The first light curve analysis of eclipsing binary NR Cam

• We carried out new observations and plotted light curves in BVR filters.
• We determined new ephemeris for primary minimum of NR Cam.
• The first analysis of the light curve of the eclipsing binary star NR Cam was made.
• We determined some geometrical and physical parameters.
• The O’Connell effect has studied over the past 14 years.

New observations of the eclipsing binary system NR Cam were carried out using a CCD in B, V, and R filters and new times of light minimum and new ephemeris were obtained. The B, V, and R light curves were analyzed using both the Binary Maker 3.0 and PHOEBE 0.31 programs to determine some geometrical and physical parameters of the system. These results show that NR Cam is an overcontact binary and that both components are Main Sequence stars. The O’Connell effect on NR Cam was studied and some variations in spot parameters were obtained over the different years.