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Discovery and designation
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| Discovered by | Helin, E. F. |
| Discovery site | Palomar |
| Discovery date | April 7, 1989 |
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Designations
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| MPC designation | 5129 |
| Alternate name(s) | 1989 GN |
| Epoch May 14, 2008 | |
| Ap | 2.5829011 |
| Peri | 2.1779797 |
| Eccentricity | 0.0850518 |
| Orbital period | 1341.4805921 |
| Mean anomaly | 112.21408 |
| Inclination | 10.34981 |
| Longitude of ascending node | 167.57827 |
| Argument of peri | 352.04858 |
| Absolute magnitude (H) | 12.4 |
5129 Groom (1989 GN) is a main-belt asteroid discovered on April 7, 1989 by Eleanor F. Helin at the Palomar Observatory.
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