A magnitude 16.0 supernova, 2010bj, was discovered on the 27th March, 2010, by L. Cox and T. Puckett, in the edge-on spiral galaxy NGC 2357 in the constellation Gemini. The supernova is located 31.8" east and 19.4" south from the center of the galaxy. As yet the type is unknown.
Position (2000): RA = 07 17 43.21, Dec = +23°21'03".8