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Discovery and designation
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| Discovered by | Kazuro Watanabe and Kin Endate |
| Discovery site | Sapporo |
| Discovery date | May 16, 1990 |
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Designations
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| MPC designation | 4547 |
| Named after | Massachusetts |
| Alternate name(s) | 1990 KP |
| Epoch May 14, 2008 | |
| Ap | 2.7932228 |
| Peri | 2.4359104 |
| Eccentricity | 0.0683311 |
| Orbital period | 1544.1802185 |
| Mean anomaly | 274.39780 |
| Inclination | 17.99918 |
| Longitude of ascending node | 358.40989 |
| Argument of peri | 36.98933 |
| Geometric albedo | 0.1184 |
| Absolute magnitude (H) | 11.00 |
4547 Massachusetts (1990 KP) is a main-belt asteroid discovered on May 16, 1990 by Kazuro Watanabe and Kin Endate at Sapporo.
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