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Discovery and designation
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| Discovered by | M. Koishikawa |
| Discovery site | Ayashi Station |
| Discovery date | November 24, 1989 |
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Designations
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| MPC designation | 4871 |
| Alternate name(s) | 1989 WH1 |
| Epoch May 14, 2008 | |
| Ap | 2.5026533 |
| Peri | 2.0122499 |
| Eccentricity | 0.1086188 |
| Orbital period | 1238.8710664 |
| Mean anomaly | 174.09573 |
| Inclination | 2.89404 |
| Longitude of ascending node | 263.78339 |
| Argument of peri | 141.80866 |
| Absolute magnitude (H) | 13.3 |
4871 Riverside (1989 WH1) is a main-belt asteroid discovered on November 24, 1989 by M. Koishikawa at Ayashi Station.
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