5142 Okutama
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| Discovery and designation | |
|---|---|
| Discovered by | Hioki and Hayakawa |
| Discovery site | Okutama |
| Discovery date | December 18, 1990 |
| Designations | |
| MPC designation | 5142 |
| Alternative names | 1990 YD |
| Orbital characteristics | |
| Epoch May 14, 2008 | |
| Aphelion | 3.2365308 |
| Perihelion | 1.8417440 |
| Eccentricity | 0.2746576 |
| Orbital period | 1477.8411270 |
| Mean anomaly | 132.96684 |
| Inclination | 6.27359 |
| Longitude of ascending node | 205.45623 |
| Argument of perihelion | 192.57927 |
| Physical characteristics | |
| Absolute magnitude (H) | 11.8 |
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5142 Okutama (1990 YD) is a main-belt asteroid discovered on December 18, 1990 by Hioki and Hayakawa at Okutama.
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