Problem 6. (Palen, et. al., 2nd ed., Problem 49) Sirius and its companion orbit around a common center of mass with a period of 50 years. The mass of Sirius is 2.02 times the mass of the Sun. a) If the orbital velocity of the companion is 2.07 times greater than that of                   Sirius, what is the mass of the companion? b) What is the semimajor axis of the orbit?

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