|
Discovery and designation
|
|
|---|---|
| Discovered by | Lincoln Laboratory Near-Earth Asteroid Research Team |
| Discovery site | Socorro |
| Discovery date | April 21, 1998 |
|
Designations
|
|
| MPC designation | 20336 |
| Alternate name(s) | 1998 HY61 |
| Epoch May 14, 2008 | |
| Ap | 3.1121742 |
| Peri | 2.1580792 |
| Eccentricity | 0.1810340 |
| Orbital period | 1562.4303552 |
| Mean anomaly | 344.79713 |
| Inclination | 2.14909 |
| Longitude of ascending node | 183.89455 |
| Argument of peri | 177.93780 |
| Absolute magnitude (H) | 15.1 |
20336 Gretamills (1998 HY61) is a main-belt asteroid discovered on April 21, 1998 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.