Blinking lights, erratic movement, very far away

I was lying in bed, facing the window, when I saw something that looked like a star or a plane or satellite.
I realized it wasn't any of those when I realized that it was blinking blue green and white.  It was also moving erratically, but it didn't move too far away from where I first saw it.
After what felt like three minutes, it appeared to fade away, however it just disappeared behind a cloud.
It kept moving and blinking until it dimmed and disappeared.