Imagine a planet orbiting a star. Observations show a Doppler shift in the star's spectrum of 63 m/s over the 4.6 day orbit of the planet. What is the mass of the planet in kg? Assume the star has the same mass as the Sun (2.0 × 1030 kg), there are 365.25 days in a year, and 1AU = and 1.5 × 1011 m.
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