|
Discovery and designation
|
|
|---|---|
| Discovered by | Lincoln Laboratory Near-Earth Asteroid Research Team |
| Discovery site | Socorro |
| Discovery date | May 13, 1999 |
|
Designations
|
|
| MPC designation | 18015 |
| Alternate name(s) | 1999 JD121 |
| Epoch May 14, 2008 | |
| Ap | 2.4616538 |
| Peri | 2.2418366 |
| Eccentricity | 0.0467349 |
| Orbital period | 1317.2973362 |
| Mean anomaly | 250.98657 |
| Inclination | 6.29173 |
| Longitude of ascending node | 190.60490 |
| Argument of peri | 334.03901 |
| Absolute magnitude (H) | 14.7 |
18015 Semenkovich (1999 JD121) is a main-belt asteroid discovered on May 13, 1999 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.