The position of the comet changes as it and Earth travel on their orbits through the solar system. The comet was approximately 0.68 AU (67 million miles or 100 million kilometers) from Earth at the time of these observations.
Data were provided through HST proposal 14474: D. Jewitt (UCLA), M. Mutchler (STScI), H. Weaver (JHU/APL), J. Agarwal (MPI), M.-T. Hui (UCLA), M. Ishiguro (Seoul National Univ.), J. Li (UCLA), and J. Kleyna, K. Meech, R. Wainscoat, and R. Weryk (Univ. Hawaii).
Several images of Comet 332P were made by HST's WFC3/UVIS instrument on three consecutive days with a single filter, F350LP. The exposures from each day were combined into a single image. Color was added to the combined grayscale images using a color mapping.