2011CBET.2759....2P

J. L. Prieto, Carnegie Observatories, reports that a spectrogram (range 380-920 nm; resolution 0.7 nm) of PSN J03370500-0501560 = SN 2011dx was obtained on July 3 UT with WFCCD mounted on the du Pont 2.5-m telescope at Las Campanas Observatory. The SNID cross-correlation software (Blondin and Tonry 2007, Ap.J. 666, 1024) was used to aid identification and age/redshift estimation. PSN J03370500-0501560 is an old type-Ia supernova. The best template fit to the spectrum is the peculiar supernova 2000cx at 1 month after maximum light; however, there are also good fits using supernova- 1991T-like spectra at similar epochs.