4557 Mika
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Discovery and designation
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| Discovered by | Yanai and Kazuro Watanabe |
| Discovery site | Kitami |
| Discovery date | December 14, 1987 |
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Designations
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| MPC designation | 4557 |
| Alternative names[1] | 1987 XD |
| Epoch May 14, 2008 | |
| Ap | 3.1723201 |
| Peri | 2.8730149 |
| Eccentricity | 0.0495101 |
| Orbital period | 1919.4816888 |
| Mean anomaly | 245.01850 |
| Inclination | 11.28964 |
| Longitude of ascending node | 113.14564 |
| Argument of peri | 40.44015 |
| Absolute magnitude | 11.7 |
4557 Mika (1987 XD) is a Main-belt Asteroid discovered on December 14, 1987 by Yanai and Kazuro Watanabe at Kitami.
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