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Discovery and designation
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| Discovered by | E. W. Elst |
| Discovery site | Haute-Provence Observatory |
| Discovery date | September 16, 1988 |
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Designations
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| MPC designation | 8644 |
| Named after | Betula pendula |
| Alternate name(s) | 1988 SD |
| Epoch May 14, 2008 | |
| Ap | 2.7854735 |
| Peri | 1.9661821 |
| Eccentricity | 0.1724223 |
| Orbital period | 1337.5834304 |
| Mean anomaly | 162.57813 |
| Inclination | 5.30582 |
| Longitude of ascending node | 13.23979 |
| Argument of peri | 296.36507 |
| Absolute magnitude (H) | 13.7 |
8644 Betulapendula (1988 SD) is a main-belt asteroid discovered on September 16, 1988 by E. W. Elst at Haute-Provence Observatory.
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