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11887 Echemmon

asteroid
Place asteroid Q3597185

Facts

27 properties

Identity

Instance of
asteroid
More facts +26
Follows
11886 Kraske[5]
Followed by
(11888) 1990 UD3[6]
Absolute magnitude
+10.8, +10.85[18][19]
Albedo
+0.095[38]
Apoapsis
+5.656, +5.657435408573921[29][30]
Argument of periapsis
+111.71672, +112.6363406224906[33][34]
Diameter
+31.19[37]
Discoverer or inventor
Freimut Börngen, Lutz D. Schmadel[1][2]
Epoch
November 21, 2025[39]
Lagrangian point
L5 Jupiter-Sun[17]
Longitude of ascending node
+242.65078, +242.6453299336082[25][26]
Mean anomaly
+205.34768, +45.42399142375091[35][36]
Minor planet group
Jupiter trojan, Trojan camp trojan asteroid[7][8]
Named after
Echemmon[4]
Orbital eccentricity
0.09 (0.09–0.09, n=3)[14][15][16]
Orbital inclination
+24.04420, +24.05245303746721[20][21]
Orbital period
+11.8, +4303.903882410289[22][23]
Parent astronomical body
Sun[9]
Periapsis
+4.7079964, +4.698899512652888[31][32]
Provisional designation
1989 SX13, 1990 TV12[10][11]
Rotation period
+8.47[24]
Semi-major axis of an orbit
+5.1820352, +5.178167460613404[27][28]
Significant event
naming[13]
Site of astronomical discovery
Karl Schwarzschild Observatory[3]
Time of discovery or invention
October 14, 1990[12]
Time of periapsis
+2460457.4430748797
🏷️ Also known as
en (11887) Echemmon en Echemmon en (11887) 1990 TV12 en 11887 Echemmon ar آخمينون 11887 de (11887) Echemmon de (11887) Échemmon es (11887) Echemmon fa سیارک ۱۱۸۸۷ fa سیارک 11887 fr (11887) 1990 TV12 fr (11887) Echemmon pt (11887) 1990 TV12 ru (11887) 1990 TV12 ru 1989 SX13 ru 1990 TV12 ru Echemmon zh 小行星11887
🔖 Identifiers · 3
Freebase ID
/m/03y1j5c
JPL Small-Body Database SPK-ID
20011887
Minor Planet Center body ID
11887

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

🔗 Connections
Epoch 1
November 21, 2025
Followed by 1
(11888) 1990 UD3
Followed by (predecessor) 1
(11888) 1990 UD3
Follows 1
11886 Kraske
Instance of 1
asteroid
Minor planet group 1
Jupiter trojan
Parent astronomical body 1
Sun
Preceded by (successor) 1
11886 Kraske
Site of astronomical discovery 1
Karl Schwarzschild 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] ↑ . Minor Planet Center database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  3. [3] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  4. [4] ↑ . wikidata.org.
  5. [5] ↑ . Minor Planet Center database. wikidata.org.
  6. [6] ↑ . wikidata.org.
  7. [7] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  8. [8] ↑ . minorplanetcenter.org. Retrieved . minorplanetcenter.org. 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.

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APA 4ort.xyz Knowledge Graph. (2026). 11887 Echemmon. Retrieved November 7, 2026, from https://4ort.xyz/entity/11887-echemmon
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BibTeX @misc{4ortxyz_11887-echemmon_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{11887 Echemmon}}, year = {2026}, url = {https://4ort.xyz/entity/11887-echemmon}, note = {Accessed: 2026-11-07}}
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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. 26w ago · Shuaib-bot bot · 2026-05-04 view diff on Wikidata ↗
    Site of astronomical discovery → Karl Schwarzschild Observatory
    Semi-major axis of an orbit → {'unit': 'Q1811', 'amount': '+5.1820352'}, {'unit': 'Q1811', 'amount': '+5.178167460613404'}
    Instance of → asteroid
    Significant event → naming
    + 26 other properties edited (see Wikidata diff for full list)
    "/* wbeditentity-update:0| */"
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