Pluto

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Dwarf Planet

Good's Furniture
Rt. 78 & 34
Kewanee, Illinois 

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
(Information from the California Institute of Technology)

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