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Discovery and designation
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| Discovered by | N. Chernykh |
| Discovery site | Nauchnyj |
| Discovery date | September 22, 1979 |
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Designations
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| MPC designation | 3261 |
| Named after | Aleksandr Tvardovsky |
| Alternate name(s) | 1979 SF9 |
| Epoch May 14, 2008 | |
| Ap | 3.1357602 |
| Peri | 2.6762008 |
| Eccentricity | 0.0790713 |
| Orbital period | 1809.4120185 |
| Mean anomaly | 325.14119 |
| Inclination | 2.74987 |
| Longitude of ascending node | 143.03254 |
| Argument of peri | 181.48928 |
| Absolute magnitude (H) | 11.7 |
3261 Tvardovskij (1979 SF9) is a main-belt asteroid discovered on September 22, 1979 by N. Chernykh at Nauchnyj.
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