Calculate the Sun's orbital period.

The fictional asteroid Lilliput orbits around the Sun one time every 3.605 Earth years. What is the average distance for Lilliput away from the Sun in astronomical units (AU)? One astronomical unit is equal to the average distance the Earth is away from the Sun, 1.496x1011m. The mass of the Sun is 1.989x1030kg.

Calculate the period T of a dwarf planet whose orbit has a semimajor axis of 250 AU.

The average distance of the planet Mercury from the sun is 0.39 times the average distance of the earth from the sun.How long is a year on Mercury in units of earth years?___ earth years

Why are all large celestial bodies (stars, planets, larger moons) very nearly spherical in shape?   a because of the centrifugal force from the body's rotation   b because of tidal forces   c because gravity tries to pull every part of the celestial body to the center   d because of the pressure from the heat in the body's core

Tonight you see a waning crescent in the night sky. A few (n) days later, the night is once again clear and you see a waning crescent. How many degrees did the Moon advance in its orbit during this time frame?

Find the ratio of the mass of Jupiter to that of Earth based on data in Table .

Solve the following problem: Two stars, named A and B, each with a mass equal to the Sun's mass are in orbit around each other. If the distance between the two stars is 1.0 AU. What is the period of their orbit? Describe each step in solving the problem:

Mars has two moons, Phobos and Deimos. Phobos orbits Mars at a distance of 9380 km from Mars’s center, while Deimos orbits at 23,500 km from the center. What is the ratio of the orbital period of Deimos to that of Phobos?

A planet in a circular orbit about a star has an orbital radius of 3.70 au . If the star has a mass that is 1.80 times our own Sun's mass, determine the time ? , in units of Earth years, for one revolution of the planet around the star.T = ? Earth years