|
Discovery and designation
|
|
|---|---|
| Discovered by | T. Okuni |
| Discovery site | Nanyo |
| Discovery date | June 21, 1999 |
|
Designations
|
|
| MPC designation | 18818 |
| Alternate name(s) | 1999 MB2 |
| Epoch May 14, 2008 | |
| Ap | 2.5952395 |
| Peri | 1.9756407 |
| Eccentricity | 0.1355535 |
| Orbital period | 1261.9820374 |
| Mean anomaly | 266.55122 |
| Inclination | 6.08760 |
| Longitude of ascending node | 129.94754 |
| Argument of peri | 87.44862 |
| Absolute magnitude (H) | 13.9 |
18818 Yasuhiko (1999 MB2) is a main-belt asteroid discovered on June 21, 1999 by T. Okuni at Nanyo.