A long, opaque, cylinder shaped object moving slowly across the sky. It slowly disappeared after about a minute.

This cylinder shaped object was moving at the speed of a low hanging cloud (moving east toward the lake, coming from the direction of O’Hare Airport). It had no lights and was exposed by the city glow. I checked twitter or reddit to see if anyone else had spotted it but found nothing. Was sitting with a friend on a 3rd story deck when we saw it. Wasn’t scary, just bizarre. Moments after it disappeared, a bush plane flew by where it had been.