THE ARTEMIS PROJECT
PRIVATE ENTERPRISE ON THE MOON
Comparison of Earth and Moon
Section M 3.1.
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Basic Statistics for the Earth and Moon

Moon

 Mass .............................. 1.62E+23 lbm (7.35E+22 kg)
 Mass .............................. 0.012298 Earth 
 Equatorial radius .................5,700,131 ft (1,737.40 km)
 Equatorial radius .................. 0.27241 Earth 
 Mean density .........................208.51 lbm/ft^3 (3.34 gm/cm^3)

 Mean distance from Earth ............238,855 mi (384,400 km)
 Rotational period ................. 27.32166 days 
 Orbital period .................... 27.32166 days 
 Average length of lunar day ....... 29.53059 days 
 Mean orbital velocity .................3,379 ft/sec (1.03 km/sec)

 Orbital eccentricity .................0.0549 
 Tilt of axis .........................1.5424 deg 
 Orbital inclination ................. 5.1454 deg 

 Equatorial surface gravity ............5.315 ft/sec^2 (1.62 m/sec^2)
 Equatorial escape velocity ............7,808 ft/sec (2.38 km/sec)

 Visual geometric albedo ............... 0.12 
 Magnitude (Vo) ...................... -12.74 
 Mean surface temperature .............. -9.4 F (-23C)
 Mean surface temperature (day) ....... 224.6 F (107C)
 Mean surface temperature (night) .....-243.4 F (-153C)
 Maximum surface temperature .......... 253.4 F (123C)
 Minimum surface temperature ..........-387.4 F (-233C)

Earth

 Mass .............................. 1.32E+25 lbm (5.98E+24 kg)
 Mass ..................................... 1 Earth 
 Equatorial radius .................2.093E+07 ft (6.378E+03 km)
 Equatorial radius .........................1 Earth 
 Mean density .........................344.29 lbm/ft^3 (5.515 gm/cm^3)

 Mean distance from the Sun .......92,957,130 mi (149,600,000 km)
 Mean distance from the Sun ............... 1 
 Rotational period .................. 0.99727 days 
 Rotational period .................. 23.9345 hours 
 Orbital period ......................365.256 days 
 Mean orbital velocity ............... 97,736 ft/sec (29.79 km/sec)

 Orbital eccentricity .................0.0167 
 Tilt of axis ......................... 23.45 deg 
 Orbital inclination ...................... 0 deg 

 Equatorial escape velocity .......... 36,680 ft/sec (11.18 km/sec)
 Equatorial surface gravity .......... 32.174 ft/sec^2 (9.78 m/sec^2)

 Visual geometric albedo ............... 0.37 
 Mean surface temperature .................59 F (15C)
 Atmospheric pressure .................. 14.7 lb/in^2 (1.013 bar)
 Atmosphere
    Nitrogen ............................ 77% 
    Oxygen .............................. 21% 
    Other gasses ......................... 2% 

Comparison of Earth and Moon

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