Mercury.
Statistics.
Diameter: 4,878 km (3,030 miles)
Rotation Period about Axis: 58.65 days
Mass: 0.33x10^24 kilograms (0.06 x Earth's)
Revolution Period about the Sun: 0.24 years
Density: 5,427 kg/m^3 Tilt of Axis: 0o
Minimum Distance from Sun: 46.0 million km (28.6 million miles)
Surface Gravity: 3.7 m/s^2 (0.38 x Earth's)
Maximum Distance from Sun: 69.8 million km (43.4 million miles)
Temperature Range on Mercury: -184o C to 427o C(-300o F to 800o F)
Orbital Semimajor Axis: 0.387 AU (Earth=1 AU)
Average Surface Temperature (K): 440K
Minimum Distance from Earth: 77.3 million km (48.0 million miles)
Satellites: 0