# Key Words

General
There are nine planets in our Solar System, and each is very unique. If you visited each planet, your weight would be different because weight is a measure of the force of gravity on objects. So, if you want to weigh less, head to Mars. If you want to weigh more, go for Jupiter. To find out more about your weight on each planet, just weigh yourself.

Each planet is very interesting and it is a good idea to compare them. Look at the data table below for more general information on all the planets. To find out specifics about each planet, use the links above (click on the words or the planet itself).

To find your weight on , enter your weight (in lbs) on earth: .

 On Planet . . . You will weigh . . . Mercury 0.38 x (your weight) Venus 0.91 x (your weight) Earth 1 x (your weight) Mars 0.38 x (your weight) Jupiter 2.54 x (your weight) Saturn 1.08 x (your weight) Uranus 0.91 x (your weight) Neptune 1.19 x (your weight) Pluto 0.6 x (your weight)

Basic Planetary Data

 Mercury Venus Earth Mars Jupiter Saturn Uranus Neptune Pluto Max. distance from Sun (million km) 69.7 109 152 249 815.7 1,507 3,004 4,537 7,375 Min. distance form Sun (million km) 45.90 107.4 147 206 740.9 1,347 2735 4456 4425 Mean distance from Sun (million km) 57.9 108.2 149.6 227.9 778.3 1427 2869.6 4496.7 5900 Sidereal period (years) .240 .615 1.000 1.880 11.862 29.457 84.013 164.793 247.7 Sidereal period (days) 87.969 224.701 365.256 686.980 4,332.589 10,759.22 30,684.8 60,190.5 90,465.0 Synodic period (days) 115.88 583.92 ----- 779.94 398.88 378.09 369.66 367.49 366.73 Eccentricity .2056 .0067 .0167 .0934 .0484 .0556 .0472 .0086 .250 Inclination to the ecliptic (degrees) 7.00 3.39 ---- 1.85 1.30 2.49 .77 1.77 17.2 Mean orbital velocity (km) 47.89 35.03 29.79 24.13 13.06 9.64 6.81 5.43 4.74 Mean apparent diameter of Sun from planet 1° 22'40" 44'15" 31'59" 21' 6'09" 3'22" 1'41" 1'04" 49"

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