Fig. 1
OSIRIS NAC image taken on 22 October 2014, 01h17m12s UT. The dust coma is resolved in single particles of subpixel apparent sizes, visible as tracks due to proper and spacecraft motion during the exposure time of 5.7 s. Some tracks show a periodic brightness variation during the exposure. The light curves of tracks marked by labels a and b are shown in Fig. 2.
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