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Homeschool Fast Facts
The Major Planets of Our Solar System
Pluto Neptune Uranus Saturn Jupiter Mars Earth Venus Mercury Sun Solar System
Solar System
  
Planetary Facts
(click a Planet for additional information)
Red indicates largest value - Gold indicates smallest value
  Mercury Venus Earth Moon Mars Jupiter Saturn Uranus Neptune Pluto
Mass (1021tons) 0.364 5.37 6.58 0.081 0.708 2,093 627 95.7 113 0.0138
Diameter (miles) 3,032 7,521 7,926 2,159 4,222 88,846 74,897 31,763 30,775 1,485
Density (lbs/ft3) 339 327 344 209 246 83 43 79 102 110
Gravity (ft/s2) 12.1 29.1 32.1 5.3 12.1 75.9 29.4 28.5 36 1.9
Escape Velocity (miles/s) 2.7 6.4 7 1.5 3.1 37 22.1 13.2 14.6 0.7
Rotation Period (hours) 1,407.6 -5,832.5 23.9 655.7 24.6 9.9 10.7 -17.2 16.1 -153.3
Length of Day (hours) 4,222.6 2,802 24 708.7 24.7 9.9 10.7 17.2 16.1 153.3
Distance from Sun (106 miles) 36 67.2 93 93 141.6 483.8 890.8 1,784.8 2,793.1 3,647.2
Perihelion (106 miles) 28.6 66.8 91.4 91.4 128.4 460.1 840.4 1,703.4 2,761.6 2,755.8
Aphelion (106 miles) 43.4 67.7 94.5 94.5 154.9 507.4 941.1 1,866.4 2,824.5 4,538.7
Orbital Period (days) 88 224.7 365.2 655.7 687 4,331 10,747 30,589 59,800 90,588
Orbital Velocity (miles/s) 29.7 21.8 18.5 0.64 15 8.1 6 4.2 3.4 2.9
Orbital Inclination (degrees) 7 3.4 0 5.1 1.9 1.3 2.5 0.8 1.8 17.2
Orbital Eccentricity 0.205 0.007 0.017 0.055 0.094 0.049 0.057 0.046 0.011 0.244
Axial Tilt (degrees) 0.01 177.4 23.5 6.7 25.2 3.1 26.7 97.8 28.3 122.5
Mean Temperature (F) 333 867 59 -4 -85 -166 -220 -320 -330 -375
Surface Pressure (atmospheres) 0 91 1 0 0.01 Unknown Unknown Unknown Unknown 0
Global Magnetic Field? Yes No Yes No No Yes Yes Yes Yes Unknown


For Additional Information Visit  The Nine Planets  or  National Air and Space Museum

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