- #1
wilsonlye
- 6
- 0
consider two planets, planet X and planet Y with masses, Mx and My separated with distance, D and they orbits about the centre of mass of the system which remains stationary.
we know that period of orbit for X and Y are the same because they are always collinear with the centre of mass
suppose Mx much more bigger than My, then the centre of mass of the system is almost at the centre of planet X, thus planet X will spin in its own axis.
then how to explain in system consists of multiple stars and planets. It seems to be too complicated, and the ratio of masses between planets is not infinite.
we know that period of orbit for X and Y are the same because they are always collinear with the centre of mass
suppose Mx much more bigger than My, then the centre of mass of the system is almost at the centre of planet X, thus planet X will spin in its own axis.
then how to explain in system consists of multiple stars and planets. It seems to be too complicated, and the ratio of masses between planets is not infinite.