June 5, 2012 11:40 PM
At around 11:40pm I wandered outside to smoke a cigarette with my father and happened to notice what appeared to be an out of place star in the northern sky. We've been doing quite a bit of telescope sky watching lately and generally know the night sky quite well so we were intrigued. We continued to observe it and noticed that it was moving west to east in a strangely rhythmic manner. It slowed down and sped up, repeating this every 2-3 seconds until it was finally out of sight around 5 minutes later.