|
Discovery and designation
|
|
|---|---|
| Discovered by | Lincoln Laboratory Near-Earth Asteroid Research Team |
| Discovery site | Socorro |
| Discovery date | April 18, 1998 |
|
Designations
|
|
| MPC designation | 20321 |
| Alternate name(s) | 1998 HJ19 |
| Epoch May 14, 2008 | |
| Ap | 2.5849337 |
| Peri | 2.0401675 |
| Eccentricity | 0.1177847 |
| Orbital period | 1284.5035494 |
| Mean anomaly | 101.68538 |
| Inclination | 4.84795 |
| Longitude of ascending node | 349.50911 |
| Argument of peri | 55.28411 |
| Absolute magnitude (H) | 15.6 |
20321 Lightdonovan (1998 HJ19) is a main-belt asteroid discovered on April 18, 1998 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.