Apsidal Motion Study of the Eclipsing Binary Star V459 Cas

Photometric observation of the eccentric eclipsing binary V459 Cas (e = 0.0244) was performed to find a new rate of apsidal motion. Also the advance of the periastron is calculated theoretically by taking into account the Newtonian (classical) and general-relativistic effects according to physical and orbital parameters of the system. A new observed rate of apsidal motion of 19^∘.8/100 yr is computed which is not in agreement with the one reported earlier. Meanwhile a theoretical value of 2^∘.64/100 yr is obtained which is 7.49 times smaller than the observed one.