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(147957) 1993 TM21

minor planet
Place asteroid Q4541443
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Summary

(147957) 1993 TM21 is an asteroid[1].

Key Facts

  • (147957) 1993 TM21 is credited with the discovery of Henry E. Holt[2].
  • (147957) 1993 TM21's instance of is recorded as asteroid[3].
  • (147957) 1993 TM21's site of astronomical discovery is recorded as Palomar Observatory[4].
  • (147957) 1993 TM21's follows is recorded as (147956) 1993 TG11[5].
  • (147957) 1993 TM21's followed by is recorded as (147958) 1993 TN25[6].
  • (147957) 1993 TM21's minor planet group is recorded as asteroid belt[7].
  • (147957) 1993 TM21's parent astronomical body is recorded as Sun[8].
  • (147957) 1993 TM21's provisional designation is recorded as 1993 TM21[9].
  • (147957) 1993 TM21's provisional designation is recorded as 2001 QY253[10].
  • (147957) 1993 TM21's time of discovery or invention is recorded as +1993-10-10T00:00:00Z[11].
  • (147957) 1993 TM21's Freebase ID is recorded as /m/0h64hch[12].
  • (147957) 1993 TM21's JPL Small-Body Database SPK-ID is recorded as 20147957[13].
  • (147957) 1993 TM21's orbital eccentricity is recorded as {'unit': '1', 'amount': '+0.2577826534747696'}[14].
  • (147957) 1993 TM21's absolute magnitude is recorded as {'unit': '1', 'amount': '+15.99'}[15].
  • (147957) 1993 TM21's orbital inclination is recorded as {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+6.534167629563232'}[16].
  • (147957) 1993 TM21's orbital period is recorded as {'unit': 'http://www.wikidata.org/entity/Q573', 'amount': '+1514.259016614171'}[17].
  • (147957) 1993 TM21's longitude of ascending node is recorded as {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+31.16554301032978'}[18].
  • (147957) 1993 TM21's semi-major axis of an orbit is recorded as {'unit': 'http://www.wikidata.org/entity/Q1811', 'amount': '+2.580682009769133'}[19].
  • (147957) 1993 TM21's apoapsis is recorded as {'unit': 'http://www.wikidata.org/entity/Q1811', 'amount': '+3.245937066022021'}[20].
  • (147957) 1993 TM21's periapsis is recorded as {'unit': 'http://www.wikidata.org/entity/Q1811', 'amount': '+1.915426953516244'}[21].
  • (147957) 1993 TM21's argument of periapsis is recorded as {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+23.10735153908811'}[22].
  • (147957) 1993 TM21's mean anomaly is recorded as {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+250.8574946497719'}[23].
  • (147957) 1993 TM21's diameter is recorded as {'unit': 'http://www.wikidata.org/entity/Q828224', 'amount': '+3.091'}[24].
  • (147957) 1993 TM21's albedo is recorded as {'unit': '1', 'amount': '+0.07'}[25].
  • (147957) 1993 TM21's Minor Planet Center body ID is recorded as 147957[26].

Body

Designation and Status

(147957) 1993 TM21'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] ↑ . wikidata.org.
  12. [13] ↑ . JPL Small-Body Database. Retrieved . 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] ↑ . 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). (147957) 1993 TM21. Retrieved October 10, 2026, from https://4ort.xyz/entity/-147957-1993-tm21
MLA “(147957) 1993 TM21.” 4ort.xyz Knowledge Graph, 4ort.xyz, 10 Oct. 2026, https://4ort.xyz/entity/-147957-1993-tm21.
BibTeX @misc{4ortxyz_-147957-1993-tm21_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{(147957) 1993 TM21}}, year = {2026}, url = {https://4ort.xyz/entity/-147957-1993-tm21}, note = {Accessed: 2026-10-10}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): (147957) 1993 TM21 — https://4ort.xyz/entity/-147957-1993-tm21 (retrieved 2026-10-10)

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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. 23w ago · Shuaib-bot bot · 2026-05-04 view diff on Wikidata ↗
    Orbital period → {'unit': 'http://www.wikidata.org/entity/Q573', 'amount': '+
    Argument of periapsis → {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount':
    Mean anomaly → {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount':
    Epoch → November 21, 2025
    + 24 other properties edited (see Wikidata diff for full list)
    "/* wbeditentity-update:0| */"
Live feed via Wikidata EventStreams. New edits appear within minutes of being made on Wikidata.