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Discovery and designation
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| Discovered by | C.-I. Lagerkvist |
| Discovery site | European Southern Observatory |
| Discovery date | August 22, 1979 |
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Designations
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| MPC designation | 7217 |
| Named after | Nils Dacke |
| Alternate name(s) | 1979 QX3 |
| Epoch May 14, 2008 | |
| Ap | 3.7587176 |
| Peri | 2.6546592 |
| Eccentricity | 0.1721493 |
| Orbital period | 2097.4111130 |
| Mean anomaly | 12.68072 |
| Inclination | 10.17461 |
| Longitude of ascending node | 325.80308 |
| Argument of peri | 354.64596 |
| Geometric albedo | 0.0511 |
| Absolute magnitude (H) | 11.50 |
7217 Dacke (1979 QX3) is an outer main-belt asteroid discovered on August 22, 1979 by C.-I. Lagerkvist at the European Southern Observatory.
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