Venus: Planet Profile

Mass (kg) 4.87 x 1024
Diameter (km) 12104
Mean density (kg/m3) 5250
Escape velocity (m/s) 10400
Average distance from Sun 0.723 AU (108,208,930 km)
Rotation period (length of day in Earth days) 243.02 (retrograde)
Revolution period (length of year in Earth days)     224.7
Obliquity (tilt of axis degrees) 178
Orbit inclination (degrees) 3.39
Orbit eccentricity (deviation from circular) 0.007
Mean surface temperature (K) 726
Visual geometric albedo (reflectivity) 0.59
Highest point on surface Maxwell Montes
(17 km above mean planetary radius)
Atmospheric components 96% carbon dioxide,
3% nitrogen,
0.1% water vapor
Surface materials basaltic rock and altered materials