Single point of light covering 1/5th of clear sky south to north then reversing retracing path with side flashes.

Single point of light traveling south to north, slightly east of directly overhead.  Appeared as a star but moving fast enough to cover 1/5th of sky in 3-5 min.  Traveled from region of Sirius toward Ursa Major passing through the bottom of the cup of Ursa toward Polaris.   Stopped two finger widths beyond Ursa, then reversed direction, appearing to follow the same path back, until it disappeared.  
Immediately after passing overhead moving south, several streaks of light flashed east and west in shallow angles perpendicular to the object's path.