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(42490) 1991 SU

minor planet
Place asteroid Q4543379
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(42490) 1991 SU

Summary

(42490) 1991 SU is an asteroid[1].

Key Facts

  • (42490) 1991 SU is credited with the discovery of Robert H. McNaught[2].
  • (42490) 1991 SU's instance of is recorded as asteroid[3].
  • (42490) 1991 SU's site of astronomical discovery is recorded as Siding Spring Observatory[4].
  • (42490) 1991 SU followed (42489) 1991 RL18[5].
  • (42490) 1991 SU was followed by (42491) 1991 TF[6].
  • (42490) 1991 SU's minor planet group is recorded as asteroid belt[7].
  • (42490) 1991 SU's parent astronomical body is recorded as Sun[8].
  • (42490) 1991 SU's provisional designation is recorded as 1984 YU2[9].
  • (42490) 1991 SU's provisional designation is recorded as 1991 SU[10].
  • (42490) 1991 SU's provisional designation is recorded as 2000 CD3[11].
  • (42490) 1991 SU's time of discovery or invention is recorded as September 30, 1991[12].
  • (42490) 1991 SU's orbital eccentricity is recorded as {'unit': '1', 'amount': '+0.1381942477642584'}[13].
  • (42490) 1991 SU's absolute magnitude is recorded as {'unit': '1', 'amount': '+14.38'}[14].
  • (42490) 1991 SU's orbital inclination is recorded as {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+8.386142914168385'}[15].
  • (42490) 1991 SU's orbital period is recorded as {'unit': 'http://www.wikidata.org/entity/Q573', 'amount': '+1369.827103512499'}[16].
  • (42490) 1991 SU's rotation period is recorded as {'unit': 'http://www.wikidata.org/entity/Q25235', 'amount': '+7.953'}[17].
  • (42490) 1991 SU's longitude of ascending node is recorded as {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+109.7189290372092'}[18].
  • (42490) 1991 SU's semi-major axis of an orbit is recorded as {'unit': 'http://www.wikidata.org/entity/Q1811', 'amount': '+2.413857076097008'}[19].
  • (42490) 1991 SU's apoapsis is recorded as {'unit': 'http://www.wikidata.org/entity/Q1811', 'amount': '+2.747438238938666'}[20].
  • (42490) 1991 SU's periapsis is recorded as {'unit': 'http://www.wikidata.org/entity/Q1811', 'amount': '+2.08027591325535'}[21].
  • (42490) 1991 SU's argument of periapsis is recorded as {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+285.5105068410309'}[22].
  • (42490) 1991 SU's mean anomaly is recorded as {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+3.837140687248735'}[23].
  • (42490) 1991 SU's diameter is recorded as {'unit': 'http://www.wikidata.org/entity/Q828224', 'amount': '+3.897'}[24].
  • (42490) 1991 SU's albedo is recorded as {'unit': '1', 'amount': '+0.351'}[25].
  • (42490) 1991 SU's epoch is recorded as November 21, 2025[26].

Body

Designation and Status

(42490) 1991 SU'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.
  25. [26] ↑ . 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). (42490) 1991 SU. Retrieved May 3, 2026, from https://4ort.xyz/entity/-42490-1991-su
MLA “(42490) 1991 SU.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/-42490-1991-su.
BibTeX @misc{4ortxyz_-42490-1991-su_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{(42490) 1991 SU}}, year = {2026}, url = {https://4ort.xyz/entity/-42490-1991-su}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): (42490) 1991 SU — https://4ort.xyz/entity/-42490-1991-su (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. 20d ago · KaleemBot bot · 2026-05-16 view diff on Wikidata ↗
    Argument of periapsis → {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount':
    Orbital eccentricity → {'unit': '1', 'amount': '+0.1381942477642584'}
    Semi-major axis of an orbit → {'unit': 'http://www.wikidata.org/entity/Q1811', 'amount': '
    Absolute magnitude → {'unit': '1', 'amount': '+14.38'}
    + 26 other properties edited (see Wikidata diff for full list)
    "/* wbeditentity-update:0| */ Added [[wikipedia:ur:(42490) 1991 ایس یو]]"
Live feed via Wikidata EventStreams. New edits appear within minutes of being made on Wikidata.