mercury

Average Distance From Sun
36.0 million miles
(57.9 million km)

Mass
0.055
(earth = 1)..

Diameter
3032 miles
(4,879 km)

Surface Gravity
0.38
(earth = 1)

Length of Day
58.646 days

Length of Year
87.969 days

Mean Surface Temperature
350* C (day)
-170* C (night)

Inclination to Axis
practically 0 degrees

Albedo
0.06

Escape Velocity
4.3 km/s

Known Moons
0

Mercury orbits the sun faster than any other planet; zipping along at 29 miles per second.

Mercury is only slightly larger than the Earth's moon.

Mercury is often hard to see because it always lies close to the sun.