spherical solid object bright white hovering high up in clear sky then moving slowly out of sightIt was a clear blue sky with one jet flying from NW to SE leaving a contrail. As I looked up at the contrail from my outdoor work, I noticed a very bright object off to the right of the contrail at a due South location about 35 degrees up. I could see that it was a solid white object gleaming in the bright sunlight. It was not moving and was at very high altititude. It varied slightly in its brilliance, as if wobbling slightly toward a duller surface. I pointed it out to a co-worker who looked at it briefly. I watched it off an on for 5 minutes. Then it began to move slowly in a flat trajectory and after travelling the length of a finger held out faded away. So it could not have been Venus and seems it could not have been a balloon as it remained steady for 5 minutes before leaving slowly. A brief sound of motors could be heard somewhat like a jet helicopter just before its movement but I can't be sure it came from that object. I sure wanted binoculars at that point but only had a keen naked eye observation. At times the edge of the extreme object seemed to have a slight reddish glow.