Sponsored by the Institute of Physics   Planets   Mercury   Venus   Earth     Moon   Mars   Jupiter   Saturn   Uranus   Neptune   Pluto Asteroids Comets Constellations Sunrise and Sunset Times Moon Phases SI Units Symbols   Printer Version Astronomy Planets - Earth - Moon Bulk Parameters Orbital Parameters Bulk Parameters Mass 0.073 49 × 1024 kg Volume 2.197 3 × 1010 km3 Equatorial Radius 1738 km Polar Radius 1735 km Volumetric Mean Radius 1737.5 Ellipticity 0.002 Mean Density 3340 kg m-3 Surface Gravity 1.62 m s-2 Escape Velocity 2.38 km s-1 GM 0.004 9 × 106 km3 s-2 Bond Albedo 0.067 Visual Geometric Albedo 0.12 Visual Magnitude (V1,0) +0.21 Solar Irradiance 1380 W m-2 Black-Body Temperature 274.5 K Moment of Inertia 0.394 I MR-2 Topographic Range 16 km Orbital Parameters Semimajor Axis 0.3844 × 106 km Perigee 0.3633 × 106 km Apogee 0.4055 × 106 km Revolution Period 27.322 days Synodic Period 29.53 days Mean Orbital Velocity 1.023 km s-1 Orbital Inclination 5.145 ° Orbital Eccentricity 0.054 9 Sidereal Rotation Period 655.728 hours Equatorial Inclination 6.68 ° Recession Rate from Earth 3.8 cm yr-1   [ 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 18:37:58 GMT+01:00 2001