Home › Entities › asteroid › (18754) 1999 GL21

(18754) 1999 GL21

asteroid
Place asteroid Q22345540
Press Enter · cited answer in seconds

(18754) 1999 GL21

Summary

(18754) 1999 GL21 is an asteroid[1].

Key Facts

  • (18754) 1999 GL21 is credited with the discovery of Lincoln Near-Earth Asteroid Research[2].
  • (18754) 1999 GL21's instance of is recorded as asteroid[3].
  • (18754) 1999 GL21's site of astronomical discovery is recorded as Magdalena Ridge Observatory[4].
  • (18754) 1999 GL21's follows is recorded as (18753) 1999 GE17[5].
  • (18754) 1999 GL21's followed by is recorded as 18755 Meduna[6].
  • (18754) 1999 GL21's minor planet group is recorded as asteroid belt[7].
  • (18754) 1999 GL21's parent astronomical body is recorded as Sun[8].
  • (18754) 1999 GL21's provisional designation is recorded as 2000 ON50[9].
  • (18754) 1999 GL21's provisional designation is recorded as 1999 GL21[10].
  • (18754) 1999 GL21's provisional designation is recorded as 1989 UT9[11].
  • (18754) 1999 GL21's provisional designation is recorded as 1978 TB9[12].
  • (18754) 1999 GL21's time of discovery or invention is recorded as +1999-04-15T00:00:00Z[13].
  • (18754) 1999 GL21's JPL Small-Body Database SPK-ID is recorded as 20018754[14].
  • (18754) 1999 GL21's orbital eccentricity is recorded as {'unit': '1', 'amount': '+0.12'}[15].
  • (18754) 1999 GL21's orbital eccentricity is recorded as {'unit': '1', 'amount': '+0.1152596'}[16].
  • (18754) 1999 GL21's orbital eccentricity is recorded as {'unit': '1', 'amount': '+0.1167625098830469'}[17].
  • (18754) 1999 GL21's absolute magnitude is recorded as {'unit': '1', 'amount': '+13.6'}[18].
  • (18754) 1999 GL21's absolute magnitude is recorded as {'unit': '1', 'amount': '+13.69'}[19].
  • (18754) 1999 GL21's orbital inclination is recorded as {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+7.26380'}[20].
  • (18754) 1999 GL21's orbital inclination is recorded as {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+7.26475987773739'}[21].
  • (18754) 1999 GL21's orbital period is recorded as {'unit': 'http://www.wikidata.org/entity/Q577', 'amount': '+3.71'}[22].
  • (18754) 1999 GL21's orbital period is recorded as {'unit': 'http://www.wikidata.org/entity/Q573', 'amount': '+1353.283338116175'}[23].
  • (18754) 1999 GL21's rotation period is recorded as {'unit': 'http://www.wikidata.org/entity/Q25235', 'amount': '+5.676'}[24].
  • (18754) 1999 GL21's longitude of ascending node is recorded as {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+39.20934'}[25].
  • (18754) 1999 GL21's longitude of ascending node is recorded as {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+39.16948456807782'}[26].

Body

Designation and Status

(18754) 1999 GL21'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] ↑ . 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 . wikidata.org.
  14. [15] ↑ . wikidata.org.
  15. [16] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.
  16. [17] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  17. [18] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.
  18. [19] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  19. [20] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.
  20. [21] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  21. [22] ↑ . minorplanetcenter.net. minorplanetcenter.net. 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] ↑ . minorplanetcenter.net. minorplanetcenter.net. 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). (18754) 1999 GL21. Retrieved May 3, 2026, from https://4ort.xyz/entity/-18754-1999-gl21
MLA “(18754) 1999 GL21.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/-18754-1999-gl21.
BibTeX @misc{4ortxyz_-18754-1999-gl21_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{(18754) 1999 GL21}}, year = {2026}, url = {https://4ort.xyz/entity/-18754-1999-gl21}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): (18754) 1999 GL21 — https://4ort.xyz/entity/-18754-1999-gl21 (retrieved 2026-05-03)

Canonical URL: https://4ort.xyz/entity/-18754-1999-gl21 · Last refreshed: