Earth's Moon

Full size image of the Moon (110 KB.)

Constants

•  Mean Radius:               1737.4 km

•  Mass:                      0.012 (Earth=1)

•  Density:                   3.34 (g/cm^3)

•  Gravity:                   0.165 (Earth=1)

•  Orbit Period:              27.32 (Earth days)

•  Rotation Period:           27.32 (Earth days)

•  Semimajor Axis of Orbit:   384,400 km

•  Eccentricity of Orbit:     0.055

Lunar Nomenclature

Official names of features on the Earth's Moon as approved by the International Astronomical Union.

USGS Clementine Images

The Galileo SSI Team has some beautiful moon images.

Lunar maps are available through USGS.

(Ordering specifics are listed below)

• North Polar Region I-1326
• Near Side I-2276
• Far Side I-1218
• South Polar Region I-1326

Geologic map of the Near Side of the Moon (Wilhelms and McCauly)	I-703
Geologic map of the East Side of the Moon (Wilhelms and El-Baz)	I-948
Geologic maop of the West Side of the Moon (Scott and others)	I-1034
Geologic map of the Central Far Side of the Moon (Stuart-Alexander)	I-1047
Geologic map of the North Side of the Moon (Lucchitta)	I-1062
Geologic map of the South Side of the Moon	I-1162

Maps can be ordered from:

For general information about USGS products and maps call

1-888-ASK-USGS

or see Ordering U. S. Geological Survey Products.