UFO Sighting in Oshawa, Ontario on July 4th 2015 – Glowed white then changed to copper colour, looked like star, moving then disappeared.

First seen white light object slowly moving in a straight line from a sout to north west direction. It changed colour to a copper like light. It appeared to ascend in to an outer orbit then disappeared into the night sky. It looked like it travelled in a direction away from the planet. It was a quiet evening when this UFO was observed. No other aircraft was observed in the area until approximately 20 minutes later. The event from when I first saw the light to when it disappeared lasted no longer than 10 minutes. There was no obvious noise. The object was round, star like.