IAUC No. 6589 reports the discovery of a supernova by H.-J. Hagen and D. Reimers. The supernova was first detected on 1996 Apr. 11 with the Calar Alto 0.80-m Schmidt telescope for the Hamburg Quasar survey (B=14.7 +/- 0.5). The spectrum revealed SN 1997ab to be a member of the rare class of SNe II having Seyfert-1-like spectra. The object has declined less than 2 mag even after 11 months.
09h 51m 00s.4 (J2000.0) +20o 04' 24"
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