You are the science officer on a visit to a distant solar system. Prior to landing on a planet you measure its diameter to be 1.8 x 10' m and its rotation period to be 22.3 hours. You have previously determined that the planet orbits 6.1 x 10 m from its star with a period of 402 earth days. Once on the surface you find that the acceleration due to gravity is 86.6 m/s". What are the mass of (a) the planet and (b) the star? (G = 6.67 x 10-11 N . m2/kg?) O (a) 1.9 x 1020 kg, (b) 1.1 x 1032 kg O (a) 1.9 x 1020 kg, (b) 6.6 x 1031 kg O (a) 1.0 x 1020 kg. (b) 6.6 x 1031 kg O (a) 1.0 x 1020 kg. (b) 1.1 x 1032 kg