. Bright Supernovae - 2012 . This data comes from IAU 's IAU Circulars , and Transient Objects Confirmation page , The Astronomer's Telegram and several other sources. An archive of the 2012 updates to this page is available. This is a archive of the supernovae discovered in 2012. For supernovae that are still visible, please look at the main page . Please look in the Archive page for a complete list. For more information, you can look at the following Supernova Catalogs: . IAU List of Supernovae since 1885