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Radius: 24,600 km Mass: 1026 kg Density: 1,638 kg/m3 Volume: 50 Earths Acceleration of Gravity: 11 m/s2 Escape Velocity: 23.5 km/s (twice Earth's) Number of moons: 8 Spin period (Day): 16.11 hours Orbital period: 165 years Average distance from Sun: 4.5 billion km Orbital speed: 5.43 km/s Inclination of orbit around Sun: 1.769 degrees |