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Kawabata, Masaomi Tanaka, Masayuki Yamanaka, Michitoshi Yoshida, Miho Kawabata, Ryosuke Itoh, Satoshi Honda, Yuki Moritani","submitted_at":"2014-01-21T03:12:15Z","abstract_excerpt":"We report photometric and spectroscopic observations of the nearby Type Ia Supernova (SN Ia) 2012ht from $-15.8$ days to $+49.1$ days after $B$-band maximum. The decline rate of the light curve is $\\Delta m_{15}$($B$)$=1.39~\\pm~0.05$ mag, which is intermediate between normal and subluminous SNe Ia, and similar to that of the `transitional' Type Ia SN 2004eo.\n  The spectral line profiles also closely resemble those of SN 2004eo. We were able to observe SN 2012ht at very early phase, when it was still rising and was about three magnitudes fainter than at the peak. 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