I was in my backyard doing some light watering in my veggie garden bed. I was facing west/northwest and I looked up into the sky directly above my head. To my amazement I saw a bright white object hovering in the sky, very high. It was not moving much so it wasn't a plane. It could not have been a bird, it was up very high and it wasn't circling the way predatory birds do. It just continued to hover over the area, it seemed to be turning slightly but not moving much. Then after a few minutes it slowly began to move toward the mountains in a northwesterly direction. I kept watching it until it finally moved away from view. There was no sound, no flashing lights, no contrail of course. It was not floating.I felt like it was doing some observation, got what it needed and left.