In an extrasolar planetary system containing a single planet, the parent star is measured to move about its center of mass every 24 years. Given this, what is the orbital period of the planet?

Question

Quizplus · Accepted Answer

The orbital period of the planet is the same as the period of the star's motion about the center of mass, which is 24 years, due to the conservation of angular momentum in a two-body system.

In an Extrasolar Planetary System Containing a Single Planet, the Parent