List of active supernovae

This list of active supernovae.   The main page is getting big.   When I first started these pages we had about 100 objects every year.   Now we get over 1,000.   This list is provided so that active objects are more easily found.   It is also meant so that it can easily be parsed by automated programs.   Coordinates are in J2000.0 format.   A "*" in the "Latest Mag" column means that the observation is more than a month old.   Last observed is the date the object was last observed.   Max Mag is the maximum observed magnitude.   Max Date is the date of maximum observation.   The "z", or red shift, is taken from the spectra whenever possible. For more information on any object, please click on the name of the object. This will bring you directly to the main entry for this object.
Page re-generated at: 2026/08/14.900 UT