If we know the average separation and period of revolution for a binary system, we can then measure
A) their absolute magnitudes.
B) the actual sizes of the two stars.
C) the actual luminosity of each star.
D) the actual mass of both individual stars.
E) the total mass of the system.

Question

Quizplus · Accepted Answer

Using Kepler's third law, the average separation and period of revolution allow us to calculate the total mass of the binary system.

If We Know the Average Separation and Period of Revolution