It was early morning and clear. No clouds were visible. I was up because I couldn't sleep and went out on my deck to get some air. As always I looked up to see the stars. I saw a white light moving high in the sky from the NW and thought it was an aircraft. As it got closer I noticed no flashing beacons, no running lights and no noise. The shape was a triangle and there was a bright white light on each corner. It few from NW to SE along a straight line and rotated counter clockwise as it flew. The entire sighting lasted approximately 10 seconds. I could not determine the altitude or speed but will guess at approximately 500ft. After the sighting my first thought was of my camera on the counter but if I had gone in to get it I would have missed it. The object went behind the trees in my yard and that is when I lost sight of it. This is not my first sighting but it is the first I have reported. (previous sighting I will discuss but only in person, not on line or over the phone). As a side note I am retired from the US Navy having spent 22 years in Naval Aviation and this was not an aircraft or anything in our inventory.