Panels A: images of P/2016 G1 between UT 2016 March 7 and July 4. All the images are scaled to be 6 × 10⁴ km on a side. The Earth crossed the orbital plane of the object on April 13, so images around that date show the coma extension above and below the plane. Panels B: images of P/2016 G1 processed with unsharp masking to enhance the three clumps and the details near the disintegrating body. Each image is 1.5 × 10⁴ km on a side. Panels C: contour plots on three dates showing the expansion of the southern arc and the eastern linear feature (highlighted with red lines). Each panel is 30″ × 20″. The panel widths and pixel scales are: April 3 (34 000 km, 227 km), April 14 (32 000 km, 231 km), and May 12 (29 000 km, 193 km). North is up, east is left. The Sun and velocity vectors are listed in Table A.1.