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Discovery and designation
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| Discovered by | Purple Mountain Observatory |
| Discovery site | Nanking |
| Discovery date | December 3, 1981 |
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Designations
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| MPC designation | 3463 |
| Named after | Charles K. Kao |
| Alternate name(s) | 1981 XJ2 |
| Epoch May 14, 2008 | |
| Ap | 2.7766526 |
| Peri | 2.1154808 |
| Eccentricity | 0.1351500 |
| Orbital period | 1397.3360874 |
| Mean anomaly | 309.10458 |
| Inclination | 3.02701 |
| Longitude of ascending node | 50.89287 |
| Argument of peri | 49.29328 |
| Absolute magnitude (H) | 13.2 |
3463 Kaokuen (1981 XJ2) is a main-belt asteroid discovered on December 3, 1981 by Purple Mountain Observatory at Nanking.
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