2004IAUC.8275....2G

C. L. Gerardy, and G. H. Marion, University of Texas at Austin, report that a low-resolution optical spectrogram (resolution 600; range 430-700 nm) of SN 2004I (cf. IAUC 8272), obtained on Jan. 22.13 UT with the 2.7-m Harlan J. Smith Telescope (+ LCS spectrograph) at McDonald Observatory, shows it to be a type-II supernova. The spectrum resembles that of SN 1992H, 20 days after explosion (Filippenko 1997, ARAA 35, 309), with weak H_beta and He I 587.6-nm absorption features superimposed on a blue continuum, and a strong, broad H_alpha emission feature with little or no blue-shifted absorption component. Adopting the 8018 km/s redshift of NGC 1072 (from the NED), the expansion velocity of the blue edge of the H_alpha feature is about 8600 km/s.