X is in the direction toward the galactic center. Y Coords Rectangular space coordinates relative to the sun in parsecs. Y is in the direction of the galactic rotation. Z Coords Rectangular space coordinates relative to the sun in parsecs. Z is the distance from the galactic plane and is positive toward the galactic north pole.
V is in the direction of the galactic rotation.
W points in the direction of the galactic north pole. The distances and center of mass velocities were used.