21856 Heathermaria
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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 | October 7, 1999 |
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Designations
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| MPC designation | 21856 |
| Alternative names[1] | 1999 TR150 |
| Epoch May 14, 2008 | |
| Ap | 2.5646461 |
| Peri | 1.8600657 |
| Eccentricity | 0.1592376 |
| Orbital period | 1201.9348346 |
| Mean anomaly | 312.57161 |
| Inclination | 5.44691 |
| Longitude of ascending node | 250.48892 |
| Argument of peri | 20.59182 |
| Absolute magnitude | 15.6 |
21856 Heathermaria (1999 TR150) is a Main-belt Asteroid discovered on October 7, 1999 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
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