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(55740) 1989 YL2

minor planet
Place asteroid Q4543900
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(55740) 1989 YL2

Summary

(55740) 1989 YL2 is an asteroid[1]. (55740) 1989 YL2 is known by 3 alternative names across languages and contexts.[2]

Key Facts

  • (55740) 1989 YL2 is credited with the discovery of Robert H. McNaught[3].
  • (55740) 1989 YL2's instance of is recorded as asteroid[4].
  • (55740) 1989 YL2's site of astronomical discovery is recorded as Siding Spring Observatory[5].
  • (55740) 1989 YL2's follows is recorded as Q8332598[6].
  • (55740) 1989 YL2's followed by is recorded as (55741) 1990 QZ3[7].
  • (55740) 1989 YL2's minor planet group is recorded as asteroid belt[8].
  • (55740) 1989 YL2's minor planet group is recorded as outer asteroid belt[9].
  • (55740) 1989 YL2's parent astronomical body is recorded as Sun[10].
  • (55740) 1989 YL2's provisional designation is recorded as 1989 YL2[11].
  • (55740) 1989 YL2's provisional designation is recorded as 1990 BY2[12].
  • (55740) 1989 YL2's provisional designation is recorded as 2001 UQ135[13].
  • (55740) 1989 YL2's time of discovery or invention is recorded as +1989-12-30T00:00:00Z[14].
  • (55740) 1989 YL2's Freebase ID is recorded as /m/0h7ml06[15].
  • (55740) 1989 YL2's JPL Small-Body Database SPK-ID is recorded as 20055740[16].
  • (55740) 1989 YL2's orbital eccentricity is recorded as {'amount': '+0.1725995579349663'}[17].
  • (55740) 1989 YL2's absolute magnitude is recorded as {'amount': '+13.94'}[18].
  • (55740) 1989 YL2's orbital inclination is recorded as {'unit': 'Q28390', 'amount': '+6.1436378484021'}[19].
  • (55740) 1989 YL2's orbital period is recorded as {'unit': 'Q573', 'amount': '+2321.17644546669'}[20].
  • (55740) 1989 YL2's longitude of ascending node is recorded as {'unit': 'Q28390', 'amount': '+127.4918873874617'}[21].
  • (55740) 1989 YL2's semi-major axis of an orbit is recorded as {'unit': 'Q1811', 'amount': '+3.430887560744572'}[22].
  • (55740) 1989 YL2's apoapsis is recorded as {'unit': 'Q1811', 'amount': '+4.023057237053661'}[23].
  • (55740) 1989 YL2's periapsis is recorded as {'unit': 'Q1811', 'amount': '+2.838717884435484'}[24].
  • (55740) 1989 YL2's argument of periapsis is recorded as {'unit': 'Q28390', 'amount': '+316.0411910822862'}[25].
  • (55740) 1989 YL2's mean anomaly is recorded as {'unit': 'Q28390', 'amount': '+252.591271336183'}[26].
  • (55740) 1989 YL2's diameter is recorded as {'unit': 'Q828224', 'amount': '+8.555'}[27].

Body

Designation and Status

(55740) 1989 YL2's instance of is recorded as asteroid[4].

Why It Matters

(55740) 1989 YL2 is known by 3 alternative names across languages and contexts.[2]

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. [3] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  3. [5] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  4. [6] ↑ . wikidata.org.
  5. [7] ↑ . wikidata.org.
  6. [8] ↑ . wikidata.org.
  7. [9] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  8. [10] ↑ . wikidata.org.
  9. [11] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  10. [12] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  11. [13] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  12. [14] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  13. [15] ↑ . wikidata.org.
  14. [16] ↑ . JPL Small-Body Database. Retrieved . wikidata.org.
  15. [17] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  16. [18] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  17. [19] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  18. [20] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  19. [21] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  20. [22] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  21. [23] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  22. [24] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  23. [25] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  24. [26] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  25. [27] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.

Class ancestry

  1. [1] ↑ . Wikidata. wikidata.org.

Aggregate / graph-position facts

  1. [2] ↑ . Wikidata aliases. 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). (55740) 1989 YL2. Retrieved May 3, 2026, from https://4ort.xyz/entity/55740-1989-yl2
MLA “(55740) 1989 YL2.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/55740-1989-yl2.
BibTeX @misc{4ortxyz_55740-1989-yl2_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{(55740) 1989 YL2}}, year = {2026}, url = {https://4ort.xyz/entity/55740-1989-yl2}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): (55740) 1989 YL2 — https://4ort.xyz/entity/55740-1989-yl2 (retrieved 2026-05-03)

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