NGC 147

NGC 147 is a Dwarf spheroidal galaxy which is located in the constellation Cassiopeia, 2.58 million light years away from Earth . NGC 147 is a satellite galaxy of Andromeda (M31) and belongs to the Local group of galaxies. It forms a physical pair with the nearby galaxy NGC 185, another remote satellite of M31. It is fainter but slightly larger than NGC 185, but they are both visible in small telescopes.

NGC 147 was discovered by John Herschel in September 1829 and the membership of NGC 147 in the Local Group was confirmed by Walter Baade in 1944 when he was able to resolve the galaxy into individual stars with the 100-inch (2.5 m) telescope at Mount Wilson near Los Angeles.

NGC 147 DDO3