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I said: Of course, the figures on the left are hours and minutes.  If we were sure there wasn't too much missing between the ends we could find the period and hence the orbital height and speed.  Knowing the tilt as well, about 31 degrees, we might be able to identify which satellite we were supposed to be observing. 

The only problem with that theory is that at around one hour 18 minutes orbit we'd need to start looking for a satellite orbiting about 350km below the Earth's surface.  Might there be a correction for Earth rotation built in to the figures?  The stars are too far away for it to matter, but the satellite won't be.  Come on you mathematicians; it's time to help out.  DaveP