Mercury

Full size image of Mercury (136 KB.)

Constants

•  Mean Radius:               2439.7 km

•  Mass:                      0.055 (Earth=1)

•  Density:                   5.43 (g/cm^3)

•  Gravity:                   0.284 (Earth=1)

•  Orbit Period:              87.97 (Earth days)

•  Rotation Period:           58.65 (Earth days)

•  Semimajor Axis of Orbit:   0.387 au

•  Eccentricity of Orbit:     0.206

Mercury Nomenclature

Official names of features on Mercury as approved by the

International Astronomical Union.

Mercury Images

Mariner 10 Image Project.

The image above was produced from USGS I-1149, 1979. Higher resolution versions of the image can be downloaded from Mariner Mercury 10 Shaded Relief Map under the heading Orthographic View, centered at 0N latitude, 110W longitude