2004IAUC.8415....2M

M. Modjaz, P. Challis, and R. Kirshner, Harvard-Smithsonian Center for Astrophysics, report that a spectrum (range 350-740 nm) of SN 2004er (cf. IAUC 8412), obtained by M. Calkins on Oct. 5.40 UT with the Mt. Hopkins 1.5-m telescope (+ FAST spectrograph), shows it to be a type-II supernova. The spectrum consists of a blue continuum and P-Cyg lines of hydrogen and helium. Adopting the NASA/IPAC Extragalactic Database recession velocity of 4411 km/s for the host galaxy, the expansion velocity derived from the minimum of the H_beta line is about 12000 km/s.