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(75551) 1999 YL4

asteroid
Place asteroid Q15189224
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(75551) 1999 YL4

Summary

(75551) 1999 YL4 is an asteroid[1].

Key Facts

  • (75551) 1999 YL4 is credited with the discovery of Gary Hug[2].
  • (75551) 1999 YL4 is credited with the discovery of Graham E. Bell[3].
  • (75551) 1999 YL4's instance of is recorded as asteroid[4].
  • (75551) 1999 YL4's site of astronomical discovery is recorded as Farpoint Observatory[5].
  • (75551) 1999 YL4 followed (75550) 1999 YT1[6].
  • (75551) 1999 YL4 was followed by (75552) 1999 YO5[7].
  • (75551) 1999 YL4's minor planet group is recorded as asteroid belt[8].
  • (75551) 1999 YL4's parent astronomical body is recorded as Sun[9].
  • (75551) 1999 YL4's provisional designation is recorded as 1999 YL4[10].
  • (75551) 1999 YL4's provisional designation is recorded as 1998 SP105[11].
  • (75551) 1999 YL4's time of discovery or invention is recorded as December 27, 1999[12].
  • (75551) 1999 YL4's orbital eccentricity is recorded as {'unit': '1', 'amount': '+0.08130062636772915'}[13].
  • (75551) 1999 YL4's absolute magnitude is recorded as {'unit': '1', 'amount': '+15.15'}[14].
  • (75551) 1999 YL4's orbital inclination is recorded as {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+3.001388957465248'}[15].
  • (75551) 1999 YL4's orbital period is recorded as {'unit': 'http://www.wikidata.org/entity/Q573', 'amount': '+1837.737057612387'}[16].
  • (75551) 1999 YL4's longitude of ascending node is recorded as {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+95.89400297058738'}[17].
  • (75551) 1999 YL4's semi-major axis of an orbit is recorded as {'unit': 'http://www.wikidata.org/entity/Q1811', 'amount': '+2.936229272461378'}[18].
  • (75551) 1999 YL4's apoapsis is recorded as {'unit': 'http://www.wikidata.org/entity/Q1811', 'amount': '+3.174946551471749'}[19].
  • (75551) 1999 YL4's periapsis is recorded as {'unit': 'http://www.wikidata.org/entity/Q1811', 'amount': '+2.697511993451006'}[20].
  • (75551) 1999 YL4's argument of periapsis is recorded as {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+238.112836426343'}[21].
  • (75551) 1999 YL4's mean anomaly is recorded as {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+96.39081075549457'}[22].
  • (75551) 1999 YL4's epoch is recorded as October 17, 2024[23].
  • (75551) 1999 YL4's time of periapsis is recorded as {'unit': 'http://www.wikidata.org/entity/Q14267', 'amount': '+2460108.441764059'}[24].

Body

Designation and Status

(75551) 1999 YL4's instance of is recorded as asteroid[4].

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. [2] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  3. [3] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  4. [5] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  5. [6] ↑ . wikidata.org.
  6. [7] ↑ . wikidata.org.
  7. [8] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  8. [9] ↑ . 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.

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). (75551) 1999 YL4. Retrieved May 3, 2026, from https://4ort.xyz/entity/-75551-1999-yl4
MLA “(75551) 1999 YL4.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/-75551-1999-yl4.
BibTeX @misc{4ortxyz_-75551-1999-yl4_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{(75551) 1999 YL4}}, year = {2026}, url = {https://4ort.xyz/entity/-75551-1999-yl4}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): (75551) 1999 YL4 — https://4ort.xyz/entity/-75551-1999-yl4 (retrieved 2026-05-03)

Canonical URL: https://4ort.xyz/entity/-75551-1999-yl4 · Last refreshed:

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. 6d ago · LiMrBot bot · 2026-06-03 view diff on Wikidata ↗
    Longitude of ascending node → {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount':
    Time of periapsis → {'unit': 'http://www.wikidata.org/entity/Q14267', 'amount':
    Parent astronomical body → Sun
    Epoch → October 17, 2024
    + 21 other properties edited (see Wikidata diff for full list)
    "/* wbremoveclaims-remove:1| */ [[Property:P1457]]: 15.15"
Live feed via Wikidata EventStreams. New edits appear within minutes of being made on Wikidata.