In an attempt to improve the signal to noise ratio on the image and hopefully see more detail, I overlaid the three good images so that the signals would add and some of the noise would average out.
This allowed me to brighten the dark area a bit and then I did some digital signal noise reduction on it to try to further see details in the noise.
A couple of things became apparent; the UFO hadn’t moved AT ALL between the three images, they lined up exactly, when the background lined up, so did the UFO.
Second, with the background slightly less noisy I could see some dark details. As I brought the brightness up slightly, it looks to me like that object just might be the roof of an A-frame house or building. It is barely discernible, so much so that I can’t be sure, but I think I’m seeing a building there.
So this might be just a metallic roof on a building that happened to be at just the right angle to reflect sunlight back at me and not so interesting after all.