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Discovery and designation
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| Discovered by | Purple Mountain Observatory |
| Discovery site | Nanking |
| Discovery date | October 28, 1978 |
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Designations
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| MPC designation | 3476 |
| Named after | Dongguan |
| Alternate name(s) | 1978 UF2 |
| Epoch May 14, 2008 | |
| Ap | 3.7768414 |
| Peri | 2.5450002 |
| Eccentricity | 0.1948548 |
| Orbital period | 2052.6686260 |
| Mean anomaly | 65.45196 |
| Inclination | 21.61330 |
| Longitude of ascending node | 43.87922 |
| Argument of peri | 26.66112 |
| Geometric albedo | 0.0309 |
| Absolute magnitude (H) | 11.90 |
3476 Dongguan (1978 UF2) is a main-belt asteroid discovered on October 28, 1978 by Purple Mountain Observatory at Nanking.
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