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distances in millions of km, except where noted.

Mercury Venus Earth Moon Mars Asteroids Jupiter Saturn Uranus Neptune Pluto

Max Distance from Sun

69.7 109.0 152.2   249.1   815.7 1,507 3,004 4,537 7,375

Min Distance from Sun

45.9 107.4 147.1   206.7   740.9 1,347 2,735 4,456 4,425

Mean Distance from Sun

57.9 108.2 149.6 384,400 km1 227.9   778.3 1,427 2,869.6 4,496.6 5,900

Semi-major Axis of Orbit, AU

0.387 0.723 1.0 1.0 1.524 ~2.8 5.2013 9.538 19.18 30.06 39.52

Orbit Eccentricity

0.2056 0.0068 0.0167   0.0934   0.0485 0.056 0.0472 0.0086 0.25

Orbit Inclination to Ecliptic, degrees

7.0 3.39 0.0   1.85   1.3 2.49 0.77 1.77 17.2

Sidereal Period of Revolution

88d 224.7d 365.26d 27.322d2 687d   11.86y 29.46y 84.01y 164.8y 247.7y

Sidereal Rotation Period, days

59.0 -243.02 0.9972697 27.322 1.026   0.413 0.444 0.718 0.671 -6.4

Orbital Velocity, km/s

47.9 35.0 29.8 29.8 24.1   13.1 9.6 6.8 5.4 4.7

Inclination of Axis, Degrees

2 177.3 23.45 6.68 25.2   3.1 26.7 97.9 30.2 117.6

Equatorial Radius, km

2440 6057 6378 1738 3393   71,398 60330 26071 24764 1150

Mass, Earth = 1

0.05528 0.815 1.0 0.0123 0.1074468   317.89 95.18 14.54 17.15 0.0022

Density, kg/m3

5430 5245 5515 3341 3935 3,7003 1327 688 1272 1640 2080

Zero-pressure Density, kg/m3

5280 3990 4060 3315 3730 3,7003         2070

Oblateness4

0.0 0.0 0.003353 0.002 0.0074
0.0051?
  0.065 0.098 0.024 0.022 ?

Moment of Inertia [/mr2]

    0.3307 0.391 0.365            

Atmosphere, Main Components

none CO2, N2 N2, O2, Ar none CO2,N2, Ar   H2, He H2, He H2, He, CH4 H2, He, CH4 N2, CH4, CO

Mean Surface Temp, oC, Visible Surface [sSolid, cClouds]

167, 350 days 170 nites

-33c

457s

14s   -55s   -150c -180c -210c -220c -230?

Atmos. Press., Surface, millibars

10-9 90,000 1,000   6.0            

Surface Grav, Earth = 1

0.37 0.88 1.0   0.38   2.64 1.15 0.9 1.18 0.069

Mean Apparent Diam. of Sun as Seen from Planet

1o22'40" 44'15" 31'59"   21'   6'09" 3'22" 1'41" 1'04" 49"

Known Satellites

0 0 1   2   67 62 27
14
5

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1. Mean Distance from Earth

2. Period of Revolution About Earth

3. Average of Observed Falls

4. From Lowrie, Fundamentals Of Geophysics