So I saw these UFOs, on the way to Pluto

Here are a couple of shots from the long range camera on the New Horizons probe, nearing Pluto.

Notice the light that moves from the upper right (at about 1:00 O'clock) in the 07:17 picture, to the center of the frame in the 07:27 picture.  Something also shows up in the bottom right of the second frame that wasn't in the first.

Probably just camera artifacts, but still interesting for SF readers.