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Discovery and designation
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| Discovered by | Cornelis Johannes van Houten, Ingrid van Houten-Groeneveld and Tom Gehrels |
| Discovery site | Palomar Observatory |
| Discovery date | September 24, 1960 |
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Designations
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| MPC designation | 3218 |
| Alternate name(s) | 6611 P-L |
| Epoch May 14, 2008 | |
| Ap | 3.0665786 |
| Peri | 1.9735666 |
| Eccentricity | 0.2168612 |
| Orbital period | 1461.2280786 |
| Mean anomaly | 278.13685 |
| Inclination | 2.70128 |
| Longitude of ascending node | 183.15332 |
| Argument of peri | 242.27882 |
| Absolute magnitude (H) | 14.0 |
3218 Delphine (6611 P-L) is a main-belt asteroid discovered on September 24, 1960 by Cornelis Johannes van Houten, Ingrid van Houten-Groeneveld and Tom Gehrels at Palomar Observatory.
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