I was getting my first view of the Orion nebula (i think) when this very tiny object which looked like a faint star went zooming past. It took about 5 seconds to go across my FOV. I was using an 8" reflector at x48. It freaked me out a bit I've seen satellites before with the naked eye, but this was so far away and moving so fast. A comet? An Imperial-class Star Destroyer Any ideas?
I didn't find the right solution from the Internet.
My guess would be a satellite. We usually see several on observing nights and they are always a lot of fun. They usually move much faster and are fairly bright so it might have been a small piece of space debris moving along with the Earth's rotation so it looked slow.
But, given the lack of additional evidence, go for the Imperial Star Destroyer ;-)