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Discovery and designation
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| Discovered by | Tsutomu Seki |
| Discovery site | Geisei |
| Discovery date | January 5, 1989 |
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Designations
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| MPC designation | 4498 |
| Alternate name(s) | 1989 AG1 |
| Epoch May 14, 2008 | |
| Ap | 3.3611469 |
| Peri | 2.6386919 |
| Eccentricity | 0.1204124 |
| Orbital period | 1897.8540174 |
| Mean anomaly | 16.12218 |
| Inclination | 8.90264 |
| Longitude of ascending node | 281.03176 |
| Argument of peri | 70.87278 |
| Absolute magnitude (H) | 11.1 |
4498 Shinkoyama (1989 AG1) is a main-belt asteroid discovered on January 5, 1989 by Tsutomu Seki at Geisei.
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