| Average distance from Earth | 384,400 km (center to center) |
| Eccentricity of orbit | 0.055 |
| Maximum distance from Earth | 405,500 km |
| Minimum distance from Earth | 363,300 km |
| Inclination of orbit to ecliptic | 5º 9' |
| Average orbital velocity | 1.022 km/sec |
| Orbital period (sidereal) | 27.321661 days |
| Orbital period (synodic) | 29.5305882 days |
| Inclination of equator to orbit | 6º 41' |
| Equatorial diameter | 3476 km |
| Mass | 7.35 x 1022 kg |
| Average density | 3360 kg/m3 |
| Surface gravity | 0.167 earth gravity |
| Escape velocity | 2.38 km/sec |
| Surface temperature | 100º to 400º K (-274º to 266º F) |
| Average albedo | 0.07 |