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Discovery and designation
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| Discovered by | S. J. Bus |
| Discovery site | Siding Spring |
| Discovery date | February 28, 1981 |
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Designations
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| MPC designation | 2780 |
| Named after | Oscar Monnig |
| Alternate name(s) | 1981 DO2 |
| Epoch May 14, 2008 | |
| Ap | 2.4493099 |
| Peri | 1.9380727 |
| Eccentricity | 0.1165244 |
| Orbital period | 1186.7566659 |
| Mean anomaly | 93.26507 |
| Inclination | 5.46281 |
| Longitude of ascending node | 275.07918 |
| Argument of peri | 311.81601 |
| Absolute magnitude (H) | 13.3 |
2780 Monnig (1981 DO2) is a main-belt asteroid discovered on February 28, 1981 by S. J. Bus at Siding Spring.[1] It was named after Oscar Monnig, an American amateur astronomer acknowledged for his contributions to meteoritics.[2]
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