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(56341) 1999 XS221

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(56341) 1999 XS221

Summary

(56341) 1999 XS221 is an asteroid[1].

Key Facts

  • (56341) 1999 XS221 is credited with the discovery of Lincoln Near-Earth Asteroid Research[2].
  • (56341) 1999 XS221's instance of is recorded as asteroid[3].
  • (56341) 1999 XS221's site of astronomical discovery is recorded as Experimental Test Site[4].
  • (56341) 1999 XS221's follows is recorded as (56340) 1999 XE176[5].
  • (56341) 1999 XS221's followed by is recorded as (56342) 1999 XW238[6].
  • (56341) 1999 XS221's minor planet group is recorded as outer asteroid belt[7].
  • (56341) 1999 XS221's parent astronomical body is recorded as Sun[8].
  • (56341) 1999 XS221's provisional designation is recorded as 2002 GU7[9].
  • (56341) 1999 XS221's provisional designation is recorded as 1999 XS221[10].
  • (56341) 1999 XS221's time of discovery or invention is recorded as +1999-12-15T00:00:00Z[11].
  • (56341) 1999 XS221's JPL Small-Body Database SPK-ID is recorded as 20056341[12].
  • (56341) 1999 XS221's orbital eccentricity is recorded as {'unit': '1', 'amount': '+0.05413882852753605'}[13].
  • (56341) 1999 XS221's absolute magnitude is recorded as {'unit': '1', 'amount': '+13.75'}[14].
  • (56341) 1999 XS221's orbital inclination is recorded as {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+10.65952298799795'}[15].
  • (56341) 1999 XS221's orbital period is recorded as {'unit': 'http://www.wikidata.org/entity/Q573', 'amount': '+2389.731124096476'}[16].
  • (56341) 1999 XS221's rotation period is recorded as {'unit': 'http://www.wikidata.org/entity/Q25235', 'amount': '+56.78'}[17].
  • (56341) 1999 XS221's longitude of ascending node is recorded as {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+49.0821035867353'}[18].
  • (56341) 1999 XS221's semi-major axis of an orbit is recorded as {'unit': 'http://www.wikidata.org/entity/Q1811', 'amount': '+3.498112255608802'}[19].
  • (56341) 1999 XS221's apoapsis is recorded as {'unit': 'http://www.wikidata.org/entity/Q1811', 'amount': '+3.68749595518528'}[20].
  • (56341) 1999 XS221's periapsis is recorded as {'unit': 'http://www.wikidata.org/entity/Q1811', 'amount': '+3.308728556032325'}[21].
  • (56341) 1999 XS221's argument of periapsis is recorded as {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+246.5382387279732'}[22].
  • (56341) 1999 XS221's mean anomaly is recorded as {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+124.5754958120439'}[23].
  • (56341) 1999 XS221's diameter is recorded as {'unit': 'http://www.wikidata.org/entity/Q828224', 'amount': '+12.354'}[24].
  • (56341) 1999 XS221's albedo is recorded as {'unit': '1', 'amount': '+0.02'}[25].
  • (56341) 1999 XS221's Minor Planet Center body ID is recorded as 56341[26].

Body

Designation and Status

(56341) 1999 XS221'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 . 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] ↑ . 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). (56341) 1999 XS221. Retrieved May 3, 2026, from https://4ort.xyz/entity/-56341-1999-xs221
MLA “(56341) 1999 XS221.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/-56341-1999-xs221.
BibTeX @misc{4ortxyz_-56341-1999-xs221_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{(56341) 1999 XS221}}, year = {2026}, url = {https://4ort.xyz/entity/-56341-1999-xs221}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): (56341) 1999 XS221 — https://4ort.xyz/entity/-56341-1999-xs221 (retrieved 2026-05-03)

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