K2 data wrapped according to a period of 5.015 d. Data are color-coded according to date to better display points thatwere taken close in time. Upper left panel: entire K2 data wrapped, showing the phase twice to aid the eye. Upper right panel: zoom in on the “out-of-eclipse” part of the K2 data (colored points, selected via σ-clipping), together with the average and standard deviation in 10 intervals in phase space (black points; the errorbars correspond to the standard deviation within each bin) and an interpolation curve to trace the shape of the variations. Bottom panel: full K2 data plotted against mission day, together with interpolated modulation curve of top-right panel, to show how the phase of the eclipses drifts at certain times during the observation campaign, although 5 d periodicity remains visible throughout the full dataset.