|
Discovery and designation
|
|
|---|---|
| Discovered by | E. W. Elst |
| Discovery site | European Southern Observatory |
| Discovery date | October 7, 1989 |
|
Designations
|
|
| MPC designation | 12261 |
| Named after | Henri Rousseau |
| Alternate name(s) | 1989 TY4 |
| Epoch May 14, 2008 | |
| Ap | 2.5803999 |
| Peri | 1.8761251 |
| Eccentricity | 0.1580323 |
| Orbital period | 1214.9208069 |
| Mean anomaly | 293.80979 |
| Inclination | 5.92569 |
| Longitude of ascending node | 163.94938 |
| Argument of peri | 116.16865 |
| Absolute magnitude (H) | 15.2 |
12261 Ledouanier (1989 TY4) is a main-belt asteroid discovered on October 7, 1989 by E. W. Elst at the European Southern Observatory.