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1999 XB129

asteroid
Thing asteroid Q15189442

Facts

23 properties
Instance of
asteroid
Follows
1993 FK17[3]
Followed by
1997 GD26[4]
Absolute magnitude
+14.74[11]
Albedo
+0.386[21]
Apoapsis
+2.502767150782269[16]
Argument of periapsis
+271.0328133543594[18]
Diameter
+2.82[20]
Discoverer or inventor
Lincoln Near-Earth Asteroid Research[1]
Epoch
November 21, 2025[22]
Longitude of ascending node
+2.407226312534954[14]
Mean anomaly
+120.4296624618725[19]
Minor planet group
asteroid belt[5]
Orbital eccentricity
+0.1342333163744339[10]
Orbital inclination
+6.243970348436083[12]
Orbital period
+1197.224226079034[13]
Parent astronomical body
Sun[6]
Periapsis
+1.910376273327933[17]
Provisional designation
2001 AM18, 1999 XB129[7][8]
Semi-major axis of an orbit
+2.206571712055101[15]
Site of astronomical discovery
Experimental Test Site[2]
Time of discovery or invention
December 12, 1999[9]
Time of periapsis
+2460599.9963626727[23]
🏷️ Also known as
ru 1999 XB129 ru 2001 AM18 zh 小行星75441
🔖 Identifiers · 2
JPL Small-Body Database SPK-ID
20075441
Minor Planet Center body ID
75441

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References

Programmatic citations — every numbered marker resolves to a verifiable graph row below.

Direct Wikidata claims

  1. [1] ↑ . 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. [3] ↑ . wikidata.org.
  4. [4] ↑ . wikidata.org.
  5. [5] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  6. [6] ↑ . wikidata.org.
  7. [7] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  8. [8] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  9. [9] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  10. [10] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  11. [11] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  12. [12] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  13. [13] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  14. [14] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  15. [15] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  16. [16] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  17. [17] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  18. [18] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  19. [19] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  20. [20] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  21. [21] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  22. [22] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  23. [23] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: 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 XB129. Retrieved October 29, 2026, from https://4ort.xyz/entity/q15189442
MLA “1999 XB129.” 4ort.xyz Knowledge Graph, 4ort.xyz, 29 Oct. 2026, https://4ort.xyz/entity/q15189442.
BibTeX @misc{4ortxyz_q15189442_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{1999 XB129}}, year = {2026}, url = {https://4ort.xyz/entity/q15189442}, note = {Accessed: 2026-10-29}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): 1999 XB129 — https://4ort.xyz/entity/q15189442 (retrieved 2026-10-29)

Canonical URL: https://4ort.xyz/entity/q15189442 · Last refreshed:

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. 22w ago · LiMrBot bot · 2026-06-04 view diff on Wikidata ↗
    Apoapsis → {'unit': 'Q1811', 'amount': '+2.502767150782269'}
    Provisional designation → 2001 AM18, 1999 XB129
    JPL Small-Body Database SPK-ID → 20075441
    Periapsis → {'unit': 'Q1811', 'amount': '+1.910376273327933'}
    + 22 other properties edited (see Wikidata diff for full list)
    "/* wbremoveclaims-remove:1| */ Absolute magnitude: 14.77"
Live feed via Wikidata EventStreams. New edits appear within minutes of being made on Wikidata.