What is the estimated mass of the supermassive black hole, Sagittarius A* ($ ext{Sgr A}^*$)?
About $4.1$ to $4.5$ million times the mass of our Sun
The central supermassive black hole, identified as Sagittarius A* ($ ext{Sgr A}^*$), has an estimated mass falling within the range of $4.1$ to $4.5$ million times the mass of our Sun. While this mass is colossal on a stellar scale, it is relatively insignificant when compared to the total mass of the entire Milky Way, which is dominated by dark matter. This localized gravitational anchor dictates the orbits of stars in the immediate vicinity of the core. However, if $ ext{Sgr A}^*$ were to disappear, the orbital paths of the vast majority of stars further out would remain almost entirely unchanged because the large-scale cohesion is maintained by the distributed mass of the dark matter halo.
