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8591 Excubitor

asteroid
Thing Asteroid Q1192477

Facts

26 properties
Instance of
asteroid
Follows
8590 Pygargus[6]
Followed by
8592 Rubetra[7]
Absolute magnitude
13.1 (12.9–13.1, n=3)[17][18][19]
Albedo
+0.059[38]
Apoapsis
+3.759, +3.760686164827102[29][30]
Argument of periapsis
+250.74075, +249.8684204718683[33][34]
Diameter
+15.22[37]
Discoverer or inventor
Cornelis Johannes van Houten, Ingrid van Houten-Groeneveld, Tom Gehrels[1][2][3]
Epoch
November 21, 2025[39]
Longitude of ascending node
+82.04604, +81.98536127542098[25][26]
Mean anomaly
+153.33116, +216.6690335240537[35][36]
Minor planet group
asteroid belt[8]
Named after
Great Grey Shrike[5]
Orbital eccentricity
0.19 (0.19–0.19, n=3)[14][15][16]
Orbital inclination
+2.08246, +2.083060898673462[20][21]
Orbital period
+5.61, +2042.218106192528[22][23]
Parent astronomical body
Sun[9]
Periapsis
+2.5519220, +2.539680030399969[31][32]
Provisional designation
1974 CD, 6543 P-L[10][11]
Rotation period
+14.628[24]
Semi-major axis of an orbit
+3.1553736, +3.150183097613536[27][28]
Significant event
naming[13]
Site of astronomical discovery
Palomar Observatory[4]
Show all 26 facts +2
Time of discovery or invention
September 24, 1960[12]
Time of periapsis
+2461813.59193032[40]
🏷️ Also known as
en Excubitor de (8591) Excubitor de 6543 P-L fa سیارک 8591 fa سیارک ۸۵۹۱ ru (8591) 6543 P-L ru 1974 CD ru PLS6543 uk 8591 Excubitor uk 8591 Екскубітор uk (8591) Екскубітор zh 小行星8591
🔖 Identifiers · 3
Freebase ID
/m/03y1m5z
JPL Small-Body Database SPK-ID
20008591
Minor Planet Center body ID
8591

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References

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

Direct Wikidata claims

  1. [1] ↑ . Minor Planet Center database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  2. [2] ↑ . Minor Planet Center database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  3. [3] ↑ . Minor Planet Center database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  4. [4] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  5. [5] ↑ . wikidata.org.
  6. [6] ↑ . Minor Planet Center database. wikidata.org.
  7. [7] ↑ . Minor Planet Center database. wikidata.org.
  8. [8] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  9. [9] ↑ . 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] ↑ . wikidata.org.
  14. [14] ↑ . wikidata.org.
  15. [15] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.
  16. [16] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  17. [17] ↑ . wikidata.org.
  18. [18] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.
  19. [19] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  20. [20] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.
  21. [21] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  22. [22] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.
  23. [23] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  24. [24] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  25. [25] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.
  26. [26] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  27. [27] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.
  28. [28] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  29. [29] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.
  30. [30] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  31. [31] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.
  32. [32] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  33. [33] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.
  34. [34] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  35. [35] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.
  36. [36] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  37. [37] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  38. [38] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  39. [39] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  40. [40] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.

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APA 4ort.xyz Knowledge Graph. (2026). 8591 Excubitor. Retrieved November 11, 2026, from https://4ort.xyz/entity/8591-excubitor
MLA “8591 Excubitor.” 4ort.xyz Knowledge Graph, 4ort.xyz, 11 Nov. 2026, https://4ort.xyz/entity/8591-excubitor.
BibTeX @misc{4ortxyz_8591-excubitor_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{8591 Excubitor}}, year = {2026}, url = {https://4ort.xyz/entity/8591-excubitor}, note = {Accessed: 2026-11-11}}
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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. 8d ago · AbzalM · 2026-11-02 view diff on Wikidata ↗
    Orbital inclination → 2.08246 degree, 2.083061 degree
    Apoapsis → 3.759 astronomical unit, 3.760686 astronomical unit
    Discoverer or inventor → Cornelis Johannes van Houten, Ingrid van Houten-Groeneveld, Tom Gehrels
    Site of astronomical discovery → Palomar Observatory
    + 26 other properties edited (see Wikidata diff for full list)
    "Changed [kaa] labels, descriptions, aliases and claims: kaawiki sitelink"
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