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1999 XU1

asteroid
Thing asteroid Q15189808

Facts

20 properties
Instance of
asteroid
Follows
1999 XX[2]
Followed by
1999 XH3[3]
Absolute magnitude
+15.93[10]
Apoapsis
+2.333734947018009[15]
Argument of periapsis
+61.09348202441507[17]
Discoverer or inventor
Walter R. Cooney, Jr.[1]
Epoch
November 21, 2025[19]
Longitude of ascending node
+73.32372617583937[13]
Mean anomaly
+208.0607482944167[18]
Minor planet group
asteroid belt[4]
Orbital eccentricity
+0.04459649956086692[9]
Orbital inclination
+6.77521325735414[11]
Orbital period
+1219.699574007956[12]
Parent astronomical body
Sun[5]
Periapsis
+2.134468704820911[16]
Provisional designation
2001 KK33, 1999 XU1[6][7]
Semi-major axis of an orbit
+2.23410182591946[14]
Time of discovery or invention
December 3, 1999[8]
Time of periapsis
+2461515.2784460564[20]
🏷️ Also known as
ru 1999 XU1 ru 2001 KK33 zh 小行星75249
🔖 Identifiers · 2
JPL Small-Body Database SPK-ID
20075249
Minor Planet Center body ID
75249

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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] ↑ . wikidata.org.
  3. [3] ↑ . wikidata.org.
  4. [4] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  5. [5] ↑ . wikidata.org.
  6. [6] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: 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.

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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 XU1. Retrieved October 29, 2026, from https://4ort.xyz/entity/q15189808
MLA “1999 XU1.” 4ort.xyz Knowledge Graph, 4ort.xyz, 29 Oct. 2026, https://4ort.xyz/entity/q15189808.
BibTeX @misc{4ortxyz_q15189808_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{1999 XU1}}, year = {2026}, url = {https://4ort.xyz/entity/q15189808}, note = {Accessed: 2026-10-29}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): 1999 XU1 — https://4ort.xyz/entity/q15189808 (retrieved 2026-10-29)

Canonical URL: https://4ort.xyz/entity/q15189808 · 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. 21w ago · LiMrBot bot · 2026-06-06 view diff on Wikidata ↗
    Apoapsis → {'unit': 'Q1811', 'amount': '+2.333734947018009'}
    Provisional designation → 2001 KK33, 1999 XU1
    JPL Small-Body Database SPK-ID → 20075249
    Periapsis → {'unit': 'Q1811', 'amount': '+2.134468704820911'}
    + 19 other properties edited (see Wikidata diff for full list)
    "/* wbremoveclaims-remove:1| */ Absolute magnitude: 15.94"
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