Imagine another solar system,with a star of the same mass as the Sun.Suppose a planet with a mass twice that of Earth (2MEₐᵣth)orbits at a distance of 1 AU from the star.What is the orbital period of this planet?
A)1 year
B)6 months
C)2 years
D)It cannot be determined from the information given.

Question

Quizplus · Accepted Answer

The orbital period of a planet does not depend on its mass but on the mass of the star it orbits and its distance from the star. Since the star has the same mass as the Sun and the planet orbits at a distance of 1 AU (the same as Earth), the orbital period would be 1 year, just like Earth's.

Imagine Another Solar System,with a Star of the Same Mass