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(66945) 1999 XA1

asteroid
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(66945) 1999 XA1

Summary

(66945) 1999 XA1 is an asteroid[1].

Key Facts

  • (66945) 1999 XA1 is credited with the discovery of Takao Kobayashi[2].
  • (66945) 1999 XA1's instance of is recorded as asteroid[3].
  • (66945) 1999 XA1's site of astronomical discovery is recorded as Ōizumi Observatory[4].
  • (66945) 1999 XA1 followed (66944) 1999 WQ20[5].
  • (66945) 1999 XA1 was followed by (66946) 1999 XT1[6].
  • (66945) 1999 XA1's minor planet group is recorded as asteroid belt[7].
  • (66945) 1999 XA1's parent astronomical body is recorded as Sun[8].
  • (66945) 1999 XA1's provisional designation is recorded as 1999 XA1[9].
  • (66945) 1999 XA1's time of discovery or invention is recorded as December 2, 1999[10].
  • (66945) 1999 XA1's orbital eccentricity is recorded as {'unit': '1', 'amount': '+0.04810494039586124'}[11].
  • (66945) 1999 XA1's absolute magnitude is recorded as {'unit': '1', 'amount': '+13.92'}[12].
  • (66945) 1999 XA1's orbital inclination is recorded as {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+8.70357521927652'}[13].
  • (66945) 1999 XA1's orbital period is recorded as {'unit': 'http://www.wikidata.org/entity/Q573', 'amount': '+1874.822189827661'}[14].
  • (66945) 1999 XA1's longitude of ascending node is recorded as {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+287.1822941331954'}[15].
  • (66945) 1999 XA1's semi-major axis of an orbit is recorded as {'unit': 'http://www.wikidata.org/entity/Q1811', 'amount': '+2.975599237790363'}[16].
  • (66945) 1999 XA1's apoapsis is recorded as {'unit': 'http://www.wikidata.org/entity/Q1811', 'amount': '+3.118740261766239'}[17].
  • (66945) 1999 XA1's periapsis is recorded as {'unit': 'http://www.wikidata.org/entity/Q1811', 'amount': '+2.832458213814488'}[18].
  • (66945) 1999 XA1's argument of periapsis is recorded as {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+202.1712551907454'}[19].
  • (66945) 1999 XA1's mean anomaly is recorded as {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+262.7442753929444'}[20].
  • (66945) 1999 XA1's epoch is recorded as October 17, 2024[21].
  • (66945) 1999 XA1's time of periapsis is recorded as {'unit': 'http://www.wikidata.org/entity/Q14267', 'amount': '+2461106.9921960584'}[22].

Body

Designation and Status

(66945) 1999 XA1's instance of is recorded as asteroid[3].

References

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

Direct Wikidata claims

  1. [3] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  2. [2] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  3. [4] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  4. [5] ↑ . wikidata.org.
  5. [6] ↑ . wikidata.org.
  6. [7] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  7. [8] ↑ . 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). (66945) 1999 XA1. Retrieved May 3, 2026, from https://4ort.xyz/entity/-66945-1999-xa1
MLA “(66945) 1999 XA1.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/-66945-1999-xa1.
BibTeX @misc{4ortxyz_-66945-1999-xa1_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{(66945) 1999 XA1}}, year = {2026}, url = {https://4ort.xyz/entity/-66945-1999-xa1}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): (66945) 1999 XA1 — https://4ort.xyz/entity/-66945-1999-xa1 (retrieved 2026-05-03)

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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. 26d ago · LiMrBot bot · 2026-05-12 view diff on Wikidata ↗
    Apoapsis → {'unit': 'http://www.wikidata.org/entity/Q1811', 'amount': '
    Periapsis → {'unit': 'http://www.wikidata.org/entity/Q1811', 'amount': '
    Site of astronomical discovery → Ōizumi Observatory
    Discoverer or inventor → Takao Kobayashi
    + 20 other properties edited (see Wikidata diff for full list)
    "/* wbremoveclaims-remove:1| */ [[Property:P1457]]: 13.92"
Live feed via Wikidata EventStreams. New edits appear within minutes of being made on Wikidata.