Pluto and satellite Charon, ground-based

distance from Sun = 39.44 AU

rotation period = 6.38days

orbital period = 247.7 yr

orbital eccentricity = .25

orbital inclination = 17.2o

axis inclination = 122.46o

mass/me = .002

radius/re = .18

albedo = .50

gravity/ge = .05

known satellites = 2

atmosphere: N, CH4