Supernova 1989E in MCG +5-32-45

Gaskell and Koratkar also write: "CCD spectra taken with the 2.4-m telescope at MDM Observatory on Mar. 5 confirm that this object is a supernova. The supernova is superimposed on a large H II region. The V magnitude (calculated from the spectra) is 19.3 +/- 0.15. The spectrum is closest to that of a type-Ib supernova, 7 or 8 weeks after maximum light. The strong 680-nm absorption of type-Ia supernovae is absent, but the weak 610-nm absorption feature is weakly present. The redshift of the host galaxy is 7900 km/s."