You shouldn't be surprised. Massive black holes in the center of galaxies (and probably also of clusters) tend to have a bunch of stars orbiting them. I mean in real life, not in the game: the movement of stars that orbit the black hole in the center of the Milky Way galaxy have been directly observed. There are many: only one study lasting 16 years tracked 28 of them. One of these stars made a full orbit during that period, so it's pretty close, relatively speaking.