- 106 Dione
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106 Dione DiscoveryDiscovered by James Craig Watson Discovery date October 10, 1868 DesignationsNamed after Dione Alternate name(s) Minor planet
categoryMain belt Epoch December 31, 2006 (JD 2454100.5) Aphelion 556.376 Gm (3.719 AU) Perihelion 391.585 Gm (2.618 AU) Semi-major axis 473.981 Gm (3.168 AU) Eccentricity 0.174 Orbital period 2059.923 d (5.64 a) Average orbital speed 16.61 km/s Mean anomaly 161.899° Inclination 4.616° Longitude of ascending node 62.400° Argument of perihelion 329.534° Physical characteristicsDimensions 146.6 km Mass 3.3×1018 kg Mean density ? g/cm³ Equatorial surface gravity 0.0410 m/s² Escape velocity 0.0775 km/s Rotation period ? d Albedo ? Temperature ~156 K Spectral type G Absolute magnitude (H) 7.41 106 Dione is a large main-belt asteroid. It probably has a composition similar to 1 Ceres. It was discovered by J. C. Watson on October 10, 1868, and named after Dione, a Titan in Greek mythology. Dione occulted a dim star on January 19, 1983. A diameter of 147 km was observed, closely matching the value acquired by the IRAS satellite.
One of Saturn's satellites is also named Dione.
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Categories:- Main Belt asteroids
- G-type asteroids
- Asteroids named from Greek mythology
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- C-type Main Belt asteroid stubs
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