OK, after studying the star charts provided by Rob. It looks like this might be Pluto marked by the yellow lines. The blue shaded stars are the same stars that Rob shaded on the star chart.
Can someone confirm my analysis and either say "Yep that's it" or "Mate, you're nuts to even think that's Pluto.
For the record, this image is a stack of 46 x 8 sec images using a DSI Pro on a 200 mm F6 Newt.
Excuse the ordinary background but I don't take flats and I let Iris take a best guess at removing the sky glow.
