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Discovery and designation
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| Discovered by | P. G. Comba |
| Discovery site | Prescott |
| Discovery date | February 4, 1997 |
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Designations
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| MPC designation | 18555 |
| Named after | Richard Courant |
| Alternate name(s) | 1997 CN4 |
| Epoch May 14, 2008 | |
| Ap | 2.9366116 |
| Peri | 2.7338036 |
| Eccentricity | 0.0357660 |
| Orbital period | 1743.7159022 |
| Mean anomaly | 198.59547 |
| Inclination | 1.24851 |
| Longitude of ascending node | 332.88699 |
| Argument of peri | 101.89323 |
| Absolute magnitude (H) | 14.8 |
18555 Courant (1997 CN4) is a main-belt asteroid discovered on February 4, 1997 by P. G. Comba at Prescott.
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