Pleione 4, to my understanding, used to have two moons and a crashed Thargoid ship on the second moon, in the previous Elite game. It now has no moons but two rings... Admittedly, I have no idea if it had rings in the older Elite or not, but if it didn't.... Hmmm...
I have searched quite a bit on Pleione 4 (and in it's B-ring, before Horizons), but so far come up blank.
That's because you were actually looking for Ceti Alpha VI.... I'm afraid that isn't the case:
[video=youtube_share;Uhu5V8VRxFU]http://youtu.be/Uhu5V8VRxFU[/video]