Starship Asterisk*

Thanks, neufer, for the wikipedia entry, but it's irrelevant. I asked if the dots were moons, and if so, could they be identified. I didn't ask how many moons Saturn had, or whether Rhea might have rings of its own. So the question still stands. (To sort of answer my own question, presumably the dot...

The topmost (2009) image shows a small dot to the right of Saturn, in the ring plane. The next (2008) image also shows a dot to Saturn's right, but apparently below the ring plane. Are these Saturnian moons, artifacts, or coincidental background objects? If they're moons, does anyone know which ones?