Here’s an OSIRIS narrow-angle camera image taken on 3 July 2016, when the Rosetta Mission was 9.1 km from Comet 67P/Churyumov-Gerasimenko. The scale is 0.16 m/pixel and the image measures about 320 m across. See http://www.esa.int/spaceinimages/Images/2016/07/Comet_on_3_July_2016_OSIRIS_narrow-angle_camera
