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(46566) 1991 RW21

minor planet
Place asteroid Q4543633
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(46566) 1991 RW21

Summary

(46566) 1991 RW21 is an asteroid[1].

Key Facts

  • (46566) 1991 RW21 is credited with the discovery of Henry E. Holt[2].
  • (46566) 1991 RW21's instance of is recorded as asteroid[3].
  • (46566) 1991 RW21's site of astronomical discovery is recorded as Palomar Observatory[4].
  • (46566) 1991 RW21 followed (46565) 1991 RF17[5].
  • (46566) 1991 RW21 was followed by (46567) 1991 RV23[6].
  • (46566) 1991 RW21's minor planet group is recorded as asteroid belt[7].
  • (46566) 1991 RW21's parent astronomical body is recorded as Sun[8].
  • (46566) 1991 RW21's provisional designation is recorded as 1991 RW21[9].
  • (46566) 1991 RW21's provisional designation is recorded as 1996 DQ7[10].
  • (46566) 1991 RW21's time of discovery or invention is recorded as September 11, 1991[11].
  • (46566) 1991 RW21's orbital eccentricity is recorded as {'unit': '1', 'amount': '+0.2553904315971144'}[12].
  • (46566) 1991 RW21's absolute magnitude is recorded as {'unit': '1', 'amount': '+14.71'}[13].
  • (46566) 1991 RW21's orbital inclination is recorded as {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+9.85821485612729'}[14].
  • (46566) 1991 RW21's orbital period is recorded as {'unit': 'http://www.wikidata.org/entity/Q573', 'amount': '+1378.174320137387'}[15].
  • (46566) 1991 RW21's rotation period is recorded as {'unit': 'http://www.wikidata.org/entity/Q25235', 'amount': '+2.074'}[16].
  • (46566) 1991 RW21's longitude of ascending node is recorded as {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+340.9128213849993'}[17].
  • (46566) 1991 RW21's semi-major axis of an orbit is recorded as {'unit': 'http://www.wikidata.org/entity/Q1811', 'amount': '+2.423653241702022'}[18].
  • (46566) 1991 RW21's apoapsis is recorded as {'unit': 'http://www.wikidata.org/entity/Q1811', 'amount': '+3.042631089142047'}[19].
  • (46566) 1991 RW21's periapsis is recorded as {'unit': 'http://www.wikidata.org/entity/Q1811', 'amount': '+1.804675394261997'}[20].
  • (46566) 1991 RW21's argument of periapsis is recorded as {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+71.55126174534955'}[21].
  • (46566) 1991 RW21's mean anomaly is recorded as {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+341.4778307884637'}[22].
  • (46566) 1991 RW21's diameter is recorded as {'unit': 'http://www.wikidata.org/entity/Q828224', 'amount': '+6.513'}[23].
  • (46566) 1991 RW21's albedo is recorded as {'unit': '1', 'amount': '+0.073'}[24].
  • (46566) 1991 RW21's epoch is recorded as November 21, 2025[25].
  • (46566) 1991 RW21's time of periapsis is recorded as {'unit': 'http://www.wikidata.org/entity/Q14267', 'amount': '+2461071.4077165574'}[26].

Body

Designation and Status

(46566) 1991 RW21'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). (46566) 1991 RW21. Retrieved May 3, 2026, from https://4ort.xyz/entity/-46566-1991-rw21
MLA “(46566) 1991 RW21.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/-46566-1991-rw21.
BibTeX @misc{4ortxyz_-46566-1991-rw21_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{(46566) 1991 RW21}}, year = {2026}, url = {https://4ort.xyz/entity/-46566-1991-rw21}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): (46566) 1991 RW21 — https://4ort.xyz/entity/-46566-1991-rw21 (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 · KaleemBot bot · 2026-05-13 view diff on Wikidata ↗
    Periapsis → {'unit': 'http://www.wikidata.org/entity/Q1811', 'amount': '
    Epoch → November 21, 2025
    Imported from → —
    Semi-major axis of an orbit → {'unit': 'http://www.wikidata.org/entity/Q1811', 'amount': '
    + 26 other properties edited (see Wikidata diff for full list)
    "/* wbeditentity-update:0| */ Added [[wikipedia:ur:(46566) 1991 آر ڈبلیو 21]]"
Live feed via Wikidata EventStreams. New edits appear within minutes of being made on Wikidata.