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Discovery and designation
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| Discovered by | A. Nakamura |
| Discovery site | Kuma Kogen |
| Discovery date | February 4, 1998 |
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Designations
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| MPC designation | 15415 |
| Alternate name(s) | 1998 CA1 |
| Epoch May 14, 2008 | |
| Ap | 2.7035302 |
| Peri | 1.6985842 |
| Eccentricity | 0.2282871 |
| Orbital period | 1192.7390025 |
| Mean anomaly | 187.91565 |
| Inclination | 7.47826 |
| Longitude of ascending node | 327.43914 |
| Argument of peri | 28.67297 |
| Absolute magnitude (H) | 14.2 |
15415 Rika (1998 CA1) is a main-belt asteroid discovered on February 4, 1998 by A. Nakamura at Kuma Kogen.
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