On November 7, 2019, an earthquake with moment magnitude of 5.9 occurred in east Azerbaijan province, Iran (Torkmanchay earthquake). In this study, to estimate source parameters and rupture characteristics of the earthquake, the stochastic finite-fault (SFF) technique was used for strong ground motion simulation, then the observed records and the simulated graphs, were compared. The size of the asperity in this earthquake was about 7km in strike direction and 7 km in dip direction. The estimated fault plane solution shows strike-slip faulting. Strike, dip and rake of causative fault were determined as 216, 74 and -4 degrees. In addition, the stress drop in this event was calculated to be about 5 bars.