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Discovery and designation
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| Discovered by | Henri Debehogne |
| Discovery site | La Silla |
| Discovery date | September 8, 1985 |
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Designations
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| MPC designation | 4571 |
| Named after | Arthur Grumiaux |
| Alternate name(s) | 1985 RY3 |
| Epoch May 14, 2008 | |
| Ap | 3.7041781 |
| Peri | 2.6256707 |
| Eccentricity | 0.1703844 |
| Orbital period | 2056.5697205 |
| Mean anomaly | 27.93530 |
| Inclination | 1.49535 |
| Longitude of ascending node | 167.06497 |
| Argument of peri | 172.32917 |
| Absolute magnitude (H) | 12.0 |
4571 Grumiaux (1985 RY3) is a main-belt asteroid discovered on September 8, 1985 by Henri Debehogne at La Silla.
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