Rowena absolutely magic capture of a fireball
I took the liberty of studying it a bit - it appears to travel around 44º in length!!!!!! - starting up past Achernar there and down thru the goalposts - GOAL!!. It may even have pedigree and be from the Anthelion source, although it doesnt follow the 2.5x distance travelled rule properly.
I would think an iridium flare travels a lot slower than most meteors - at least the ones i have seen do,and look quite different, it definitley looks like a meteor to me in the pic.
A bolide is when the fireball or meteor ends in a much brighter terminal flash/explosion at a stationary point - and in some definitions that has to be accompanied by a sonic boom!!?. The ones I personally call bolides are the very bright flashes you see that have no meteor trail or meteor/cntral nucleus - but just appear with no warning as very bright bursts/exposions of light in the sky out of the blue, and light up the ground like a camera flash going off - sometimes they come in pairs and triples - I used to see a lot more of those type than i do now. I read once that these type are big meteors that are too big and at the wrong angle to sneak thru and penetrate the atmosphere and they explode on first contact with the dense atmosphere of earth at the edge of space - sometimes releasing the energy of an atomic bomb.
Kearn