An astrometric and photometric study of the young open cluster NGC 2168 and its possible member [NBN2015]77

We present an astrometric and photometric study of the young open star cluster NGC 2168 its proposed member [NBN2015]77. was investigated by combining data from both Gaia-ESO DR2 2MASS databases. The analysis light curve modeling W UMa [NBN2015] 77 in V R bands performed using Wilson-Devinney (W-D) program. cluster's main parameters: distance, color excess, age ared=862±67pc, E(B−V)=0.290±0.049, 126 Myr, respectively. Our results show that system is a UMA eclipsing binary A-subtype, with low mass ratio 0.231±0.023, two components are spectral types A7 A9. physical parameters were estimated. Using independent means we discuss membership find background field not 2168.