Nice! I thought I found my holy grail today, jumping into a non-sequence that showed a black hole. I arrived at the black hole and honked. 14 objects. I pull up the system map and get this...
I might need to run some maintenance on the Adv Scanner. If those are a system of little black holes, that'll be a blast to try to navigate through. The gravity lensing should be incredible. I'm about to honk again, and if they're still black holes, I'm going in.
Wish me luck!
UPDATE: The subsequent honking still showed the planetary bodies as black. It was a Class I gas giant. I guess the lack of a star meant they were jet black. Just about ran into the dang thing. Had to use the backdrop of the Milky Way to see it. The moons were pitch black too.
Not the holy grail, but quite an interesting system!