I was reviewing the images I took for NGC 925, and I noticed a long smudge in my final stacked image. I decided to look through the original subframes individually, I noticed something moving! I have no idea what it is, but I know it cannot be a plane or artificial satellite, as each subframe was a five minute exposure, and those objects move faster enough to cross the frame in that time. I think I found an asteroid!
Here is a video of it moving relative to stars in the images:
