The masses of the bodies in orbit around each other can be measured, if we can measure the distances and periods of revolution.
Kepler's third law
Kepler's third law states that, the square of the period of a planet's orbit is proportional to the cube of its semimajor axis.
Newton reformed this law and the reformulation of Kepler's third law allows us to measure the masses of bodies in orbit around each other, if we can measure;
- the distances, and
- the periods of revolution
Thus, the masses of the bodies in orbit around each other can be measured, if we can measure the distances and periods of revolution.
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