The point in the Galactic plane that lies directly opposite the Galactic center. It lies in the constellation Auriga at approximately R.A. 05h 46m, Dec. +28° 56'.
The rotational center of the Milky Way galaxy located in the direction of the Sagittarius constellation at a distance of 7.62 ± 0.32 kpc. Its equatorial coordinates (J2000 epoch) are: R.A. 17h45m40.04
s, Dec. -29° 00' 28.1''. The Sun orbits around the Galactic center once every 200 million years at a speed of 220 km per second. It is believed that there is a supermassive black hole at the Galactic center.
The International Astronomical Union (IAU) defined the galactic coordinate system in reference to the Equatorial coordinate system in 1958 The north galactic pole is defined to be at right ascension 1
2h 49m, declination +27.4� (B1950), and the zero of longitude is the great semicircle that originates from this point along the line in position angle 123� with respect to the equatorial pole. The galactic longitude increases in the same direction as right ascension. Galactic latitude is positive towards the north galactic pole, the poles themselves at �90� and the galactic equator being zero.
In the Galactic coordinate system, the angle between the line of sight to an object and the Galactic equator. Galactic latitude ranges from +90 degrees to -90 degrees.
In the Galactic coordinate system, the angle between the Galactic Center and the projection of the object on the Galactic plane. Galactic longitude ranges from 0 degrees to 360 degrees.