SIGHTING REPORT UFO sighting at Clear Night Sky

I am an engineer but I could not estamate size or altitude of the object only it was extreamly bright ball like to the naked eye but I would have a guess that it may have been around 1500ft when it passed directly over us without sound or navigation lights I have worked around all kinds of aircratfed but have never seen anything like this.

When the object passed over the house coming from a weston direction in a straight controlled slow speed toward the eastern sky it almost seemed to change in appearence it shrank in size changed in colour and completely dissapered in a clear night sky I am completely out of any logical answers for this object and hope someone may have an answer for this.

My daughter was with me when we went to the front of the house to watch it vanish and she tugged me on the arm and said you should have had your camera on you dad,but on the second night the same object traveling slower and lower roughly in the same direction about 20mins later than on the first night,this time I quickly grabbed my camera and took 3 pics of this thing although when looked at on the camera I can only make out a bright object even when it zooms in on the camera so I am going to get them enlarged when I get them developed so I maybe able to see some detail.