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(137504) 1999 VO21

asteroid
Place asteroid Q63260121
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Summary

(137504) 1999 VO21 is an asteroid[1].

Key Facts

  • (137504) 1999 VO21 is credited with the discovery of Korado Korlević[2].
  • (137504) 1999 VO21's instance of is recorded as asteroid[3].
  • (137504) 1999 VO21's site of astronomical discovery is recorded as Višnjan Observatory[4].
  • (137504) 1999 VO21's follows is recorded as (137503) 1999 VZ19[5].
  • (137504) 1999 VO21's followed by is recorded as (137505) 1999 VZ21[6].
  • (137504) 1999 VO21's minor planet group is recorded as Mars-crossing asteroid[7].
  • (137504) 1999 VO21's parent astronomical body is recorded as Sun[8].
  • (137504) 1999 VO21's provisional designation is recorded as 1999 VO21[9].
  • (137504) 1999 VO21's time of discovery or invention is recorded as +1999-11-12T00:00:00Z[10].
  • (137504) 1999 VO21's JPL Small-Body Database SPK-ID is recorded as 20137504[11].
  • (137504) 1999 VO21's orbital eccentricity is recorded as {'unit': '1', 'amount': '+0.3189822828209392'}[12].
  • (137504) 1999 VO21's absolute magnitude is recorded as {'unit': '1', 'amount': '+16.86'}[13].
  • (137504) 1999 VO21's orbital inclination is recorded as {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+11.09747820899443'}[14].
  • (137504) 1999 VO21's orbital period is recorded as {'unit': 'http://www.wikidata.org/entity/Q573', 'amount': '+1290.371742493381'}[15].
  • (137504) 1999 VO21's rotation period is recorded as {'unit': 'http://www.wikidata.org/entity/Q25235', 'amount': '+2.538'}[16].
  • (137504) 1999 VO21's longitude of ascending node is recorded as {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+223.8673786033415'}[17].
  • (137504) 1999 VO21's semi-major axis of an orbit is recorded as {'unit': 'http://www.wikidata.org/entity/Q1811', 'amount': '+2.319588488231331'}[18].
  • (137504) 1999 VO21's apoapsis is recorded as {'unit': 'http://www.wikidata.org/entity/Q1811', 'amount': '+3.059496119412533'}[19].
  • (137504) 1999 VO21's periapsis is recorded as {'unit': 'http://www.wikidata.org/entity/Q1811', 'amount': '+1.57968085705013'}[20].
  • (137504) 1999 VO21's argument of periapsis is recorded as {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+115.2028961050727'}[21].
  • (137504) 1999 VO21's mean anomaly is recorded as {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+112.806228309019'}[22].
  • (137504) 1999 VO21's Minor Planet Center body ID is recorded as 137504[23].
  • (137504) 1999 VO21's epoch is recorded as May 5, 2025[24].
  • (137504) 1999 VO21's time of periapsis is recorded as {'unit': 'http://www.wikidata.org/entity/Q14267', 'amount': '+2460396.1611961466'}[25].

Body

Designation and Status

(137504) 1999 VO21'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 . 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] ↑ . 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). (137504) 1999 VO21. Retrieved May 3, 2026, from https://4ort.xyz/entity/-137504-1999-vo21
MLA “(137504) 1999 VO21.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/-137504-1999-vo21.
BibTeX @misc{4ortxyz_-137504-1999-vo21_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{(137504) 1999 VO21}}, year = {2026}, url = {https://4ort.xyz/entity/-137504-1999-vo21}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): (137504) 1999 VO21 — https://4ort.xyz/entity/-137504-1999-vo21 (retrieved 2026-05-03)

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