Supernova 2006co

SN 2006co was the twelfth supernova found by the BRASS team. This SN is located in galaxy ESO 323-G25, at R.A. 12^o52'40".93, Dec -39^o01'48".9 (2000.0). SN 2006co was discovered on 2006 May 27.10 UT through images made at the CEAMIG-REA Observatory at Belo Horizonte, Brazil, and confirmed by CBET 523 and IAUC 8716.

ESO 323-G25 is a spiral galaxy belonging to morphological class SA(rs)b. According to NASA Extragalactic Database (NED), its recession speed and redshift are 4229 ± 8 km/s and 0.01411 ± 0.00003 respectively. Those figures imply in a distance of about 60.4 megaparsec (close to 197 million light years), assuming a value of 70 km/s.Mpc for the Hubble constant. Given that estimated distance plus the apparent magnitude at discovery (16.0), we could estimate the absolute magnitude of SN 2006co as -18.8, also at discovery. Further spectra of this SN have been taken and have demonstrated that it was a young Type II supernova.