There is a mountain range right under where I saw this. Also not too far from Dugway proving grounds and a few miles from Hill Air Force Base. Not sure if it could be space debris or something launched from ground or even a teen with a flare gun. (I would think flares would last longer. I leave identifying to the experts)
40° 23' 12.37'' N (40.38677°)
111° 50' 0.74'' W (-111.833538°)
Time and Duration
Local Date & Time
2017-11-09 05:40 MST
UT Date & Time
2017-11-09 12:40 UT
From up left to down right
Brightness and color
It was early morning and dark so I only saw a faint glow. Could have just been after image.
The ball kind of flickered. As I would expect from something burning up quickly. It got brighter for a fraction of a second, then dimmed out. But it did not disappear immediately after getting brighter. Of course this whole thing lasted maybe 2 seconds.
Appeared that it was breaking apart. Small pieces falling off in the trail.