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Discovery and designation
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| Discovered by | Lincoln Laboratory Near-Earth Asteroid Research Team |
| Discovery site | Socorro |
| Discovery date | April 19, 1998 |
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Designations
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| MPC designation | 22603 |
| Alternate name(s) | 1998 HK133 |
| Epoch May 14, 2008 | |
| Ap | 2.8111213 |
| Peri | 2.5238021 |
| Eccentricity | 0.0538563 |
| Orbital period | 1591.2767622 |
| Mean anomaly | 74.91490 |
| Inclination | 4.57629 |
| Longitude of ascending node | 113.80224 |
| Argument of peri | 117.60731 |
| Absolute magnitude (H) | 14.6 |
22603 Davidoconnor (1998 HK133) is a main-belt asteroid discovered on April 19, 1998 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
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