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Discovery and designation
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| Discovered by | H.-E. Schuster |
| Discovery site | European Southern Observatory |
| Discovery date | September 5, 1977 |
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Designations
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| MPC designation | 73640 |
| Named after | Ludwig Biermann |
| Alternate name(s) | 1977 RM |
| Epoch May 14, 2008 | |
| Ap | 2.8040534 |
| Peri | 2.4062406 |
| Eccentricity | 0.0763513 |
| Orbital period | 1535.8428607 |
| Mean anomaly | 79.45837 |
| Inclination | 23.53365 |
| Longitude of ascending node | 96.45493 |
| Argument of peri | 284.10641 |
| Absolute magnitude (H) | 14.2 |
73640 Biermann (1977 RM) is a main-belt asteroid discovered on September 5, 1977 by H.-E. Schuster at the European Southern Observatory.
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