The object should appear in at least 4 frames to be considered real. The form for reporting comets is at the bottom of this page. There are a variety of common mistakes which inexperienced observers make. To see what others have reported, please see the recent reports page . Below see descriptions of the common mistakes.
Planets can move to the left or to the right.
Frequently, but not always, the planets saturate the CCD, causing a bleeding of pixels along a single row. Checking any ephemeris program will tell you which planets are near the Sun. The debris may be dust or spacecraft insulation which has flaked off. Of interest to lots of astronomers, but mostly just noise for us. We see lots of them.