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1999 XR263

asteroid
Thing Asteroid Q15191777

Facts

23 properties
Instance of
asteroid
Follows
2001 FL32[3]
Followed by
2001 FE34[4]
Absolute magnitude
15.68[11]
Albedo
0.049[21]
Apoapsis
2.882404444954132 astronomical unit[16]
Argument of periapsis
23.3339130487377 degree[18]
Diameter
3.947 km[20]
Discoverer or inventor
Lincoln Near-Earth Asteroid Research[1]
Epoch
June 9, 2026[22]
Longitude of ascending node
221.7214507172984 degree[14]
Mean anomaly
316.0399963060733 degree[19]
Minor planet group
asteroid belt[5]
Orbital eccentricity
0.1151303415710589[10]
Orbital inclination
4.586296610327602 degree[12]
Orbital period
1,517.897186899417 day[13]
Parent astronomical body
Sun[6]
Periapsis
2.287223422750081 astronomical unit[17]
Provisional designation
2001 FZ33, 1999 XR263[7][8]
Semi-major axis of an orbit
2.584813933852106 astronomical unit[15]
Site of astronomical discovery
Experimental Test Site[2]
Time of discovery or invention
March 18, 2001[9]
Time of periapsis
2,461,385.8521276196 Julian day[23]
🏷️ Also known as
ru 1999 XR263 ru 2001 FZ33 zh 小行星77225
🔖 Identifiers · 2
JPL Small-Body Database SPK-ID
20077225
Minor Planet Center body ID
77225

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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.

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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 XR263. Retrieved October 29, 2026, from https://4ort.xyz/entity/q15191777
MLA “1999 XR263.” 4ort.xyz Knowledge Graph, 4ort.xyz, 29 Oct. 2026, https://4ort.xyz/entity/q15191777.
BibTeX @misc{4ortxyz_q15191777_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{1999 XR263}}, year = {2026}, url = {https://4ort.xyz/entity/q15191777}, note = {Accessed: 2026-10-29}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): 1999 XR263 — https://4ort.xyz/entity/q15191777 (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. 22w ago · LiMrBot bot · 2026-06-07 view diff on Wikidata ↗
    Absolute magnitude → 15.68
    Apoapsis → 2.882404 astronomical unit
    Semi-major axis of an orbit → 2.584814 astronomical unit
    Parent astronomical body → Sun
    + 22 other properties edited (see Wikidata diff for full list)
    "Removed claim: Orbital eccentricity: 0.1152627211735031±0.00000003323"
Live feed via Wikidata EventStreams. New edits appear within minutes of being made on Wikidata.