21991 Zane
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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 | December 6, 1999 |
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Designations
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| MPC designation | 21991 |
| Alternative names[1] | 1999 XM23 |
| Epoch May 14, 2008 | |
| Ap | 3.0830489 |
| Peri | 2.5880729 |
| Eccentricity | 0.0872801 |
| Orbital period | 1744.0418082 |
| Mean anomaly | 330.35295 |
| Inclination | 3.13032 |
| Longitude of ascending node | 113.21572 |
| Argument of peri | 237.79993 |
| Absolute magnitude | 14.8 |
21991 Zane (1999 XM23) is a Main-belt Asteroid discovered on December 6, 1999 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
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