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Discovery and designation
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| Discovered by | B. L. Stevens |
| Discovery site | Desert Moon Observatory |
| Discovery date | January 6, 2002 |
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Designations
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| MPC designation | 111558 |
| Alternate name(s) | 2002 AZ |
| Epoch May 14, 2008 | |
| Ap | 3.3074460 |
| Peri | 2.9515632 |
| Eccentricity | 0.0568593 |
| Orbital period | 2022.1428007 |
| Mean anomaly | 63.55606 |
| Inclination | 11.40211 |
| Longitude of ascending node | 107.54692 |
| Argument of peri | 1.75761 |
| Absolute magnitude (H) | 15.0 |
111558 Barrett (2002 AZ) is a main-belt asteroid discovered on January 6, 2002 by B. L. Stevens at Desert Moon Observatory.
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