21770 Wangyiran
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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 8, 1999 |
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Designations
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| MPC designation | 21770 |
| Alternative names[1] | 1999 RF211 |
| Epoch May 14, 2008 | |
| Ap | 2.4671985 |
| Peri | 2.2361991 |
| Eccentricity | 0.0491133 |
| Orbital period | 1317.2583901 |
| Mean anomaly | 149.22754 |
| Inclination | 5.07145 |
| Longitude of ascending node | 293.80544 |
| Argument of peri | 72.19081 |
| Absolute magnitude | 14.7 |
21770 Wangyiran (1999 RF211) is a Main-belt Asteroid discovered on September 8, 1999 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
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