  Temporal analysis of INTEGRAL/IBIS data has revealed a 5.7195\pm0.0007 day
periodicity in the supergiant fast X-ray transient (SFXT) source AX
J1845.0-0433, which we interpret as the orbital period of the system. The
new-found knowledge of the orbital period is utilised to investigate the
geometry of the system by means of estimating an upper limit for the size of
the supergiant (<27 R_{\sun}) as well as the eccentricity of the orbit
(\epsilon<0.37).
