IRAS00500+6713 is the catalogued infrared source for an unusual nebula in Cassiopeia, while the central star has a designation WD J005311, with the whole
central star IRAS00500+6713, which is the result of a merger of a CO white dwarf and an ONe white dwarf. This makes Pa 30 and IRAS00500+6713 the only SN
central star. Pa 30 refers to both the nebula (originally catalogued as IRAS00500+6713) and the central star (designated as WD J005311). The shell is bright