I saw that light too when flying northbound south of Paris!
The most brilliant "shooting star I ever saw!
I'm happy to know it could be a space debris.
If you have a laptop and fly regurally at night, I could recommend you a software called "Redshift 4".(I think there is an update 5 now)
That soft allows you to choose your position to look to the sky (even your altitude!) . Quite funny to name those stars you see every night and get a lot of infos about them. Our a/c are so reliable these days.........
