Thw news.com.au article NASA spacecraft to fly over Australia during Earth Gravity Assist manoeuvre has some interesting graphics (shown below).
In the article is discussion of meteor cameras, and quotes from Professor Phil Bland of Curtin University in Western Australia, who:
is a member of the OSIRIS-REx science team and also leads an Australian group called the Desert Fireball Network, which, as he puts it, "tracks fireballs coming through the atmosphere.”
Question(s): How close will OSIRIS-REx get to Australia? Will it be bright enough to be seen by cameras used to record meteors? Is there any way quantitatively (gu)estimate the brightness as a sanity check here?
edit: I'll reiterate that. Can the satellite be be seen by cameras used to record meteors?
below: "NASA says the fly-by will also give researchers a unique opportunity to observe our home planet." From here. Source:Twitter