134 Sophrosyne
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| Discovery | |
|---|---|
| Discovered by: | Karl Theodor Robert Luther |
| Discovery date: | September 27, 1873 |
| Alternative names: | |
| Minor planet category: | Main belt |
| Orbital characteristics | |
| Epoch December 31, 2006 (JD 2454100.5) | |
| Aphelion distance: | 428.174 Gm (2.862 AU) |
| Perihelion distance: | 338.780 Gm (2.265 AU) |
| Semi-major axis: | 383.477 Gm (2.563 AU) |
| Eccentricity: | 0.117 |
| Orbital period: | 1499.059 d (4.10 a) |
| Avg. orbital speed: | 18.54 km/s |
| Mean anomaly: | 110.425° |
| Inclination: | 11.588° |
| Longitude of ascending node: | 346.213° |
| Argument of perihelion: | 83.723° |
| Physical characteristics | |
| Dimensions: | 123.3 km |
| Mass: | 2.0×1018 kg |
| Mean density: | ? g/cm³ |
| Equatorial surface gravity: | 0.0345 m/s² |
| Escape velocity: | 0.0652 km/s |
| Rotation period: | ? d |
| Albedo: | ? |
| Temperature: | ~174 K |
| Spectral type: | C |
| Absolute magnitude: | 8.76 |
134 Sophrosyne is a large main belt asteroid. It has an exceedingly dark surface and most likely a primitive carbonaceous composition. It was discovered by Robert Luther on September 27, 1873, and is named after the concept of sophrosyne, Plato's term for 'moderation'.
| Minor planets | ||
|---|---|---|
| Previous minor planet | 134 Sophrosyne | 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.
