ABSTRACT
Sagittarius A* Strong radio source located in Sagittarius and apparently located at the center of the Galaxy at RA 17h45m.6 , dec−28◦56′ (at galactic longitude 0, latitude 0). Measurements of stellar velocity profiles near the center of the object indicate the presence of an object of mass approximately 2.6×106M in a sphere of radius 0.15 pc. This implies the existence of a massive black hole at the center of our galaxy, at about 8 kpc.
