What is the only way to measure the mass of a star accurately?
A) Measure its gravitational effect on another object.
B) Measure its spectral type and luminosity class,then use the H-R diagram.
C) It is not possible to measure the mass of a star.
D) Measure its distance using trigonometric parallax and its brightness using photometry.

Question

Quizplus · Accepted Answer

The mass of a star can be accurately measured by observing its gravitational effect on another object, such as in a binary star system where the gravitational interaction between the two stars can be used to calculate their masses.

What Is the Only Way to Measure the Mass of a Star