A contact eclipsing binary with a 9.6-hour orbital period showing continuous light variation.
V0695 Her was observed to refine the orbital ephemeris and investigate potential period changes in this W Ursae Majoris-type contact binary. Three complete orbital cycles were captured in a single night under photometric conditions, revealing the characteristic ellipsoidal light curve with nearly equal primary and secondary minima. The O-C analysis suggests a slowly decreasing period consistent with angular momentum loss via magnetic braking, in agreement with recent literature.
Technical Details
Designation V0695 Her
Type Eclipsing Binary (W UMa)
Constellation Hercules
Magnitude Range 11.2 - 11.8
Period 0.40056 days
Epoch 2460455.3780
R.A. 17h 22m 14.8s
Dec. +33d 08m 41s
Spectral Type G2V
Discoverer Hipparcos, 1997