Galactic Coordinates

The galactic coordinates take like plane of reference that galactic one that forms an angle of 62°41 ' with the celestial Equator and like direction of origin that one of the characterized from the measures of radio astronomy and placed galactic center in the constellation of the Sagittario (?=17h 42m 30s, and?=-28°55' 18").

These references allow to define a North Pole and a galactic South Pole through slowly galactic the normal direction al and passing for the Sun. The galactic North Pole has equatorial coordinates?=12h 49m and?=+27° 24'.

A galactic longitude (l) and a galactic latitude are defined (b), both measured in degrees.

The galactic latitude is traced on the great circles passing for the poles and varies from b=-90° (galactic South Pole) to b=+90° (galactic North Pole).

The varied galactic longitude from l=0° (center of the galaxy) to l=360° and is increasing in the back of spin of the Milky Way (seen from the North Pole the longitude grows in counter-clockwise sense).