ILT J2336+1842

ILT J2336+1842 also known as ILT J233624.72+184247.9 is a high-redshift quasar, and radio galaxy at z = 6.6, equivalent to a distance of 17.55 billion light years away. The galaxy has an apparent Z magnitude of 22.04 and is in the constellation of Pegasus.
The galaxy was first discovered in 2022 in a survey of 24 radio-bright quasars between redshifts z = 4.9 to z = 6.6. As of 2023, it is believed to be the most distant radio galaxy known, greatly succeeding TGSS J1530+1049.

Physical properties

ILT J2336+1842 is a dwarf galaxy that is not known to be a part of galaxy clusters and it is probably a field galaxy. Using an angular diameter of 0.1 arcsecs from the eight data release from the DESI telescope, and a redshift-based distance of 5,380 megaparsecs, it has an estimated diameter of 8,500 light years.
The galactic center contains a radio-bright quasar with an estimated absolute luminosity of -24.32, equivalent to 457.09 billion making it one of the most luminous high redshift quasars discovered.
In 2023, it was discovered in the second data-release of the LOFAR Two-Metre Sky Survey. The radio lobes have an extent of 54.8 kiloparsecs or 179,000 light years across based on an angular diameter of 10.13 arcsecs. With a predicted redshift of z = 6.6 it is believed to the furthest known radio galaxy being more distant than the previous most distant radio galaxy, TGSS J1530+1049.