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Discovery and designation
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| Discovered by | Tsutomu Seki |
| Discovery site | Geisei Observatory |
| Discovery date | November 18, 1987 |
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Designations
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| MPC designation | 4097 |
| Named after | Mount Tsurugi |
| Alternate name(s) | 1987 WW |
| Epoch May 14, 2008 | |
| Ap | 2.5569843 |
| Peri | 1.9216871 |
| Eccentricity | 0.1418495 |
| Orbital period | 1223.9881689 |
| Mean anomaly | 100.02512 |
| Inclination | 3.97171 |
| Longitude of ascending node | 20.08202 |
| Argument of peri | 322.08200 |
| Absolute magnitude (H) | 13.4 |
4097 Tsurugisan (1987 WW) is a main-belt asteroid discovered on November 18, 1987 by Tsutomu Seki at Geisei Observatory.
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