Planet Profile Mars
Mass (kg)................................................................................6.42
x 10^23
Diameter (km)......................................................................................6787
Mean density (kg/m^3) .....................................................................3940
Escape velocity (m/sec)....................................................................5000
Average distance from Sun (AU)...................................................1.524
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................................................................................0.093
Maximum surface temperature (K).....................................................240
Minimum surface temperature (K).....................................................190
Visual geometric albedo.....................................................................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