Properties of the planets of the solar system

last updated 5 February 2004

planetequatorial radiusmassaverage densitysurface gravityescape velocitysidereal period of rotationinclination of equator to orbit
kmEarth=1Earth=1g/cm3Earth=1km/s
Mercury24400.3830.05535.4270.3784.458d 15h 31m0°05'
Venus60520.9490.81505.2040.90710.4243d 00h 27m177°18'
Earth63781.0001.00005.5151.00011.223h 56m 04.1s23°26'
Mars33940.5320.10743.9340.3775.024h 37m 22.7s25°11'
Jupiter7139811.194317.82841.3262.36459.59h 55m 27s3°07'
Saturn603309.45995.16090.6871.06435.510h 39m 22s26°44'
Uranus262004.10814.53571.3180.88921.317h 14m97°52'
Neptune252253.95517.14781.6381.12523.516h 07m29°34'
Pluto11750.1830.00211.860.0671.36d 09h 17m122°

planetsemimajor axisorbital periodaverage orbital velocityorbital eccentricityorbital inclination
AU106 kmyrdayskm/s
Mercury0.387157.90.2408487.96847.870.20567°00'18"
Venus0.7233108.20.61519224.70235.020.00683°23'40"
Earth1.0000149.61.00000365.25629.790.01670°00'00"
Mars1.5237227.91.88081686.97824.120.09341°50'59"
Jupiter5.2028778.311.86164332.5313.060.04851°18'12"
Saturn9.54281427.629.460910760.789.650.05552°29'20"
Uranus19.19212871.184.024130690.346.800.04630°46'24"
Neptune30.06894498.2164.773460184.55.440.0091°46'12"
Pluto39.48175906.4247.92905544.740.248817°08'30"

© 2001-2003, 2004 by Wm. Robert Johnston.
Last modified 5 February 2004.
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