The apsidal motion and O-C plot of V2815 Orion Algol Binary Stars

The initial photometric light curve investigation was focused on the eccentric orbit eclipsing binary V2815 Orion, which was recently discovered. The light curves for the B, V, and R systems were identified, and new minimum times (TOM) were calculated. The analysis was conducted with the aid of the Wilson-Devinney (W-D) program. The mass-luminosity relationship for main sequence stars was employed to determine the absolute parameter. Apsidal motion elements were calculated, and the O-C plot of V2815 Ori was assessed using all legitimate minimum timings. In order to ascertain the apsidal motion parameters (U, Ps, ω0, ω), as well as the variation in the apsidal motion period, we analyze the rate of variation over time (dP/dt), orbital characteristics of the third stars (A3, M3, f(m3), P3), and light curves from the O-C graphs.