I contacted Professor Abraham (Avi) Loeb at Harvard University on a whim who is the head of the Frank B. In other words there is movement evident while it’s visible.
In every case you can see a trajectory for the object. The first two are Iridium flares and the rest are of other satellites. Of course, this doesn’t mean that it couldn’t be a satellite that isn’t in the NORAD element files used by Stellarium or a piece of space junk. Other times though, there is no known satellite near the location of the flash. In some cases I find a match (usually an Iridium satellite) for the flash confirming that it was a satellite that caused it.
When I record a flash I always check on Stellarium (planetarium software) to see if there were any known satellites at the spot of the flash during the time recorded. This would imply that they are most likely satellites or space junk. Usually they are seen during clear nights. These flashes only occur once during the recordings. This is to ensure that when I record a flash, I give the recording long enough to record any subsequent strobe flashes from the airplane, if that’s what it is that I’m capturing. I’ve purposely setup my capture software to record 30 head frames and 120 tail frames. Over the years I’ve recorded many “single flashes of light” that are NOT airplanes. For a number of years now I have been using a Watec 902H low light CCTV camera for monitoring lightning related phenomena.
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