Photometry of OV Bootis at the Early Stage of 2017 Outburst

We report our photometric observational results during the early stage of 2017 outburst of an ultra short orbital period cataclysmic variable star OV Bootis. From the obtained light curve, its period of the hump-like modulation is quite close to its orbital one This result suggests us that this variable star is thought to be neither WZ Sge-type nor SU UMa-type dwarf nova ,taking into account the absence of rebrightening.