Question

Mars has two moons, Deimos and Phobos. The orbit of Deimos has a period of 1.26 days and an average radius of 2.35×10^3⁣ km . The average radius of the orbit of Phobos is 9.374×10^3 km .

Mars has two moons, Deimos and Phobos. The orbit of Deimos has a period of 1.26 days and an average radius of 2.35×10^3⁣ km . The average radius of the orbit of Phobos is 9.374×10^3 km . According to Kepler’s third law of planetary motion, what is the period of Phobos?