IC 1101

IC 1101 is a class S0 supergiant (cD) lenticular galaxy at the center of the Abell 2029 galaxy cluster. It has an isophotal diameter at about 123.65 to 169.61 kiloparsecs (400,000 to 550,000 ly). It possesses a diffuse core which is the largest known core of any galaxy to date, and also hosts a supermassive black hole that is one of the largest black holes known. The galaxy is located at 354.0 megaparsecs (1.15 billion light-years) from Earth. The galaxy was discovered on 19 June 1790, by the British astronomer William Herschel.
It is the largest galaxy known to be discovered, with a diameter of 5 million light years.
Category:Galaxies
Category:Lenticular galaxies