21631 Stephenhonan
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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 | July 13, 1999 |
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Designations
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| MPC designation | 21631 |
| Alternative names[1] | 1999 NU10 |
| Epoch May 14, 2008 | |
| Ap | 2.7674861 |
| Peri | 2.0580157 |
| Eccentricity | 0.1470252 |
| Orbital period | 1368.8856252 |
| Mean anomaly | 179.08588 |
| Inclination | 4.85531 |
| Longitude of ascending node | 142.08589 |
| Argument of peri | 104.75730 |
| Absolute magnitude | 15.1 |
21631 Stephenhonan (1999 NU10) is a Main-belt Asteroid discovered on July 13, 1999 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
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