| 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 in 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 |
|
|
Data courtesy JPL/NASA
|
