70972) 1999 XM20[5]
  • Minor planet group: asteroid belt[6]
  • Parent astronomical body: Sun[7]
  • Provisional designation: 2001 FF78[8], 1999 XL20[9]
  • Time of discovery or invention: December 5, 1999[10]
  • Orbital eccentricity: 0.1379976212021136[11]
  • Absolute magnitude: 15.13[12]
  • Orbital inclination: 3.323672809806292 degree[13]
  • Orbital period: 1353.817547858129 day[14]
  • Longitude of ascending node: 93.37964507575522 degree[15]
  • Semi-major axis of an orbit: 2.395012630594417 astronomical unit[16]
  • Apoapsis: 2.725518676365464 astronomical unit[17]
  • Periapsis: 2.064506584823372 astronomical unit[18]
  • Argument of periapsis: 25.46979583492928 degree[19]
  • Mean anomaly: 304.4250145881587 degree[20]
  • Epoch: November 21, 2025[21]
  • Time of periapsis: 2461209.4955290905 Julian day[22]

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] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  12. [13] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  13. [14] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  14. [15] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  15. [16] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  16. [17] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  17. [18] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  18. [19] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  19. [20] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  20. [21] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  21. [22] ↑ . 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). (70971) 1999 XL20. Retrieved October 29, 2026, from https://4ort.xyz/entity/-70971-1999-xl20
MLA “(70971) 1999 XL20.” 4ort.xyz Knowledge Graph, 4ort.xyz, 29 Oct. 2026, https://4ort.xyz/entity/-70971-1999-xl20.
BibTeX @misc{4ortxyz_-70971-1999-xl20_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{(70971) 1999 XL20}}, year = {2026}, url = {https://4ort.xyz/entity/-70971-1999-xl20}, note = {Accessed: 2026-10-29}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): (70971) 1999 XL20 — https://4ort.xyz/entity/-70971-1999-xl20 (retrieved 2026-10-29)

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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. 24w ago · LiMrBot bot · 2026-05-14 view diff on Wikidata ↗
    Time of periapsis → {'unit': 'Q14267', 'amount': '+2461209.4955290905'}
    Epoch → November 21, 2025
    Orbital inclination → {'unit': 'Q28390', 'amount': '+3.323672809806292'}
    Periapsis → {'unit': 'Q1811', 'amount': '+2.064506584823372'}
    + 20 other properties edited (see Wikidata diff for full list)
    "/* wbremoveclaims-remove:1| */ Absolute magnitude: 15.16"
Live feed via Wikidata EventStreams. New edits appear within minutes of being made on Wikidata.