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1999 XM158

asteroid
Thing asteroid Q15193564
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Summary

1999 XM158 is an asteroid[1]. It is known by 3 alternative names across languages and contexts.[2]

Key Facts

  • Discoverer or inventor: Lincoln Near-Earth Asteroid Research[3]
  • Site of astronomical discovery: Experimental Test Site[4]
  • Follows: 1999 XQ157[5]
  • Followed by: 1999 XE159[6]
  • Minor planet group: asteroid belt[7]
  • Parent astronomical body: Sun[8]
  • Provisional designation: 2001 FN90[9], 1999 XM158[10]
  • Time of discovery or invention: December 8, 1999[11]
  • Orbital eccentricity: 0.1299843382247178[12]
  • Absolute magnitude: 16.12[13]
  • Orbital inclination: 4.032373095777617 degree[14]
  • Orbital period: 1245.892812101415 day[15]
  • Longitude of ascending node: 215.505556630798 degree[16]
  • Semi-major axis of an orbit: 2.26597354701295 astronomical unit[17]
  • Apoapsis: 2.560514618956145 astronomical unit[18]
  • Periapsis: 1.971432475069755 astronomical unit[19]
  • Argument of periapsis: 93.10367263174324 degree[20]
  • Mean anomaly: 32.99480731461922 degree[21]
  • Diameter: 2.132 km[22]
  • Albedo: 0.186[23]
  • Epoch: June 9, 2026[24]
  • Time of periapsis: 2461086.3111298056 Julian day[25]

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. [4] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  3. [5] ↑ . wikidata.org.
  4. [6] ↑ . wikidata.org.
  5. [7] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  6. [8] ↑ . wikidata.org.
  7. [9] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  8. [10] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  9. [11] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  10. [12] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  11. [13] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  12. [14] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  13. [15] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  14. [16] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  15. [17] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  16. [18] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  17. [19] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  18. [20] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  19. [21] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  20. [22] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  21. [23] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  22. [24] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  23. [25] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.

Class ancestry

  1. [1] ↑ . Wikidata. wikidata.org.

Aggregate / graph-position facts

  1. [2] ↑ . Wikidata aliases. 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). 1999 XM158. Retrieved October 29, 2026, from https://4ort.xyz/entity/q15193564
MLA “1999 XM158.” 4ort.xyz Knowledge Graph, 4ort.xyz, 29 Oct. 2026, https://4ort.xyz/entity/q15193564.
BibTeX @misc{4ortxyz_q15193564_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{1999 XM158}}, year = {2026}, url = {https://4ort.xyz/entity/q15193564}, note = {Accessed: 2026-10-29}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): 1999 XM158 — https://4ort.xyz/entity/q15193564 (retrieved 2026-10-29)

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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. 20w ago · LiMrBot bot · 2026-06-09 view diff on Wikidata ↗
    Jpl small-body database spk-id → 20080377
    Time of periapsis → {'unit': 'Q14267', 'amount': '+2461086.3111298056'}
    Epoch → June 9, 2026
    Parent astronomical body → Sun
    + 23 other properties edited (see Wikidata diff for full list)
    "/* wbremoveclaims-remove:1| */ Absolute magnitude: 16.16"
Live feed via Wikidata EventStreams. New edits appear within minutes of being made on Wikidata.