|
Discovery and designation
|
|
|---|---|
| Discovered by | Lincoln Laboratory Near-Earth Asteroid Research Team |
| Discovery site | Socorro |
| Discovery date | September 7, 1999 |
|
Designations
|
|
| MPC designation | 22815 |
| Alternate name(s) | 1999 RN18 |
| Epoch May 14, 2008 | |
| Ap | 2.7066532 |
| Peri | 1.9739210 |
| Eccentricity | 0.1565475 |
| Orbital period | 1307.6819887 |
| Mean anomaly | 152.81942 |
| Inclination | 6.21517 |
| Longitude of ascending node | 194.66604 |
| Argument of peri | 154.76406 |
| Absolute magnitude (H) | 15.3 |
22815 Sewell (1999 RN18) is a main-belt asteroid discovered on September 7, 1999 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.