Sponsored by the Institute of Physics   Planets   Mercury   Venus   Earth   Mars   Jupiter   Saturn   Uranus   Neptune   Pluto     Charon Asteroids Comets Constellations Sunrise and Sunset Times Moon Phases SI Units Symbols   Printer Version Astronomy Planets - Pluto - Charon Bulk Parameters Orbital Parameters Bulk Parameters Mass 1.7 × 1021 kg Equatorial Radius 586 km Mean Density 1 800 kg m-3 Surface Gravity 0.21 m s-2 Escape Velocity 0.58 km s-1 Albedo 0.375 Orbital Parameters Mean Distance from Pluto 19 405 km Orbital Inclination 96.56 ° Orbital Eccentricity 0.0 Sidereal Orbit Period 6.387 days   [ H O M E ] [ S C I E N C E ] [ M A T H S ] [ A S T R O N O M Y ] Download | Shop | Contact | About   Page compiled: Wed Sep 05 18:38:01 GMT+01:00 2001