What do you think about this photo. What is this?

- a Meteor?
- a Iridium Flare?
- a UFO?

I observing the sky during taking photos except short times, when I setting camera, so
I don't saw this phenomenom by naked eye (so this phenomenom vas very fast). I don't saw a path of a bright artificial satellite at 12:44 am LMT...

Klick to enlarge July 27 at 12:44 am LMT = July 26, 10:44 pm UT; F/2.7; 30'' ISO-400 (camera Sony H9 with tripod)