related discussion here: https://www.reddit.com/r/SanJose/comments/1cyk3ca/completely...
Possibly a meteor. Fast moving, straight line, bright at first then dimming rapidly.
An aside, but wouldn't 9:04pm-9:06pm +/- 1 min just be easier expressed as 9:03 - 9:07pm?
I am not saying that was an UFO, but ...
That was Starlink. The satellite tracking app I have predicted it pretty much perfectly. There was a launch out of Vandenberg early Wednesday, just after midnight. My guess is that it was so bright because the satellites haven't really started dispersing yet.