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(46736) 1997 UD21

minor planet
Place asteroid Q4543664
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(46736) 1997 UD21

Summary

(46736) 1997 UD21 is an asteroid[1].

Key Facts

  • (46736) 1997 UD21 is credited with the discovery of Beijing Schmidt CCD Asteroid Program[2].
  • (46736) 1997 UD21's instance of is recorded as asteroid[3].
  • (46736) 1997 UD21's site of astronomical discovery is recorded as Xinglong Station[4].
  • (46736) 1997 UD21 followed (46735) 1997 UG1[5].
  • (46736) 1997 UD21 was followed by 46737 Anpanman[6].
  • (46736) 1997 UD21's minor planet group is recorded as asteroid belt[7].
  • (46736) 1997 UD21's parent astronomical body is recorded as Sun[8].
  • (46736) 1997 UD21's provisional designation is recorded as 1997 UD21[9].
  • (46736) 1997 UD21's provisional designation is recorded as 2000 EF23[10].
  • (46736) 1997 UD21's time of discovery or invention is recorded as October 31, 1997[11].
  • (46736) 1997 UD21's orbital eccentricity is recorded as {'unit': '1', 'amount': '+0.1421415905202086'}[12].
  • (46736) 1997 UD21's absolute magnitude is recorded as {'unit': '1', 'amount': '+14.74'}[13].
  • (46736) 1997 UD21's orbital inclination is recorded as {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+4.645746869522248'}[14].
  • (46736) 1997 UD21's orbital period is recorded as {'unit': 'http://www.wikidata.org/entity/Q573', 'amount': '+2082.952670631417'}[15].
  • (46736) 1997 UD21's longitude of ascending node is recorded as {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+344.5803237880882'}[16].
  • (46736) 1997 UD21's semi-major axis of an orbit is recorded as {'unit': 'http://www.wikidata.org/entity/Q1811', 'amount': '+3.19193459200639'}[17].
  • (46736) 1997 UD21's apoapsis is recorded as {'unit': 'http://www.wikidata.org/entity/Q1811', 'amount': '+3.645641251750651'}[18].
  • (46736) 1997 UD21's periapsis is recorded as {'unit': 'http://www.wikidata.org/entity/Q1811', 'amount': '+2.738227932262129'}[19].
  • (46736) 1997 UD21's argument of periapsis is recorded as {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+0.1860567610948863'}[20].
  • (46736) 1997 UD21's mean anomaly is recorded as {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+9.582442313081014'}[21].
  • (46736) 1997 UD21's diameter is recorded as {'unit': 'http://www.wikidata.org/entity/Q828224', 'amount': '+5.586'}[22].
  • (46736) 1997 UD21's albedo is recorded as {'unit': '1', 'amount': '+0.098'}[23].
  • (46736) 1997 UD21's epoch is recorded as November 21, 2025[24].
  • (46736) 1997 UD21's time of periapsis is recorded as {'unit': 'http://www.wikidata.org/entity/Q14267', 'amount': '+2460945.056183869'}[25].

Body

Designation and Status

(46736) 1997 UD21'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.

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). (46736) 1997 UD21. Retrieved May 3, 2026, from https://4ort.xyz/entity/-46736-1997-ud21
MLA “(46736) 1997 UD21.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/-46736-1997-ud21.
BibTeX @misc{4ortxyz_-46736-1997-ud21_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{(46736) 1997 UD21}}, year = {2026}, url = {https://4ort.xyz/entity/-46736-1997-ud21}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): (46736) 1997 UD21 — https://4ort.xyz/entity/-46736-1997-ud21 (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. 19d ago · KaleemBot bot · 2026-05-15 view diff on Wikidata ↗
    Orbital eccentricity → {'unit': '1', 'amount': '+0.1421415905202086'}
    Albedo → {'unit': '1', 'amount': '+0.098'}
    Jpl small-body database spk-id → 20046736
    Orbital period → {'unit': 'http://www.wikidata.org/entity/Q573', 'amount': '+
    + 25 other properties edited (see Wikidata diff for full list)
    "/* wbeditentity-update:0| */ Added [[wikipedia:ur:(46736) 1997 یو ڈی 21]]"
Live feed via Wikidata EventStreams. New edits appear within minutes of being made on Wikidata.