21047 Hodierna
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Discovery and designation
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| Discovered by | E. W. Elst |
| Discovery site | European Southern Observatory |
| Discovery date | September 22, 1990 |
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Designations
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| MPC designation | 21047 |
| Alternative names[1] | 1990 SE5 |
| Epoch May 14, 2008 | |
| Ap | 4.6913693 |
| Peri | 3.2788645 |
| Eccentricity | 0.1772225 |
| Orbital period | 2905.7620212 |
| Mean anomaly | 93.95653 |
| Inclination | 4.49162 |
| Longitude of ascending node | 52.32556 |
| Argument of peri | 290.48885 |
| Absolute magnitude | 12.9 |
21047 Hodierna (1990 SE5) is a Outer Main-belt Asteroid discovered on September 22, 1990 by E. W. Elst at the European Southern Observatory.
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