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Discovery and designation
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| Discovered by | Kosai and Hurukawa |
| Discovery site | Kiso Observatory |
| Discovery date | January 26, 1982 |
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Designations
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| MPC designation | 6031 |
| Named after | Ryōkan |
| Alternate name(s) | 1982 BQ4 |
| Epoch May 14, 2008 | |
| Ap | 3.0895987 |
| Peri | 2.9425165 |
| Eccentricity | 0.0243832 |
| Orbital period | 1913.1890470 |
| Mean anomaly | 283.72711 |
| Inclination | 10.86657 |
| Longitude of ascending node | 84.50117 |
| Argument of peri | 129.10914 |
| Absolute magnitude (H) | 11.6 |
6031 Ryokan (1982 BQ4) is a main-belt asteroid discovered on January 26, 1982 by Kosai and Hurukawa at Kiso Observatory.
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