|
Discovery and designation
|
|
|---|---|
| Discovered by | K. Endate and K. Watanabe |
| Discovery site | Kitami |
| Discovery date | September 30, 1989 |
|
Designations
|
|
| MPC designation | 10304 |
| Alternate name(s) | 1989 SY |
| Epoch May 14, 2008 | |
| Ap | 3.2938320 |
| Peri | 1.8380220 |
| Eccentricity | 0.2836811 |
| Orbital period | 1501.2909225 |
| Mean anomaly | 164.85962 |
| Inclination | 12.73091 |
| Longitude of ascending node | 25.89321 |
| Argument of peri | 45.88931 |
| Absolute magnitude (H) | 13.4 |
10304 Iwaki (1989 SY) is a main-belt asteroid discovered on September 30, 1989 by K. Endate and K. Watanabe at Kitami.