User:Milton Beychok/Sandbox2

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Revision as of 21:58, 26 June 2011 by imported>Milton Beychok
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Earth's Moon: Facts & Figures
Physical Characteristics
Mean circumference 10,917.0 km
6,783.5 mi
Mean radius 1,737.5 km
1,079.6 mi
Mass 7.3477×1022 kg
Volume 2.197×1010 km3
Density 3.344 g/cm3
Surface area 3.79367×107 km2
Surface gravity 1.624 m/s2
Escape velocity 2,376 m/s (8,554 km/h)
Other Facts
Distance from Earth:
Average
Apogee (farthest)
Perigee (closest)

384,400 km
405,696 km
363,104 km
Rotational velocity
(around its own axis)
4.6246 m/s
Rotation period
(length of Moon day)
655.73 hours
27.322 Earth days
Orbit period around Earth(a)
(length of Moon year)
655.73 hours
27.322 Earth days
Orbit period around Sun 365 Earth days
13.359 Moon days