Dione
106 Dione (A868 TA)
📋 A written introduction is coming — for now this page shows official values only.
Physical data
- Diameter
- 207.869 km
- Rotation period
- 16.21 hours
- Albedo
- 0.044
- Absolute magnitude H
- 7.76 mag
- Spectral type (Tholen)
- G
- Spectral type (SMASS)
- Cgh
Orbit
- Orbit class (JPL)
- MBA — Main-belt Asteroid
- Semi-major axis
- 3.18 AU
- Eccentricity
- 0.159
- Inclination
- 4.57°
- Perihelion distance
- 2.68 AU
- Aphelion distance
- 3.69 AU
- Orbital period
- 2,070 days
- Perihelion passage
- JD 2461461.873
- Earth MOID
- 1.68 AU
Earth approach
- Potentially hazardous (PHA)
- No
- Near-Earth object (NEO)
- No
In everyday life
- About 208 km across — 52% of the 400 km Seoul–Busan expressway.
- One orbit takes about 2,070 Earth days (about 5.7 years).
- Sunlight needs about 26 minutes to reach it on average (semi-major axis 3.2 AU) — versus about 8 min 19 s to Earth.
Worked out from this object's official values.