Mass (kg)
| 3.3 x 1023
|
Diameter (km)
| 4879.4
|
Mean density (kg/m3)
| 5420
|
Escape velocity (m/s)
| 4300
|
Average distance from Sun
| 0.387 AU (57,909,175 km)
|
Rotation period (length of day in Earth days)
| 58.65
|
Revolution period (length of year in Earth days)
| 87.97
|
Obliquity (tilt of axis degrees)
| 0
|
Orbit inclination (degrees)
| 7
|
Orbit eccentricity (deviation from circular)
| 0.206
|
Mean surface temperature (K)
| 452
|
Maximum surface temperature (K)
| 700
|
Minimum surface temperature (K)
| 100
|
Visual geometric albedo (reflectivity)
| 0.12
|
Largest known surface feature
| Caloris Basin
(1350 km diameter)
|
Atmospheric components
| trace amounts of
hydrogen and
helium
|
Surface materials |
basaltic and anorthositic rocks and regolith |