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Discovery and designation
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| Discovered by | OCA-DLR Asteroid Survey |
| Discovery site | Caussols |
| Discovery date | December 6, 1997 |
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Designations
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| MPC designation | 20230 |
| Alternate name(s) | 1997 XH5 |
| Epoch May 14, 2008 | |
| Ap | 2.5001396 |
| Peri | 2.1235220 |
| Eccentricity | 0.0814544 |
| Orbital period | 1283.9037979 |
| Mean anomaly | 355.71510 |
| Inclination | 3.56082 |
| Longitude of ascending node | 345.88733 |
| Argument of peri | 140.73358 |
| Absolute magnitude (H) | 16.4 |
20230 Blanchard (1997 XH5) is a main-belt asteroid discovered on December 6, 1997 by the OCA-DLR Asteroid Survey at Caussols.
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