|
Discovery and designation
|
|
|---|---|
| Discovered by | Lincoln Laboratory Near-Earth Asteroid Research Team |
| Discovery site | Socorro |
| Discovery date | September 7, 1999 |
|
Designations
|
|
| MPC designation | 18843 |
| Alternate name(s) | 1999 RK22 |
| Epoch May 14, 2008 | |
| Ap | 3.5212080 |
| Peri | 2.4968282 |
| Eccentricity | 0.1702183 |
| Orbital period | 1906.4947976 |
| Mean anomaly | 147.17142 |
| Inclination | 1.49763 |
| Longitude of ascending node | 46.37462 |
| Argument of peri | 63.81272 |
| Absolute magnitude (H) | 14.3 |
18843 Ningzhou (1999 RK22) is a main-belt asteroid discovered on September 7, 1999 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.