The zoom feature on the camera that took this video could be distorting the shape of a plane, but the voices in the background suggest that witnesses were seeing something they found unusual. To the naked eye, a plane probably would have been obvious. In addition, the glow on the object is quite consistent. If it was a plane, as the angle changed, the glow of the sun on the fuselage would have moved, but it doesn't. Therefore the object may well be emitting the glow itself. This is a possible unknown.