Astronomers observing a distant solar system have noticed a planet orbiting a star with a period of 4.44x107 s. The distance from the planet to the star is 4.28x1011 m. Calculate the mass of the star, in kg.(adsbygoogle = window.adsbygoogle || []).push({});

ihave used v = 2*pi*r/T and v=(2Gm/r)^1/2

i get 8.75e18

is this the way to calculate m

thanks in advance

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# Homework Help: Gravitational Potential and Satellite Motion

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