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Discovery and designation
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| Discovered by | L. V. Zhuravleva |
| Discovery site | Crimean Astrophysical Observatory |
| Discovery date | September 15, 1990 |
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Designations
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| MPC designation | 30821 |
| Alternate name(s) | 1990 RR17 |
| Epoch May 14, 2008 | |
| Ap | 2.7844035 |
| Peri | 1.8428373 |
| Eccentricity | 0.2034833 |
| Orbital period | 1285.3949110 |
| Mean anomaly | 35.88094 |
| Inclination | 4.27248 |
| Longitude of ascending node | 270.23333 |
| Argument of peri | 53.57294 |
| Absolute magnitude (H) | 14.2 |
30821 Chernetenko (1990 RR17) is a main-belt asteroid discovered on September 15, 1990 by L. V. Zhuravleva at the Crimean Astrophysical Observatory.
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