106 Dione
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| Discovery | |
|---|---|
| Discovered by: | James Craig Watson |
| Discovery date: | October 10, 1868 |
| Alternative names: | |
| Minor planet category: | Main belt |
| Orbital characteristics | |
| Epoch December 31, 2006 (JD 2454100.5) | |
| Aphelion distance: | 556.376 Gm (3.719 AU) |
| Perihelion distance: | 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) |
| Avg. 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 characteristics | |
| Dimensions: | 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: | 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.
| Minor planets | ||
|---|---|---|
| Previous minor planet | 106 Dione | Next minor planet |
| List of asteroids | ||
Vulcanoids · Near-Earth asteroids · Main belt · Jupiter Trojans · Centaurs · Damocloids · Comets · Trans-Neptunians (Kuiper belt • Scattered disc • Oort cloud)
For other objects and regions, see Asteroid groups and families, Binary asteroids, Asteroid moons and the Solar System.
For a complete listing, see List of asteroids. See also Pronunciation of asteroid names and Meanings of asteroid names.
