(a) Synchrones and syndynes of the T2 coma on UT 2021 June 26.2. The dashed lines are synchrones, indicating the locations of dust ejected at different times prior to the observation: 180, 120, 90, 60, 45, 30, 15, and 5 days from right to left. The solid curves are syndynes, where each has a constant β varying from 10⁻⁴ (low-mobility dust) to 1 (high-mobility dust) anticlockwise from the rightmost. A close-up image is given on the bottom right. (b) Same as T2 in panel a but with an image magnified five times.