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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 | 18704 |
| Alternate name(s) | 1998 HF87 |
| Epoch May 14, 2008 | |
| Ap | 3.1596424 |
| Peri | 2.9607932 |
| Eccentricity | 0.0324894 |
| Orbital period | 1955.3609561 |
| Mean anomaly | 153.55769 |
| Inclination | 6.01597 |
| Longitude of ascending node | 237.41498 |
| Argument of peri | 140.93731 |
| Absolute magnitude (H) | 14.1 |
18704 Brychristian (1998 HF87) 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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