21626 Matthewhall
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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 12, 1999 |
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Designations
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| MPC designation | 21626 |
| Alternative names[1] | 1999 NP2 |
| Epoch May 14, 2008 | |
| Ap | 2.6614401 |
| Peri | 1.8454161 |
| Eccentricity | 0.1810628 |
| Orbital period | 1235.5603749 |
| Mean anomaly | 215.96754 |
| Inclination | 5.23563 |
| Longitude of ascending node | 200.37963 |
| Argument of peri | 124.53697 |
| Absolute magnitude | 15.1 |
21626 Matthewhall (1999 NP2) is a Main-belt Asteroid discovered on July 12, 1999 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
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