The figure shows the light curve of the object (red point) and the temporal variation of the polarization degree (blue point) in V band. The object had recently faded, and the polarization degree in V band rose. The polarization degree reached about 35 %.
We performed photometric observations of peculiar Type Ia SN 2009dc. The preliminary results show that the brightness of SN 2009dc is still rising! We will continue more dense observations.