| 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 |
