21148 Billramsey
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Discovery and designation
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| Discovered by | C. S. Shoemaker and E. M. Shoemaker |
| Discovery site | Palomar |
| Discovery date | April 16, 1993 |
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Designations
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| MPC designation | 21148 |
| Alternative names[1] | 1993 HN1 |
| Epoch May 14, 2008 | |
| Ap | 3.1908172 |
| Peri | 2.1851260 |
| Eccentricity | 0.1870725 |
| Orbital period | 1609.6647851 |
| Mean anomaly | 154.89436 |
| Inclination | 12.86499 |
| Longitude of ascending node | 159.70371 |
| Argument of peri | 36.52651 |
| Absolute magnitude | 14.1 |
21148 Billramsey (1993 HN1) is a Main-belt Asteroid discovered on April 16, 1993 by C. S. Shoemaker and E. M. Shoemaker at Palomar.
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