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Discovery and designation
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| Discovered by | K. Endate and K. Watanabe |
| Discovery site | Kitami |
| Discovery date | October 15, 1990 |
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Designations
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| MPC designation | 8274 |
| Alternate name(s) | 1990 TJ1 |
| Epoch May 14, 2008 | |
| Ap | 2.7306828 |
| Peri | 1.8176262 |
| Eccentricity | 0.2007464 |
| Orbital period | 1252.6460408 |
| Mean anomaly | 43.83797 |
| Inclination | 3.72874 |
| Longitude of ascending node | 76.80359 |
| Argument of peri | 314.66324 |
| Absolute magnitude (H) | 14.5 |
8274 Soejima (1990 TJ1) is a main-belt asteroid discovered on October 15, 1990 by K. Endate and K. Watanabe at Kitami.
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