Ton-618{BlackHole}

TON 618 (short for Tonantzintla 618) is an incredibly powerful, hyperluminous quasar and a Lyman-alpha blob located near the border of the constellations Canes Venatici and Coma Berenices. It sits at a comoving distance of roughly 18.2 billion light-years from Earth. [1] Key Scientific Facts The Black Hole: At its center lies one of the most massive black holes ever identified. Modern estimates place its mass at roughly 40.7 billion times the mass of the Sun, though historical calculations often cited it closer to 66 billion solar masses. [1, 2] Extreme Brightness: The quasar is fueled by an enormous accretion disk of rapidly swirling gas and dust. This friction generates intense radiation, making TON 618 shine with the luminosity of 100 trillion Suns—completely outshining its host galaxy. Discovery History: It was first recorded in 1957 during a survey of faint blue stars at the Tonantzintla Observatory in Mexico. Because it showed up as "decidedly violet" on photographic plates, it was cataloged as entry number 618. It wasn't until 1970 that radio emissions confirmed its nature as a quasar. [1]TON 618 resides in an unnamed, distant host galaxy, which itself is classified as a Lyman-alpha blob. [1]