Sun-Earth mass ratio Kepler's laws also apply to the motion of satellites around a planet. The table shows A3/T2 for a number of Earth satellites. The ratio A3/T2 is constant to a fraction of a percent, although the periods vary by ≈ 35. Using these data and taking the major diameter of Earth's solar orbit to be Ae = 2.99 × 108 km, calculate the mass of the Sun relative to the mass of the Earth, Ms/M
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