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Discovery and designation
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| Discovered by | E. W. Elst |
| Discovery site | Haute-Provence Observatory |
| Discovery date | December 28, 1989 |
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Designations
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| MPC designation | 19148 |
| Named after | Alaska |
| Alternate name(s) | 1989 YA5 |
| Epoch May 14, 2008 | |
| Ap | 3.5575824 |
| Peri | 2.6940626 |
| Eccentricity | 0.1381268 |
| Orbital period | 2018.5750397 |
| Mean anomaly | 50.66890 |
| Inclination | 19.67555 |
| Longitude of ascending node | 300.42577 |
| Argument of peri | 236.19804 |
| Absolute magnitude (H) | 12.7 |
19148 Alaska (1989 YA5) is a main belt asteroid discovered on December 28, 1989 by E. W. Elst at Haute-Provence Observatory.
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