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Discovery and designation
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| Discovered by | T. Seki |
| Discovery site | Geisei |
| Discovery date | March 5, 1989 |
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Designations
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| MPC designation | 4639 |
| Named after | Minox |
| Alternate name(s) | 1989 EK2 |
| Epoch May 14, 2008 | |
| Ap | 3.0199734 |
| Peri | 2.0962028 |
| Eccentricity | 0.1805588 |
| Orbital period | 1494.4165484 |
| Mean anomaly | 169.24457 |
| Inclination | 7.92243 |
| Longitude of ascending node | 33.37066 |
| Argument of peri | 250.86193 |
| Absolute magnitude (H) | 13.1 |
4639 Minox (1989 EK2) is a main-belt asteroid discovered on March 5, 1989 by T. Seki at Geisei.
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