Coordinates of Sol: 0 / 0 / 0
Coordinates of Sag A*: 25.21875 / -20.90625 / 25899.96875
This is weird. AFAIK, Sag A* is the exact centre of the galaxy, and the "prime meridian" should run from Sol to it, by definition. It's not unreasonable for Sag A* to have a nonzero "height" coordinate...