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Discovery and designation
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| Discovered by | E. F. Helin |
| Discovery site | Palomar |
| Discovery date | September 23, 1990 |
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Designations
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| MPC designation | 10315 |
| Named after | David Brewster |
| Alternate name(s) | 1990 SC4 |
| Epoch May 14, 2008 | |
| Ap | 3.0522007 |
| Peri | 1.7155439 |
| Eccentricity | 0.2803541 |
| Orbital period | 1344.3827153 |
| Mean anomaly | 238.70993 |
| Inclination | 21.99773 |
| Longitude of ascending node | 190.25957 |
| Argument of peri | 245.86018 |
| Absolute magnitude (H) | 14.3 |
10315 Brewster (1990 SC4) is a main-belt asteroid discovered on September 23, 1990 by E. F. Helin at Palomar.
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