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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. | |