List of supernovae
Nowadays be discovered with the help of automated search programs each year hundreds of supernovae, which are removed in other galaxies millions of light years. Based on a single galaxy are supernovae usually relatively rare events (few events per millennium ).
The last supernova in the Milky Way galaxy was observed by Johannes Kepler SN 1604.
The appointment follows a systematic scheme by the year followed by one or two letters of the Latin alphabet.