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)2 years
C)6 months
D)It cannot be determined from the information given.

Question

Quizplus · Accepted Answer

The orbital period of a planet depends on the distance from its star and the mass of the star, not the mass of the planet. 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