That is a rarity indeed. I'd say for every 60 ELW's you find, 1 may well be a ringed ELWCongrats! I recently checked off one of my last "todo" items for exploration: first discovery of a RINGED Earth-like. Only one final exploration goal left on my plate: Raxxla.
Congrats Commander, I hope you find many more
Quite a hospitable system actually. Two terraforming candidates, two other worlds with native nitrogen/oxygen atmospheres (albeit a little on the chilly side), and a landable moon with 2.5% arsenic.