2011CBET.2952....2K

E. Kankare and S. Mattila, Tuorla Observatory, University of Turku; D. Wright and M. Fraser, Queen's University, Belfast; and S. Valenti and A. Pastorello, Istituto Nazionale di Astrofisica, Osservatorio Astronomico di Padova, report that a spectrum of PSN J16171887+5919298 = SN 2011jg was obtained on Dec. 19.3 UT with the Nordic Optical Telescope (+ ALFOSC; range 320-910 nm, resolution 1.6 nm) and with the William Herschel Telescope (+ ISIS; range 300-975nm, resolution 1.2 nm). Cross-correlation with a library of supernova spectra using the "Supernova Identification" code (SNID; Blondin and Tonry 2007, Ap.J. 666, 1024) suggests that SN 2011jg is a type-IIb supernova showing similarity with SN 2000H at roughly 10 days after peak. The authors further report that an image obtained with the NOT on Dec. 19 provides an R-band magnitude of about 17.8, corresponding to an absolute magnitude of about -16.3 for SN 2011jg, assuming a distance of 65 Mpc (H_o = 70 km/s/Mpc) for the host galaxy, UGC 10331 (Theureau et al. 1998, A.Ap. Suppl. 130, 333).