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Discovery and designation
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| Discovered by | Kushida and Inoue |
| Discovery site | Yatsugatake |
| Discovery date | February 20, 1990 |
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Designations
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| MPC designation | 5403 |
| Named after | Takachiho |
| Alternate name(s) | 1990 DM |
| Epoch May 14, 2008 | |
| Ap | 3.2145529 |
| Peri | 2.8283833 |
| Eccentricity | 0.0639043 |
| Orbital period | 1918.3393831 |
| Mean anomaly | 153.83804 |
| Inclination | 10.32209 |
| Longitude of ascending node | 123.58247 |
| Argument of peri | 46.45675 |
| Absolute magnitude (H) | 11.4 |
5403 Takachiho (1990 DM) is a main-belt asteroid discovered on February 20, 1990 by Kushida and Inoue at Yatsugatake.
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