21391 Rotanner
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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 | March 20, 1998 |
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Designations
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| MPC designation | 21391 |
| Alternative names[1] | 1998 FY31 |
| Epoch May 14, 2008 | |
| Ap | 2.3733753 |
| Peri | 2.0920491 |
| Eccentricity | 0.0630010 |
| Orbital period | 1218.5617417 |
| Mean anomaly | 1.29514 |
| Inclination | 3.69446 |
| Longitude of ascending node | 194.72728 |
| Argument of peri | 357.24431 |
| Absolute magnitude | 15.8 |
21391 Rotanner (1998 FY31) is a Main-belt Asteroid discovered on March 20, 1998 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
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