|
Discovery and designation
|
|
|---|---|
| Discovered by | Lincoln Laboratory Near-Earth Asteroid Research Team |
| Discovery site | Socorro |
| Discovery date | September 9, 1999 |
|
Designations
|
|
| MPC designation | 20559 |
| Alternate name(s) | 1999 RJ118 |
| Epoch May 14, 2008 | |
| Ap | 3.0843466 |
| Peri | 2.0916656 |
| Eccentricity | 0.1917849 |
| Orbital period | 1520.7098505 |
| Mean anomaly | 58.14308 |
| Inclination | 7.39791 |
| Longitude of ascending node | 166.91692 |
| Argument of peri | 123.21056 |
| Absolute magnitude (H) | 14.7 |
20559 Sheridanlamp (1999 RJ118) is a main-belt asteroid discovered on September 9, 1999 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro. It is named after Sheridan Lamp, a teacher at Vernon Middle School in Vernon, Texas and mentor of a finalist at the 2004 Discovery Channel Young Scientist Challenge.