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Gaia BH2
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Gaia BH2 is a binary system consisting of a red giant and a stellar-mass black hole. Gaia BH2 is located about 3,800 light years away in the constellation of Centaurus, making it as of 2024 the third-closest known black hole system to Earth. Gaia BH2 is the second black hole discovered from Gaia DR3 astrometric data.