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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 | April 21, 1998 |
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Designations
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| MPC designation | 18708 |
| Alternate name(s) | 1998 HT97 |
| Epoch May 14, 2008 | |
| Ap | 3.2233155 |
| Peri | 2.8598247 |
| Eccentricity | 0.0597538 |
| Orbital period | 1937.5154497 |
| Mean anomaly | 15.79691 |
| Inclination | 7.31110 |
| Longitude of ascending node | 19.29771 |
| Argument of peri | 141.12716 |
| Absolute magnitude (H) | 14.2 |
18708 Danielappel (1998 HT97) is a main-belt asteroid discovered on April 21, 1998 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
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