Discovered by Caroline Herschel in 1783.
NGC 253 is a member of the Sculptor group of galaxies, which is located around the South galactic pole. It lies at a distance of about 10 million light years from our location. The Sculptor Group is perhaps the nearest large group of galaxies to our own Local Group. NGC 253 is one of the brightest galaxies beyond the Local Group. The galaxy is also know as the Silver Coin Galaxy and the Sculptor Galaxy.
1http://www.seds.org/messier/xtra/ngc/n0253.html