In the constellation Sagittarius
4.1 million times the mass of the Sun
Diameter roughly 15 million miles (24 million km).
A radio image of the center of the galaxy shows Sgr A* as a white dot at center, surrounded by clouds of gas. [NOAO/AUI/NSF/Jun-Hui Zhao/W.M. Goss]
This document was last modified: December 6, 2005.