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What is the mass of the star called Hot Jupiter? How fast

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In 2004 astronomers reported the discovery of a large Jupiter-sized planet orbiting very close to the star HD 179949 (hence the term "hot Jupiter"). The orbit was just (1/9) the distance of Mercury from our sun, and it takes the planet only 3.09 days to make one orbit (assumed to be circular). What is the mass of the star? Express your answer (a)in kilograms and (b)as a multiple of our sun's mass

c) How fast (in km/s) is this planet moving?

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The Solution provides mass of the star and the rate at which the planet is moving.

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In 2004 astronomers reported the discovery of a large Jupiter-sized planet orbiting very close to the star HD 179949 (hence the term "hot Jupiter"). The orbit was just (1/9) the distance of Mercury from our sun, and it takes the planet only 3.09 days to make one orbit ...

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