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Discovery and designation
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|---|---|
| Discovered by | F. Borngen and L. D. Schmadel |
| Discovery site | Tautenburg |
| Discovery date | October 14, 1990 |
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Designations
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| MPC designation | 11887 |
| Alternate name(s) | 1990 TV12 |
| Epoch May 14, 2008 | |
| Ap | 5.6663032 |
| Peri | 4.7119520 |
| Eccentricity | 0.0919568 |
| Orbital period | 4317.5754223 |
| Mean anomaly | 231.33955 |
| Inclination | 24.03602 |
| Longitude of ascending node | 242.63962 |
| Argument of peri | 111.16371 |
| Absolute magnitude (H) | 11.0 |
11887 Echemmon (1990 TV12) is a Jupiter Trojan discovered on October 14, 1990 by F. Borngen and L. D. Schmadel at Tautenburg.
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