Anything that's straight up/down/left/right or on a direct path to somewhere has been mapped out. 860LY is nothing - that's only around 30 jumps - you can do that in an evening. (I've just come back from the Orion nebula in a day without rushing).
You need to get further out, and well away from a "logical" direction, and you'll start picking up undiscovereds. Even if they are, take an advanced scanner, and check the system map before moving on. I found an earth-like and two water worlds in systems which someone had raced through and not scanned anything but the initial star.
Mhhh, now I'm 400 ly up and north from sol and nothing is named. I think that direction has more to do that distance. If point toward turistic attraction like pleiades and orion cluster you need to go past them. If you aim specific systems out of main routes you can name system on the edge of civilized space. And I'm not talking of M class with icy planets left over from somebody else. Only yesterday, at that distance, i named several water worlds.