I've been googling like crazy the past few hours trying to find something i can use :) I find a lot of general explenations, but i'm having a hard time finding a concrete model to what is used to get the final values that seem to be extracted from the data gained from doppler/radial velocity measurements. So you get a grab with radial velocity and time, but what do you do with this data to deduce the size of a planet, it's distance from the star etc. As far as i can see, you get the total period of the planets orbit, and the radial velocity of the star at some given time in the orbit. But i'm unsure of how this translates into the values of mass and radius of orbit. If you could explain, or point me in the right direction :) it'd be greatly appreciated.