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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 10, 1999 |
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Designations
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| MPC designation | 18785 |
| Alternate name(s) | 1999 JV48 |
| Epoch May 14, 2008 | |
| Ap | 2.6092097 |
| Peri | 1.9333445 |
| Eccentricity | 0.1487853 |
| Orbital period | 1250.2694157 |
| Mean anomaly | 87.96341 |
| Inclination | 4.06371 |
| Longitude of ascending node | 240.11738 |
| Argument of peri | 142.19848 |
| Absolute magnitude (H) | 14.2 |
18785 Betsywelsh (1999 JV48) is a main-belt asteroid discovered on May 10, 1999 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
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