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(66308) 1999 JX40

asteroid
Place asteroid Q15182921
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Key Facts

  • Discoverer or inventor: Lincoln Near-Earth Asteroid Research[1]
  • Site of astronomical discovery: Experimental Test Site[2]
  • Follows: (66307) 1999 JV40[3]
  • Followed by: (66309) 1999 JX41[4]
  • Minor planet group: asteroid belt[5]
  • Parent astronomical body: Sun[6]
  • Provisional designation: 2000 VA17[7], 1999 JX40[8], 1990 WH8[9]
  • Time of discovery or invention: May 10, 1999[10]
  • Orbital eccentricity: 0.0912913924024353[11]
  • Absolute magnitude: 15.36[12]
  • Orbital inclination: 4.922554033608438 degree[13]
  • Orbital period: 1202.534512475696 day[14]
  • Rotation period: 18.026 hour[15]
  • Longitude of ascending node: 186.888559791826 degree[16]
  • Semi-major axis of an orbit: 2.213091728575002 astronomical unit[17]
  • Apoapsis: 2.415127953990926 astronomical unit[18]
  • Periapsis: 2.011055503159077 astronomical unit[19]
  • Argument of periapsis: 146.4385459877886 degree[20]
  • Mean anomaly: 287.4333069703666 degree[21]
  • Diameter: 2.947 km[22]
  • Albedo: 0.118[23]
  • Epoch: November 21, 2025[24]
  • Time of periapsis: 2461242.8998689568 Julian day[25]

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.
  24. [24] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  25. [25] ↑ . 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). (66308) 1999 JX40. Retrieved October 29, 2026, from https://4ort.xyz/entity/-66308-1999-jx40
MLA “(66308) 1999 JX40.” 4ort.xyz Knowledge Graph, 4ort.xyz, 29 Oct. 2026, https://4ort.xyz/entity/-66308-1999-jx40.
BibTeX @misc{4ortxyz_-66308-1999-jx40_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{(66308) 1999 JX40}}, year = {2026}, url = {https://4ort.xyz/entity/-66308-1999-jx40}, note = {Accessed: 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. 24w ago · LiMrBot bot · 2026-05-14 view diff on Wikidata ↗
    Periapsis → {'unit': 'Q1811', 'amount': '+2.011055503159077'}
    Jpl small-body database spk-id → 20066308
    Imported from → —
    Longitude of ascending node → {'unit': 'Q28390', 'amount': '+186.888559791826'}
    + 24 other properties edited (see Wikidata diff for full list)
    "/* wbremoveclaims-remove:1| */ Absolute magnitude: 15.41"
Live feed via Wikidata EventStreams. New edits appear within minutes of being made on Wikidata.