Flight time of 5 minute visual with 37 sec video capture

Single solid white light seen high above all aircraft did not emit any flash of light nor con trail behind it. Light did emit a coned shape plume of light as a short tail. Flying east bound from above Las Vegas. Moved at the same speed of aircraft in the area. Did not stand still during flight light a comet would appear. Light did not burn out and was to slow for a meteorite. Filmed above building to show distance and speed of travel.