Context of 9–10 April 2016. Left, inset: position of the Imhotep depression (in pink) with respect to the comet large lobe (LL) and small lobe (SL) main: cylindrical projection centered on the Cheops boulder (gold square) of the Imhotep region, see main text for more details. Right: curves of the median distance to the surface and median phase angle around the moment of closest approach during the flyby. The uncertainties correspond to the standard deviation of the values across each observation.