SEEN IN BROAD DAYLIGHT- large craft that looked like two pie plates facing each other with a short cylinder in between, yellow and orange...

I was sitting in history class in the eighth grade (four years ago) when I happened to glance out the window and see a large object about 50 yards in diameter floating over my neighborhood in the northwestern suburbs of Austin. It looked to be about half a mile away and moving slowly at a speed of 20 to 30 mph. It was only about 50 feet off the ground so I know that others must have seen it as well. The top and bottom pie plate-shaped portions of the craft were orange and the center cylindrical portion was yellow. I don't think it was metallic because I couldn't see any kind of a shine (and the sun was very bright at the time with no cloud cover at all). I blinked a few times to make sure I wasn't seeing things and then turned to one of my classmates to see if I could get another witness. When I turned back to look out the window 2 seconds later the object had completely vanished.