Mars: Planet Profile

Mass (kg) 6.42 x 1023
Diameter (km) 6787
Mean density (kg/m3) 3940
Escape velocity (m/s) 5000
Average distance from Sun 1.524 AU (227,936,640 km)
Rotation period (length of day in Earth days) 1.026
Revolution period (length of year in Earth days)     686.98
Obliquity (tilt of axis degrees) 25
Orbit inclination (degrees) 1.85
Orbit eccentricity (deviation from circular) 0.093
Maximum surface temperature (K) 310
Minimum surface temperature (K) 150
Visual geometric albedo (reflectivity) 0.15
Highest point on surface Olympus Mons
(about 24 km above surrounding lava plains)
Atmospheric components 95% carbon dioxide,
3% nitrogen,
1.6% argon
Surface materials basaltic rock and altered materials