I had already found the s2 page on wikipedia but it didn't have the data I needed. It covered 2 stars in detail from what I remember. There may be a star even closer than s2. I am very interested in the Max Planck link!
Fixation on the Einstein papers is a good definition of OCD.
So if you don't know about it there is this pretty cool program called Universe Sandbox that lets you either build your own gravitational systems or look at ones like the solar system or the galaxy (naturally at different levels of detail). There's a way to open up simulations other people have made and one of them appears to be at least some the stars around sag A*. Looks like S0-1, S0-2, S0-4, S0-5, S0-16, S0-19 and S0-20. I'm not sure you can get the orbital data out but you can watch the system evolve in time and you can edit the properties of all the bodies (mass, velocity, etc) or add new ones to the system.
...sorry, you cannot view external links. To see them, please
REGISTER or LOGIN <- Apparently it has been updated since I last looked at it.