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6641 Bobross

asteroid
Place asteroid Q94816

Facts

26 properties
Instance of
asteroid
Follows
6640 Falorni[4]
Followed by
6642 Henze[5]
Absolute magnitude
13.4 (13.2–13.4, n=3)[16][17][18]
Albedo
+0.273[37]
Apoapsis
+3.303, +3.304016220611048[28][29]
Argument of periapsis
+294.81477, +294.3739839902727[32][33]
Diameter
+6.105[36]
Discoverer or inventor
Henry E. Holt[1]
Epoch
November 21, 2025[38]
Longitude of ascending node
+81.58543, +81.54196716231124[24][25]
Mean anomaly
+27.89774, +178.9722716398377[34][35]
Minor planet group
asteroid belt[6]
Named after
Robert Ross[3]
Orbital eccentricity
0.19 (0.19–0.19, n=3)[13][14][15]
Orbital inclination
+4.87473, +4.87704874163365[19][20]
Orbital period
+4.64, +1691.041177495957[21][22]
Parent astronomical body
Sun[7]
Periapsis
+2.2571064, +2.251620414181992[30][31]
Provisional designation
1981 RY4, 1981 SM6, 1990 OK2[8][9][10]
Rotation period
+5.90268[23]
Semi-major axis of an orbit
+2.7801070, +2.77781831739652[26][27]
Significant event
naming[12]
Site of astronomical discovery
Palomar Observatory[2]
Show all 26 facts +2
Time of discovery or invention
July 29, 1990[11]
Time of periapsis
+2460159.8069972973[39]
🏷️ Also known as
en 6641 Bobross en Bobross de (6641) Bobross fa سیارک 6641 fa سیارک ۶۶۴۱ ru 1981 SM6 ru 1981 RY4 ru 1990 OK2 ru (6641) 1990 OK2 ru Bobross uk 6641 Bobross uk 6641 Бобросс zh 小行星6641
🔖 Identifiers · 3
Freebase ID
/m/03y10f5
JPL Small-Body Database SPK-ID
20006641
Minor Planet Center body ID
6641

Report an error or request removal Lineage (PROV-JSON)

🔗 Connections
Discoverer or inventor 1
Henry E. Holt
Epoch 1
November 21, 2025
Followed by 1
6642 Henze
Followed by (predecessor) 1
6642 Henze
Follows 1
6640 Falorni
Instance of 1
asteroid
Minor planet group 1
asteroid belt
Parent astronomical body 1
Sun
Preceded by (successor) 1
6640 Falorni
Site of astronomical discovery 1
Palomar Observatory
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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] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  3. [3] ↑ . wikidata.org.
  4. [4] ↑ . Minor Planet Center database. wikidata.org.
  5. [5] ↑ . Minor Planet Center database. wikidata.org.
  6. [6] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  7. [7] ↑ . 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] ↑ . wikidata.org.
  13. [13] ↑ . wikidata.org.
  14. [14] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.
  15. [15] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  16. [16] ↑ . wikidata.org.
  17. [17] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.
  18. [18] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  19. [19] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.
  20. [20] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  21. [21] ↑ . minorplanetcenter.net. minorplanetcenter.net. 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.
  24. [24] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.
  25. [25] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  26. [26] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.
  27. [27] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  28. [28] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.
  29. [29] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  30. [30] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.
  31. [31] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  32. [32] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.
  33. [33] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  34. [34] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.
  35. [35] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. 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.

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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). 6641 Bobross. Retrieved November 4, 2026, from https://4ort.xyz/entity/6641-bobross
MLA “6641 Bobross.” 4ort.xyz Knowledge Graph, 4ort.xyz, 4 Nov. 2026, https://4ort.xyz/entity/6641-bobross.
BibTeX @misc{4ortxyz_6641-bobross_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{6641 Bobross}}, year = {2026}, url = {https://4ort.xyz/entity/6641-bobross}, note = {Accessed: 2026-11-04}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): 6641 Bobross — https://4ort.xyz/entity/6641-bobross (retrieved 2026-11-04)

Canonical URL: https://4ort.xyz/entity/6641-bobross · 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. 4d ago · AbzalM · 2026-10-31 view diff on Wikidata ↗
    Periapsis → {'unit': 'Q1811', 'amount': '+2.2571064'}, {'unit': 'Q1811', 'amount': '+2.251620414181992'}
    Orbital period → {'unit': 'Q577', 'amount': '+4.64'}, {'unit': 'Q573', 'amount': '+1691.041177495957'}
    Wikipedia languages → ['ar', 'arz', 'ce', 'en', 'eo', 'es', 'fa', 'fi', 'fr', 'hu', 'hy', 'it', 'kaa',
    Rotation period → {'unit': 'Q25235', 'amount': '+5.90268'}
    + 27 other properties edited (see Wikidata diff for full list)
    "/* wbeditentity-update-languages-and-other-short:0||kaa */ kaawiki sitelink"
Live feed via Wikidata EventStreams. New edits appear within minutes of being made on Wikidata.