Enceladus

Sixth-largest moon by size of Saturn, planet in Sol System. Fourteenth satellite when ordered by distance from Saturn. Orbits within the densest part of the E Ring, the outermost of Saturn's rings.

Density of 1.61 g/cm³

Diameter of 513.2 × 502.8 × 496.6 km

Mass of 1.08022±0.00101)×1020 kg (1.8×10−5 Terra's)

Surface gravity of 0.114 m/s² (0.0113 g)

Surface temperature of 32.9K to 145K (-240.25C to -128.15C)

Atmosphere of 91% water vapor, 4% nitrogen, 3.2% carbon dioxide, and 1.7% methane.