is another transitional state, when an inflection in the light curve can be seen (§\[res:nick\]). Hence the plateau duration is precisely the time span between the secondary peak and the inflection. The inflection ($t_{i}$) in the $V$ band light curve is observed to occur nearly 103.2 days after the shock breakout. Hence the time interval between the $t_{i}$ and $t_{p}$ is assumed as the duration of the plateau i.e. $(103.2-5.3) \sim 98$ days.

Once the hydrogen envelope is fully recombined and the ejecta becomes optically thin, the light curve enters into the nebular phase and it is sustained mainly by the energy output from the radioactive decays of the iron-group elements. During the plateau to nebular transition phase, the $V$-band magnitude drops from $\sim$ 16.0 mag at around +90d (still in the plateau) to 18.1 mag at +122d (in the exponential light curve tail), i.e. $\sim$ 2 mag in about one month. This drop is remarkably smaller than that of SN 2005cs, but consistent with the 2-3 mag drop observed in normal Type IIP SNe [@olivares10]. A linear fit to the tail from +120d to +400d gives the following decline rates \[in mag (100d)$^{-1}$\]: $\gamma_B~\sim~0.44$, $\gamma_V~\sim~0.84$, $\gamma_R~\sim~0.91$, $\gamma_I~\sim~1.03$ at $B, 