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Discovery and designation
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| Discovered by | Tetsuya Fujii and Kazuro Watanabe |
| Discovery site | Kitami Observatory |
| Discovery date | September 16, 1990 |
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Designations
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| MPC designation | 4676 |
| Named after | Seiji Ueda |
| Alternate name(s) | 1990 SD4 |
| Epoch May 14, 2008 | |
| Aphelion | 2.5868404 |
| Perihelion | 2.2177080 |
| Eccentricity | 0.0768298 |
| Orbital period | 1359.9792558 |
| Mean anomaly | 32.45723 |
| Inclination | 8.99046 |
| Longitude of ascending node | 222.28995 |
| Argument of perihelion | 351.80371 |
| Absolute magnitude (H) | 12.6 |
4676 Uedaseiji (1990 SD4) is a main-belt asteroid discovered on September 16, 1990 by Tetsuya Fujii and Kazuro Watanabe at Kitami Observatory.
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