re: Different magnitudes
That'd be hard to tell in the seeing conditions I have to put up with. I'm fairly certain I didn't catch the whole event, either... I looked away, then looked back and there were two additional bright object where only Jupiter had been before.
Based on previous satellite sightings, I may have missed 5 to 10 seconds of the apparition, if not more.
I'm privately rooting for Envirosat to have been one of them... the track projection at Heavens Above is right on the money, except for the time.