|
Discovery and designation
|
|
|---|---|
| Discovered by | E. W. Elst |
| Discovery site | European Southern Observatory |
| Discovery date | April 3, 1989 |
|
Designations
|
|
| MPC designation | 12257 |
| Alternate name(s) | 1989 GL4 |
| Epoch May 14, 2008 | |
| Ap | 2.8567376 |
| Peri | 2.2233652 |
| Eccentricity | 0.1246771 |
| Orbital period | 1478.6390869 |
| Mean anomaly | 228.87915 |
| Inclination | 13.50044 |
| Longitude of ascending node | 204.54779 |
| Argument of peri | 27.53461 |
| Absolute magnitude (H) | 14.1 |
12257 Lassine (1989 GL4) is a main-belt asteroid discovered on April 3, 1989 by E. W. Elst at the European Southern Observatory.