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Discovery and designation
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| Discovered by | E. W. Elst |
| Discovery site | La Silla |
| Discovery date | February 2, 1987 |
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Designations
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| MPC designation | 4999 |
| Alternate name(s) | 1987 CJ |
| Epoch May 14, 2008 | |
| Ap | 3.1516762 |
| Peri | 2.8733640 |
| Eccentricity | 0.0461926 |
| Orbital period | 1909.8240500 |
| Mean anomaly | 45.91041 |
| Inclination | 10.49825 |
| Longitude of ascending node | 156.15627 |
| Argument of peri | 338.41039 |
| Absolute magnitude (H) | 12.0 |
4999 MPC (1987 CJ) is a main-belt asteroid discovered on February 2, 1987 by E. W. Elst at La Silla.
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