I have an app on my iPhone that does the same thing. Sadly, I haven't had the opportunity to see it lately. (Wrong place, wrong time, too busy, too cloudy etc...)
For all things skyward. The visible passes are listed by location, including brightness.
If you have a mind to, check out an iridium flare. They are, I think, the iridium coated solar panels of our GPS satellites catching the sun... impressive
