Continuum flux ratios between the components vs. wavelength. The dotted lines are calculated from synthetic continuum spectra with T_eff1 of 8700 K and T_eff2 of 3800–5000 K. The best agreement with the flux ratio from photometry (red line) is obtained for T_eff2 = 4400 K (black solid line). The upper green line represents T_eff1 = 9000 K, T_eff2 = 4500 K, the lower green line for T_eff1 = 8400 K, T_eff2 = 4300 K.