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NGC 4473A supermassive black hole in the constellation Virgo.
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Astronomers discovered a likely supermassive black hole in the core of NGC 4473 as part of a survey of possible host galaxies with Hubble Space Telescope. NGC 4473 is classified as an elliptical galaxy, although it is slightly flattened into a disk-like shape. By measuring the orbital motions of stars near the center of the galaxy, a team of astronomers concluded that the stars are orbiting a black hole of roughly 50 million to 100 million times the mass of the Sun.
This and other black holes...