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Discovery and designation
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| Discovered by | Schelte J. Bus |
| Discovery site | Palomar |
| Discovery date | April 24, 1977 |
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Designations
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| MPC designation | 4550 |
| Alternate name(s) | 1977 HH1 |
| Epoch May 14, 2008 | |
| Ap | 3.7783579 |
| Peri | 2.4713807 |
| Eccentricity | 0.2091251 |
| Orbital period | 2017.6517627 |
| Mean anomaly | 138.99630 |
| Inclination | 0.25495 |
| Longitude of ascending node | 18.51495 |
| Argument of peri | 310.23116 |
| Absolute magnitude (H) | 12.8 |
4550 Royclarke (1977 HH1) is a main-belt asteroid discovered on April 24, 1977 by Schelte J. Bus at Palomar.
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