An optical spectrum (range 360-920 nm) obtained with the Las Campanas 2.5-m du Pont telescope (+ WFCCD) on Sept. 14.2 UT by N. Morrell, Las Campanas Observatory, Carnegie Supernova Project; and Ismael Botti and Paula Lopez, Universidad de Chile, reveals that 2010hv is a type-II supernova, showing a blue continuum with the characteristic P-Cyg profiles in the Balmer lines and strong galactic contamination. A redshift of 7279 km/s (s.d. 13 km/s) is derived from an average of ten emission lines from the underlying H II region, superimposed on the supernova spectrum. Considering that redshift, the minimum of the H-beta absorption is blueshifted by 7400 km/s. Interstellar Na I absorption at the same redshift is observed with an E.W. of 0.08 nm. Cross-correlation with a library of supernova spectra using the Supernova Identification tool (Blondin and Tonry 2007, Ap.J. 666, 1024) suggests that this supernova is of subtype II-p with ages ranging from 15 to 40 days.

NOTE: These 'Central Bureau Electronic Telegrams' are sometimes superseded by text appearing later in the printed IAU Circulars.