Electronic structure and rovibrational calculation of the low-lying states of the RbYb molecule

► Potential energy curves of 29 electronic states of YbRb molecule are calculated. ► We investigated the spectroscopic constants Te, Re, ωe, Be. ► The rovibrational constants Ev, Bv, Dv, Rmin, and Rmax have been calculated. ► We studied 26 new electronic states for the first time.