TON-618

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TON 618 (short for Tonantzintla 618) is a hyperluminous, broad-absorption-line, radio- loud quasar and Lyman-alpha blob located near the border of the constellations Canes Venatici and Coma Berenices, with the projected comoving distance of approximately 18.2 billion light-years from Earth. It possesses one of the most massive black holes ever found, at 66 billion Mo.