5142 Okutama
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Discovery and designation
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| Discovered by | Hioki and Hayakawa |
| Discovery site | Okutama |
| Discovery date | December 18, 1990 |
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Designations
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| MPC designation | 5142 |
| Alternative names[1] | 1990 YD |
| Epoch May 14, 2008 | |
| Ap | 3.2365308 |
| Peri | 1.8417440 |
| Eccentricity | 0.2746576 |
| Orbital period | 1477.8411270 |
| Mean anomaly | 132.96684 |
| Inclination | 6.27359 |
| Longitude of ascending node | 205.45623 |
| Argument of peri | 192.57927 |
| Absolute magnitude | 11.8 |
5142 Okutama (1990 YD) is a Main-belt Asteroid discovered on December 18, 1990 by Hioki and Hayakawa at Okutama.
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