20641 Yenuanchen
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Discovery and designation
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| Discovered by | Lincoln Laboratory Near-Earth Asteroid Research Team |
| Discovery site | Socorro |
| Discovery date | October 4, 1999 |
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Designations
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| MPC designation | 20641 |
| Alternative names[1] | 1999 TF121 |
| Epoch May 14, 2008 | |
| Ap | 3.3531577 |
| Peri | 2.6924261 |
| Eccentricity | 0.1092916 |
| Orbital period | 1919.6003136 |
| Mean anomaly | 253.96560 |
| Inclination | 2.85580 |
| Longitude of ascending node | 135.73430 |
| Argument of peri | 208.23274 |
| Absolute magnitude | 14.3 |
20641 Yenuanchen (1999 TF121) is a Main-belt Asteroid discovered on October 4, 1999 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
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