Spectral variability along the orbit illustrated by a) the cut-off power-law normalization at 1 keV, b) the intrinsic hydrogen column density, c) the soft excess blackbody luminosity, assuming a distance of 8 kpc, d) the iron line flux, e) the iron line equivalent width calculated for the unabsorbed continuum, and f) the unabsorbed flux. Dashed vertical lines indicate the eclipse boundary.