21648 Gravanschaik
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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 |
Designations
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MPC designation | 21648 |
Alternative names[1] | 1999 NB57 |
Epoch May 14, 2008 | |
Ap | 3.1990659 |
Peri | 1.9989547 |
Eccentricity | 0.2308785 |
Orbital period | 1530.4193158 |
Mean anomaly | 315.72655 |
Inclination | 11.54302 |
Longitude of ascending node | 260.94686 |
Argument of peri | 177.95894 |
Absolute magnitude | 14.4 |
21648 Gravanschaik (1999 NB57) is a Main-belt Asteroid discovered on July 12, 1999 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.