|
Discovery and designation
|
|
|---|---|
| Discovered by | N. Sato |
| Discovery site | Chichibu |
| Discovery date | December 28, 1996 |
|
Designations
|
|
| MPC designation | 8581 |
| Alternate name(s) | 1996 YO2 |
| Epoch May 14, 2008 | |
| Ap | 2.9566101 |
| Peri | 2.7134061 |
| Eccentricity | 0.0428930 |
| Orbital period | 1743.5318842 |
| Mean anomaly | 106.21769 |
| Inclination | 3.19884 |
| Longitude of ascending node | 75.17018 |
| Argument of peri | 25.99624 |
| Absolute magnitude (H) | 13.4 |
8581 Johnen (1996 YO2) is a main-belt asteroid discovered on December 28, 1996 by N. Sato at Chichibu.