| Minor Planet Designation | 3361 Orpheus | | Asteroid Group | Apollo group | | Asteroid Family | Not applicable | | Composition Class | Q-type (sometimes classed as V-type) | | Orbital Period | 1.33 years | | Distance from the Sun | Semi-Major Axis: 181,079,000 km (1.21 AU)
Perihelion: 122,601,000 km (0.82 AU)
Aphelion: 239,557,000 km (1.60 AU)
| | Eccentricity | 0.3228 | | Diameter (Mean) | 300 m | | Notes | As a member of the Apollo Group, Orpheus' orbit carries it through the inner Solar System, intersecting the orbits of Venus, Earth and Mars. In 2013 it passed within some 15 million kilometres of Earth, and its nearest theoretical approach is closer still: just over two million kilometres. |
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