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Discovery and designation
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| Discovered by | Bus, S. J. |
| Discovery site | Siding Spring |
| Discovery date | March 1, 1981 |
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Designations
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| MPC designation | 4020 |
| Alternate name(s) | 1981 ET38 |
| Epoch May 14, 2008 | |
| Ap | 3.2193384 |
| Peri | 2.3335270 |
| Eccentricity | 0.1595233 |
| Orbital period | 1689.7759963 |
| Mean anomaly | 117.92433 |
| Inclination | 9.56252 |
| Longitude of ascending node | 194.97995 |
| Argument of peri | 178.60918 |
| Absolute magnitude (H) | 13.0 |
4020 Dominique (1981 ET38) is a main-belt asteroid discovered on March 1, 1981 by Bus, S. J. at Siding Spring.
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