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Discovery and designation
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| Discovered by | Lincoln Laboratory Near-Earth Asteroid Research Team |
| Discovery site | Socorro |
| Discovery date | September 9, 1999 |
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Designations
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| MPC designation | 22847 |
| Alternate name(s) | 1999 RO121 |
| Epoch May 14, 2008 | |
| Ap | 2.8050415 |
| Peri | 2.2272053 |
| Eccentricity | 0.1148267 |
| Orbital period | 1457.7945989 |
| Mean anomaly | 358.39510 |
| Inclination | 2.32715 |
| Longitude of ascending node | 34.31152 |
| Argument of peri | 24.93079 |
| Absolute magnitude (H) | 15.5 |
22847 Utley (1999 RO121) is a main-belt asteroid discovered on September 9, 1999 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
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