Hou & Han, 2014, A&A, 569, A125
Galactic
coordinates
Transformation
from ecliptic
coordinates
Galactic coordinates
Sun about
20pc “above”
(north) of
Galactic
disk
Galactic coordinates
Place a (hour) d (degree) l (degree) b (degree)
Galactic
Center
12h 45.6m -28.94d 0d 0d
Galactic
Anti-Center
5h 45.6m +28.94d 180d 0d
Galactic
North Pole
12h 51.4m +27.13d 0d +90d
Galactic
South Pole
0h 51.4m -27.13d 0d -90d
0 < a < 24h; -90 < d < +90d, 0 < l < 360d, -90 < b < +90d
Be careful about the
sign/direction of X
and U