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Discovery
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| Discovered by | Cornelis Johannes van Houten, Ingrid van Houten-Groeneveld and Tom Gehrels |
| Discovery site | Palomar Observatory |
| Discovery date | March 25, 1971 |
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Designations
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| MPC designation | 8593 |
| Named after | Marbled Duck |
| Alternate name(s) | 2186 T-1 |
| Epoch May 14, 2008 | |
| Ap | 3.4593509 |
| Peri | 2.7334101 |
| Eccentricity | 0.1172241 |
| Orbital period | 1990.1230195 |
| Mean anomaly | 321.41347 |
| Inclination | 12.62612 |
| Longitude of ascending node | 6.07394 |
| Argument of peri | 141.46504 |
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Physical characteristics
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| Absolute magnitude (H) | 12.5 |
8593 Angustirostris (2186 T-1) is a main-belt asteroid discovered on March 25, 1971 by Cornelis Johannes van Houten, Ingrid van Houten-Groeneveld and Tom Gehrels at Palomar Observatory.
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