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(85532) 1997 WD21

minor planet
Place asteroid Q4544383
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(85532) 1997 WD21

Summary

(85532) 1997 WD21 is an asteroid[1].

Key Facts

  • (85532) 1997 WD21 is credited with the discovery of Yoshisada Shimizu[2].
  • (85532) 1997 WD21 is credited with the discovery of Takeshi Urata[3].
  • (85532) 1997 WD21's instance of is recorded as asteroid[4].
  • (85532) 1997 WD21's site of astronomical discovery is recorded as Nachi-Katsuura Observatory[5].
  • (85532) 1997 WD21 followed (85531) 1997 WU17[6].
  • (85532) 1997 WD21 was followed by (85533) 1997 WM22[7].
  • (85532) 1997 WD21's minor planet group is recorded as asteroid belt[8].
  • (85532) 1997 WD21's parent astronomical body is recorded as Sun[9].
  • (85532) 1997 WD21's provisional designation is recorded as 1997 WD21[10].
  • (85532) 1997 WD21's time of discovery or invention is recorded as November 23, 1997[11].
  • (85532) 1997 WD21's orbital eccentricity is recorded as {'unit': '1', 'amount': '+0.1528325049124168'}[12].
  • (85532) 1997 WD21's absolute magnitude is recorded as {'unit': '1', 'amount': '+14.38'}[13].
  • (85532) 1997 WD21's orbital inclination is recorded as {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+13.49966823903227'}[14].
  • (85532) 1997 WD21's orbital period is recorded as {'unit': 'http://www.wikidata.org/entity/Q573', 'amount': '+1608.999258096685'}[15].
  • (85532) 1997 WD21's rotation period is recorded as {'unit': 'http://www.wikidata.org/entity/Q25235', 'amount': '+4.768'}[16].
  • (85532) 1997 WD21's longitude of ascending node is recorded as {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+242.5689863103725'}[17].
  • (85532) 1997 WD21's semi-major axis of an orbit is recorded as {'unit': 'http://www.wikidata.org/entity/Q1811', 'amount': '+2.68723065195332'}[18].
  • (85532) 1997 WD21's apoapsis is recorded as {'unit': 'http://www.wikidata.org/entity/Q1811', 'amount': '+3.097926843768773'}[19].
  • (85532) 1997 WD21's periapsis is recorded as {'unit': 'http://www.wikidata.org/entity/Q1811', 'amount': '+2.276534460137867'}[20].
  • (85532) 1997 WD21's argument of periapsis is recorded as {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+159.9938150969539'}[21].
  • (85532) 1997 WD21's mean anomaly is recorded as {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+146.9884007518474'}[22].
  • (85532) 1997 WD21's diameter is recorded as {'unit': 'http://www.wikidata.org/entity/Q828224', 'amount': '+3.916'}[23].
  • (85532) 1997 WD21's albedo is recorded as {'unit': '1', 'amount': '+0.219'}[24].
  • (85532) 1997 WD21's epoch is recorded as November 21, 2025[25].
  • (85532) 1997 WD21's time of periapsis is recorded as {'unit': 'http://www.wikidata.org/entity/Q14267', 'amount': '+2460343.543811782'}[26].

Body

Designation and Status

(85532) 1997 WD21'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.
  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). (85532) 1997 WD21. Retrieved May 3, 2026, from https://4ort.xyz/entity/-85532-1997-wd21
MLA “(85532) 1997 WD21.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/-85532-1997-wd21.
BibTeX @misc{4ortxyz_-85532-1997-wd21_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{(85532) 1997 WD21}}, year = {2026}, url = {https://4ort.xyz/entity/-85532-1997-wd21}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): (85532) 1997 WD21 — https://4ort.xyz/entity/-85532-1997-wd21 (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. 17w ago · KaleemBot bot · 2026-05-18 view diff on Wikidata ↗
    Discoverer or inventor → Yoshisada Shimizu, Takeshi Urata
    Time of periapsis → {'unit': 'http://www.wikidata.org/entity/Q14267', 'amount':
    Diameter → {'unit': 'http://www.wikidata.org/entity/Q828224', 'amount':
    Absolute magnitude → {'unit': '1', 'amount': '+14.38'}
    + 26 other properties edited (see Wikidata diff for full list)
    "/* wbeditentity-update:0| */ Added [[wikipedia:ur:(85532) 1997 ڈبلیو ڈی 21]]"
Live feed via Wikidata EventStreams. New edits appear within minutes of being made on Wikidata.