I call your attention to the first part of the list of conjunctions of Comet C/2010 X1 with bright galaxies to mag. 12. The first part is dedicated to events prior to conjunction of the comet with the Sun when we will only be able to observe it on images from space observatories watching the Sun. In the list bright galaxies at a distance up to 20 arc minutes from the comet are shown.
April 17 with NGC 3423 (7 angular minutes)
July 8 with NGC 3423 (6 angular minutes)