Comet Garradd Moving Past a Star in Ursa Minor in the 21 inch Swanson Comet Section, Deep Sky Section, Doug's Sky Notes, Observer's Log Add comments Mar 232012 Comet Garradd moving past a star in Ursa Minor using the 21 inch Swanson March 6, 2012. Leave a Reply Cancel reply You must be logged in to post a comment.