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Discovery and designation
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|---|---|
| Discovered by | E. F. Helin |
| Discovery site | Palomar |
| Discovery date | August 19, 1990 |
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Designations
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| MPC designation | 7818 |
| Alternate name(s) | 1990 QO |
| Epoch May 14, 2008 | |
| Ap | 3.1558315 |
| Peri | 1.5257057 |
| Eccentricity | 0.3482031 |
| Orbital period | 1308.0855859 |
| Mean anomaly | 295.85728 |
| Inclination | 21.76576 |
| Longitude of ascending node | 160.64140 |
| Argument of peri | 254.30015 |
| Absolute magnitude (H) | 13.9 |
7818 Muirhead (1990 QO) is a Mars-crossing asteroid discovered on August 19, 1990 by E. F. Helin at Palomar.
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