Planet Profile Pluto

Mass (kg)................................................................1.29 x 10^22
Diameter (km).......................................................................2300
Mean density (kg/m^3) ......................................................2030
Escape velocity (m/sec).....................................................1100
Average distance from Sun (AU)....................................39.53
Rotation period (length of day) (in Earth days).............6.39
Revolution period (length of year) (in Earth years)....247.7
Obliquity (tilt of axis) (degrees)........................................122.5
Orbit inclination (degrees)................................................17.15
Orbit eccentricity.................................................................0.248
Mean temperature (K)..............................................................37
Visual geometric albedo...........................................about 0.5

Atmospheric components...............................perhaps methane and nitrogen
Surface materials..................................................................perhaps methane ice