New CCD photometry of the eclipsing binary system V1067 Her

• New CCD photometric analyses of the W UMa type binary V1067 Her were performed.
• The spectral type of the two components was found to be K2 and K4.
• The system was found to be as A-subtype with fill-out factor of about 16%.
• The evolution status was performed according to ZAMS and TAMS tracks.
• The (O-C) residual diagram method and period variation was illustrated.

We present a new set of CCD photometric observations for the short period eclipsing binary 1SWASP J1743 (= V1067 Her). We have determined the available times of light minima and two new linear and quadratic ephemerides have been obtained. The photometric solutions for the system have been performed using Wilson and Devinney Code. The 3D and fill out configuration revealed that V1067 Her is an over contact W UMa binary with relatively low fill-out factor of about 16%.We investigated the period variation for the system. It showed a strong evidence of period changes by using the (O-C) residual diagram method and we have concluded long-term orbital period decrease rate dP/dt= −3.0 × 10−7 d/yr, corresponding to a time scale 8.6 × 105 yr. Such period decrease in the A-type W UMa systems is usually interpreted to be due to mass transfer from the more to the less massive component.