whilst imaging M20 on Thursday Night and while processing I noticed a small streak on the bottom of the image turns out it was Asteroid (40) harmonia it lies 187.2 million klm from earth and has a diameter of 108 klm big chunk of rock
I have made a crude GIF its only tiny in the image but I have placed an arrow to mark its path thanks for looking
cheers Pete
http://makeagif.com/i/BGxXNS