What is the approximate orbital period of an object that is moving in a circular orbit around the Sun at the inner edge of the doughnut-shaped part of the Oort cloud?
A)1000 years
B)100,000 years
C)10,000 years
D)10,000,000 years

Question

Quizplus · Accepted Answer

The inner edge of the Oort cloud is thought to be about 2,000 to 5,000 astronomical units (AU) from the Sun. Using Kepler's third law of planetary motion, which relates the orbital period of a body to its average distance from the Sun, an object at this distance would have an orbital period of approximately 100,000 years.

What Is the Approximate Orbital Period of an Object That