Context : Aims : Period analysis of CCD photometry of V1493 Aql ( Nova Aql 1999 no . 1 ) performed during 12 nights through I and R filters a few weeks after maximum is presented . Methods : The PDM method for period analysis ( Stellingwerf 1978 ) is used . Results : The photometric data is modulated with a period of 0.156 \pm 0.001 d. Following the sinusoidal shape of the phased light curve , we interpret this periodicity as possibly orbital in nature and that is consistent with a cataclysmic variable above the period gap . Conclusions :