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Discovery and designation
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| Discovered by | M. Tombelli and G. Forti |
| Discovery site | Montelupo |
| Discovery date | February 28, 1997 |
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Designations
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| MPC designation | 20200 |
| Alternate name(s) | 1997 DW |
| Epoch May 14, 2008 | |
| Ap | 3.0791387 |
| Peri | 2.4533823 |
| Eccentricity | 0.1131051 |
| Orbital period | 1680.4981781 |
| Mean anomaly | 80.64099 |
| Inclination | 8.29124 |
| Longitude of ascending node | 337.85841 |
| Argument of peri | 265.95172 |
| Absolute magnitude (H) | 14.4 |
20200 Donbacky (1997 DW) is a main-belt asteroid discovered on February 28, 1997 by M. Tombelli and G. Forti at Montelupo.
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