Stretched échelle diagram of KIC 7458743. Filled blue circles show the observed mode frequencies. Open red circles show asymptotic mixed mode frequencies including rotation and magnetic field effects, assuming that the observed ridges correspond to m = ±1 components. The core rotation was determined to ensure a crossing of the ridges at ν_cross = 150 μHz, and magnetic field properties were adjusted to reproduce the m = −1 ridge (see Sect. 3.1).