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Discovery and designation
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| Discovered by | Purple Mountain Observatory |
| Discovery site | Nanking |
| Discovery date | January 12, 1975 |
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Designations
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| MPC designation | 2078 |
| Named after | Nanjing |
| Alternate name(s) | 1975 AD |
| Epoch May 14, 2008 | |
| Ap | 3.2543493 |
| Peri | 1.4846159 |
| Eccentricity | 0.3734430 |
| Orbital period | 1332.2285212 |
| Mean anomaly | 87.04943 |
| Inclination | 20.17453 |
| Longitude of ascending node | 287.18074 |
| Argument of peri | 99.29867 |
| Absolute magnitude (H) | 12.1 |
2078 Nanking (1975 AD) is a Mars-crossing asteroid discovered on January 12, 1975 by Purple Mountain Observatory at Nanking.
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