Sponsored by the Institute of Physics   Planets   Mercury   Venus   Earth   Mars     Phobos     Deimos   Jupiter   Saturn   Uranus   Neptune   Pluto Asteroids Comets Constellations Sunrise and Sunset Times Moon Phases SI Units Symbols   Printer Version Astronomy Planets - Mars - Deimos Bulk Parameters Orbital Parameters Bulk Parameters Mass 1.8 × 1015 kg Major Axis Radius 8 km Minor Axis Radius 5 km Mean Density 1 750 kg m-3 Geometric Albedo 0.07 Visual Magnitude +12.89 Orbital Parameters Mean Distance from Mars 23 436 km Sidereal Orbit Period 1.262 44 days Orbital Inclination 1.79 ° Orbital Eccentricity 0.000 33   [ 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