IC 1101

IC 1101 is a supergiant elliptical galaxy at the center of the Abell 2029 galaxy cluster and is one of the largest known galaxies. Its halo extends about 600 kiloparsecs (2 million light-years) from its core, and it has a mass of about 100 trillion stars.[citation needed] The galaxy is located 320 megaparsecs (1.04 billion light-years) from Earth. The galaxy was discovered on 19 June 1790, by the British astronomer Frederick William Herschel I.