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Discovery and designation
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| Discovered by | François Dossin |
| Discovery site | Haute-Provence Observatory |
| Discovery date | December 30, 1981 |
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Designations
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| MPC designation | 3198 |
| Named after | Wallonia |
| Alternate name(s) | 1981 YH1 |
| Epoch May 14, 2008 | |
| Ap | 2.7005051 |
| Peri | 1.6597903 |
| Eccentricity | 0.2386799 |
| Orbital period | 1175.7832929 |
| Mean anomaly | 52.93008 |
| Inclination | 17.98083 |
| Longitude of ascending node | 83.71415 |
| Argument of peri | 40.09988 |
| Absolute magnitude (H) | 12.3 |
3198 Wallonia (1981 YH1) is a Mars-crossing asteroid discovered on December 30, 1981 by François Dossin at Haute-Provence Observatory.
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