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| Greatest angular diameter, as seen from Earth | 32.5' |
| Mass | 1.99 1030kg332,000 (Earth = 1) |
| Equatorial radius | 696,000 km 109 (Earth = 1) |
| Mean density | 1410 kg/m3 0.255 (Earth = 1) |
| Surface gravity | 274 m/s2 28.0 (Earth = 1) |
| Escape speed | 618 km/s |
| Sidereal rotation period | 25.4 solar days (25.1 at equator, 34.4 at poles) |
| Axial tilt | 7.25° (relative to ecliptic) |
| Surface temperature | 5780 K (effective temperature) |
| Luminosity | 3.851026 W |
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