in the constellation Pegasus
2.1 million to 4.6 million times the mass of the Sun
About 15 times the diameter of the Sun
This is one of the least-massive black holes yet detected in the core of a galaxy. It is roughly the same size and mass as the black hole at the center of our own galaxy, the Milky Way.
NGC 7457 is classified as a lenticular galaxy, so when viewed edge-on, it would look like a lens. Early observations with Hubble Space Telescope showed that the stars in its central bulge are more densely packed than expected.
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This document was last modified: February 17, 2011.
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