Iota draconis is the eighth brightest star in the, Physics

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Iota draconis is the eighth brightest star in the

Iota Draconis is the eighth brightest star in the constellation Draco. Observations show that a planet, with an orbital period of 1.5 year, is orbiting this star. The mass of Iota Draconis is 1.05 M_sun.

a) Compute the size of the semi major axis of this planet's orbit.

(in AU)

b) The radial speed of the star is observed to vary by 592 m/s. Use conservation of momentum to evaluate the mass of the planet. Suppose the orbit is circular, we are observing the orbit edge-on, and no other planets orbit Iota Draconis. Express the mass as a multiple of the mass of Jupiter.

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