Sitting on deck, overcast skies, west side of house. Dark out, past sunset. Noticed object in Sky moving extremely rapidly from south to north. Bright color, flame orange, round/oval in shape, heading almost due north. Absolutely no sound. Under the cloud cover. Appeared larger than a jet plane. No blinking lights of any kind. Moved out of sight to the north. Not a plane, helicopter, satellite or shooting star - nothing like anything we've ever seen before.