Mplanet = a3/P2, calculate the mass of an unknown planet if its moon's period is 0.058 years and semimajor axis is 0.03 AU. How many times more or less massive is this planet than the Earth? (Use 1 Earth Mass = 3x10-6 Solar Masses).
Using Mplanet = a^3/P^2 = 0.03^3 / 0.058^2 = 0.0080 Solar masses
This is 0.0080/(3x10^-6) = 2675.4 times more massive than Earth.
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