The "
moon" of
Pluto.
Mass: 1.29 x 10^22 kg
Diameter: 2300km
Mean density: 2030kg/m^3
Escape velocity: 1100 m/sec
Average distance from Sun: 39.53 AU
Rotation period (length of day in Earth days): 6.39
Revolution period (length of year in Earth years): 247.7
Obliquity (tilt of axis): 122.5º
Orbit inclination: 17.15º
Orbit eccentricity (deviation from circular): 0.248º
Mean temperature: 37º K
Visual geometric albedo (reflectivity): ~.5
Atmospheric components: maybe methane and nitrogen
Surface materials: rock, perhaps methane ice