Iapetus is Saturn's third largest moon. It's known as the yin and yang moon as interestingly it's got a two-tone colouration. It also has an equatorial ridge that runs half way around the moon.
Orbital period: 15.95 earth days
Orbital Speed: 5.58 km/s
Inclination: 0.35°
Mean Radius: 2,574.7 km
Circumference: 16,177.5 km
Mass: 1.346 x 1023 kg
Surface Gravity: 1.35 m/s2
Apparent Magnitude: 8.5
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