To determine the orbital period of a visual binary,what must we measure?

Question

Quizplus · Accepted Answer

To determine the orbital period of a visual binary, we must measure the positions of the stars in the binary system over time. By observing the stars' changing positions on the sky, we can determine the time it takes for them to complete one orbit around their center of mass, which gives us the orbital period of the binary system. Brightness, luminosity, and temperature are not directly related to the orbital period of a visual binary.

To Determine the Orbital Period of a Visual Binary,what Must