Scott, meteors do not follow the sort of trajectory this object does. Never have.
after the flash it changes direction and accelerates within seconds to a speed of 400 km/sec!
I did find something from your link that I found interesting:
I have not been able to determine from the tape just how far away from the Shuttle the main object was.
This means, of course, that any guess as to the object's velocity would be just that: a guess.
Nice try though.