QSO J0529-4351

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QSO J0529−4351 (SMSS J052915.80–435152.0) is a quasar, 12 billion light-years away in the Pictor constellation, notable for being the brightest of its kind, and furthermore, for being the most luminous object ever observed. The black hole at its centre has a mass of approximately 17 billion solar masses, and accretes around one solar mass per day. The quasar was discovered using the Very Large Telescope of the European Southern Observatory and reported on 20 February 2024.^[2]^[1]^[3]

QSO J0529−4351
Wide-field of the region around the quasar J0529-4351
Observation data (Epoch )
Constellation	Pictor
Right ascension	05^h29^m 15.8^s
Declination	−43° 51′ 52″
Redshift	3.962^[1]
Apparent magnitude (V)	16^[1]
Notable features	brightest of its kind most luminous object ever observed contains fastest growing black hole
Other designations
SMSS J052915.80−435152.0 Quasar J0529−4351
See also: Quasar, List of quasars

QSO J0529−4351