2011CBET.2669....2S

D. K. Sahu and Sonam Arora, Indian Institute of Astrophysics, Bangalore, report that a spectrum (wavelength range 350-750 nm) of PSN J11535103+3321463 = 2011ao was obtained on Mar. 5.99 UT with the Indian Astronomical Observatory's 2-m Himalayan Chandra Telescope (+ HFOSC). Using the SNID code of Blondin and Tonry (2007, Ap.J. 666, 1024), the spectrum of 2011ao is found to be that of a normal type-Ia supernova, with a best match that of SN 2003du at about a week before maximum light. The velocity corresponding to the minimum of the Si II 635.5-nm absorption feature is estimated as 16000 km/s.