After reading this fascinating story about a new exoplanet, I was wondering about how mass, speed and distance determine a circular orbit of a planet around a star.
Given the mass of the sun and star, and the distance between them, is there only one possible orbital velocity?
Given any 2 of the following, is it possible to calculate the 3rd?
- Relative mass of the planet to the sun
- Orbital velocity
- Distance between the 2 masses
And, given 1 of the above, are there an infinite number of possible values for the other 2?