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| Orbital semi-major axis | 0.72 A.U. 108.2 million km | 
| Orbital eccentricity | 0.007 | 
| Perihelion | 0.72 A.U. 107.5 million km | 
| Aphelion | 0.73 A.U. 108.9 million km | 
| Mean orbital speed | 35.0 km/s | 
| Sidereal orbital period | 224.7 solar days 0.615 tropical years | 
| Synodic orbital period | 583.9 solar days | 
| Orbital inclination to the ecliptic | 3.39° | 
| Greatest angular diameter, as seen from Earth | 64" | 
| Mass | 4.87 0.82 (Earth = 1) | 
| Equatorial radius | 6052 km 0.95 (Earth = 1 ) | 
| Mean density | 5250 kg/m3 0.95 (Earth = 1) | 
| Surface gravity | 8.87 m/s2 0.90 (Earth = 1) | 
| Sidereal rotation period |  243.0 solar days* | 
| Axial tilt | 177.4° | 
| Surface magnetic field | <0.001 (Earth = 1) | 
| Magnetic axis tilt relative to rotation axis |  | 
| Mean surface temperature | 730 K | 
| Number of moons | 0 | 
| *A negative sign denotes retrograde rotation. | |