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Discovery and designation
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| Discovered by | E. F. Helin |
| Discovery site | Palomar |
| Discovery date | September 24, 1992 |
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Designations
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| MPC designation | 16589 |
| Alternate name(s) | 1992 SL1 |
| Epoch May 14, 2008 | |
| Ap | 2.0850956 |
| Peri | 1.7829422 |
| Eccentricity | 0.0781154 |
| Orbital period | 982.4026042 |
| Mean anomaly | 290.77716 |
| Inclination | 20.01679 |
| Longitude of ascending node | 4.65009 |
| Argument of peri | 19.51715 |
| Absolute magnitude (H) | 14.5 |
16589 Hastrup (1992 SL1) is an inner main-belt asteroid discovered on September 24, 1992 by E. F. Helin at Palomar.
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