21621 Sherman
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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 | May 20, 1999 |
Designations
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MPC designation | 21621 |
Alternative names[1] | 1999 KR4 |
Epoch May 14, 2008 | |
Ap | 3.0177482 |
Peri | 1.7734850 |
Eccentricity | 0.2596958 |
Orbital period | 1354.3297074 |
Mean anomaly | 131.26305 |
Inclination | 8.69722 |
Longitude of ascending node | 209.45792 |
Argument of peri | 114.63589 |
Absolute magnitude | 14.5 |
21621 Sherman (1999 KR4) is a Main-belt Asteroid discovered on May 20, 1999 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.