N 103B

N 103B (LHA 120-N 103B) is a supernova remnant in the Large Magellanic Cloud (LMC), considered likely the remnant of a Type Ia supernova. It located is on the edge of a HII region and not far from a stellar cluster of young stars. It is presumed to be less than 2000 years old, based upon its small size and other analysis. The name N 103B stems from a 1956 catalog of Lyman alpha sources in the Magellanic Clouds, "N" indicating a nebula. The remnant has since shown in numerous radio and X-ray surveys.