Mmm, having tried a few comparisons and matching existing spectra I have no clue as to what this thing is!
I found some spectra of the Hyubusa 1 probe re-entry which actually had some similarities but were of much lower resolution.
Rather re-enforces my suspicion it might be space debris. However an allsky shot has been secured of what might be the same object. A nice bright greenish coloured fireball. So I’d wager most of these lines will be iron or magnesium, magnesium alloy’s are probably common in space frames I’d imagine.
Next plan is just a slog to try and match up library lines….