Apsidal motion in eccentric eclipsing binaries: V871 Aql, V345 Lac, V401 Lac and CR Sct
About thirty new times of minimum light recorded with photoelectric orCCD photometers were obtained for several little studied eccentric-orbiteclipsing binaries V871 Aql (P=3.0°, e=0.13), V345 Lac ( 7.5°,0.46), V401 Lac ( 2.0°, 0.16) and CR Sct ( 4.2°, 0.09). TheirO-C diagrams were analyzed using all reliable timings found in theliterature and in all cases an apsidal motion was either discovered orconfirmed. The new values for the elements of the apsidal motion werederived. We find periods of apsidal motion of about 255, 7000, 79.4 and4400 years for V871 Aql, V345 Lac, V401 Lac and CR Sct, respectively.Partly based on photoelectric observations secured at the HvarObservatory, Zagreb University, Croatia.
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