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| Orbital semi-major axis* | 384,000 km |
| Orbital eccentricity | 0.055 |
| Perigee** | 363,000 km |
| Apogee*** | 406,000 km |
| Mean orbital speed | 1.02 km/s |
| Sidereal orbital period | 27.3 solar days |
| Synodic orbital period | 29.5 solar days |
| Orbital inclination to the ecliptic | 5.2° |
| Greatest angular diameter, as seen from Earth | 32.9' |
| Mass | 7.35 0.012 (Earth = 1) |
| Equatorial radius | 1738 km 0.27 (Earth = 1) |
| Mean density | 3340 kg/m3 0.61 (Earth = 1) |
| Surface gravity | 1.62 m/s2 0.17 (Earth =5 1) |
| Escape speed | 2.38 km/s |
| Sidereal rotation period | 27.3 solar days |
| Axial tilt | 6.7° |
| Surface magnetic field | (no detectable field) |
| Surface temperature | 100400 K |
| *Closest approach to Earth
**Orbit around Earth ***Greatest distance from Earth |
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