Earth Statistics
 Mass (kg)5.976e+24 
 Mass (Earth = 1)1.0000e+00 
 Equatorial radius (km)6,378.14 
 Equatorial radius (Earth = 1)1.0000e+00 
 Mean density (gm/cm^3)5.515 
 Mean distance from the Sun (km)149,600,000 
 Mean distance from the Sun (Earth = 1)1.0000 
 Rotational period (days)0.99727 
 Rotational period (hours)23.9345 
 Orbital period (days)365.256 
 Mean orbital velocity (km/sec)29.79 
 Orbital eccentricity0.0167 
 Tilt of axis (degrees)23.45 
 Orbital inclination (degrees)0.000 
 Equatorial escape velocity (km/sec)11.18 
 Equatorial surface gravity (m/sec^2)9.78 
 Visual geometric albedo0.37 
 Mean surface temperature15°C 
 Atmospheric pressure (bars)1.013 
 Atmospheric composition
Nitrogen
Oxygen
Other

77% 
21% 
2% 

Moon Statistics (Luna)
 Mass (kg)7.349e+22 
 Mass (Earth = 1)1.2298e-02 
 Equatorial radius (km)1,737.4 
 Equatorial radius (Earth = 1)2.7241e-01 
 Mean density (gm/cm^3)3.34 
 Mean distance from Earth (km)384,400 
 Rotational period (days)27.32166 
 Orbital period (days)27.32166 
 Average length of lunar day (days)29.53059 
 Mean orbital velocity (km/sec)1.03 
 Orbital eccentricity0.0549 
 Tilt of axis (degrees)1.5424 
 Orbital inclination (degrees)5.1454 
 Equatorial surface gravity (m/sec^2)1.62 
 Equatorial escape velocity (km/sec)2.38 
 Visual geometric albedo0.12 
 Magnitude (Vo)-12.74 
 Mean surface temperature (day)107°C 
 Mean surface temperature (night)-153°C 
 Maximum surface temperature123°C 
 Minimum surface temperature-233°C 

Earth Data Aquired From Views of the Solar System
by Calvin J. Hamilton

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