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(66644) 1999 RL231

asteroid
Place asteroid Q15182388
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(66644) 1999 RL231

Summary

(66644) 1999 RL231 is an asteroid[1].

Key Facts

  • (66644) 1999 RL231 is credited with the discovery of Lowell Observatory Near-Earth-Object Search[2].
  • (66644) 1999 RL231's instance of is recorded as asteroid[3].
  • (66644) 1999 RL231's site of astronomical discovery is recorded as Anderson Mesa Station[4].
  • (66644) 1999 RL231 followed (66643) 1999 RW229[5].
  • (66644) 1999 RL231 was followed by (66645) 1999 RN232[6].
  • (66644) 1999 RL231's minor planet group is recorded as asteroid belt[7].
  • (66644) 1999 RL231's parent astronomical body is recorded as Sun[8].
  • (66644) 1999 RL231's provisional designation is recorded as 2000 YM118[9].
  • (66644) 1999 RL231's provisional designation is recorded as 1999 RL231[10].
  • (66644) 1999 RL231's time of discovery or invention is recorded as September 9, 1999[11].
  • (66644) 1999 RL231's orbital eccentricity is recorded as {'unit': '1', 'amount': '+0.1975470850979225'}[12].
  • (66644) 1999 RL231's absolute magnitude is recorded as {'unit': '1', 'amount': '+15.09'}[13].
  • (66644) 1999 RL231's orbital inclination is recorded as {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+8.95486936564415'}[14].
  • (66644) 1999 RL231's orbital period is recorded as {'unit': 'http://www.wikidata.org/entity/Q573', 'amount': '+1544.198913373013'}[15].
  • (66644) 1999 RL231's longitude of ascending node is recorded as {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+98.20897424148501'}[16].
  • (66644) 1999 RL231's semi-major axis of an orbit is recorded as {'unit': 'http://www.wikidata.org/entity/Q1811', 'amount': '+2.614587679912013'}[17].
  • (66644) 1999 RL231's apoapsis is recorded as {'unit': 'http://www.wikidata.org/entity/Q1811', 'amount': '+3.131091854811571'}[18].
  • (66644) 1999 RL231's periapsis is recorded as {'unit': 'http://www.wikidata.org/entity/Q1811', 'amount': '+2.098083505012455'}[19].
  • (66644) 1999 RL231's argument of periapsis is recorded as {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+283.6942793281079'}[20].
  • (66644) 1999 RL231's mean anomaly is recorded as {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+310.797542797603'}[21].
  • (66644) 1999 RL231's diameter is recorded as {'unit': 'http://www.wikidata.org/entity/Q828224', 'amount': '+6.159'}[22].
  • (66644) 1999 RL231's albedo is recorded as {'unit': '1', 'amount': '+0.061'}[23].
  • (66644) 1999 RL231's epoch is recorded as October 17, 2024[24].
  • (66644) 1999 RL231's time of periapsis is recorded as {'unit': 'http://www.wikidata.org/entity/Q14267', 'amount': '+2460811.5510581867'}[25].

Body

Designation and Status

(66644) 1999 RL231'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.
  22. [23] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  23. [24] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  24. [25] ↑ . 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). (66644) 1999 RL231. Retrieved May 3, 2026, from https://4ort.xyz/entity/-66644-1999-rl231
MLA “(66644) 1999 RL231.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/-66644-1999-rl231.
BibTeX @misc{4ortxyz_-66644-1999-rl231_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{(66644) 1999 RL231}}, year = {2026}, url = {https://4ort.xyz/entity/-66644-1999-rl231}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): (66644) 1999 RL231 — https://4ort.xyz/entity/-66644-1999-rl231 (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. 27d ago · LiMrBot bot · 2026-05-13 view diff on Wikidata ↗
    Absolute magnitude → {'unit': '1', 'amount': '+15.09'}
    Argument of periapsis → {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount':
    Time of discovery or invention → +1999-09-09T00:00:00Z
    Followed by → (66645) 1999 RN232
    + 23 other properties edited (see Wikidata diff for full list)
    "/* wbremoveclaims-remove:1| */ [[Property:P1096]]: 0.1975470850979225±0.0000000019786"
Live feed via Wikidata EventStreams. New edits appear within minutes of being made on Wikidata.