10500 Nishi-koen
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Discovery and designation
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| Discovered by | M. Koishikawa |
| Discovery site | Ayashi Station of the Sendai Astronomical Observatory |
| Discovery date | April 3, 1987 |
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Designations
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| MPC designation | 10500 |
| Alternative names[1] | 1987 GA |
| Epoch May 14, 2008 | |
| Ap | 3.2115064 |
| Peri | 2.1537970 |
| Eccentricity | 0.1971388 |
| Orbital period | 1604.8884903 |
| Mean anomaly | 262.29914 |
| Inclination | 11.07151 |
| Longitude of ascending node | 49.61164 |
| Argument of peri | 166.88408 |
| Absolute magnitude | 12.9 |
10500 Nishi-koen (1987 GA) is a Main-belt Asteroid discovered on April 3, 1987 by M. Koishikawa at the Ayashi Station of the Sendai Astronomical Observatory.

