The only Nomad-controlled systems are the two "Unknown" systems. These can only be reached via Omicron Alpha and Omicron Gamma.

I know about those, buT I heard someone remark about an extremely obcsucre hidden JH in sig-17.

Interesting, i've never heard about that. And they dont show it on Fl-datastorm.

If you want to find all the jump holes, use Ioncross Char editer and click the tab, Show all map, and it will show every jump hole and wreck marked on the maps.

I'm guessing its just a rumor or hoax, or that its 2000 km below the horizontal plain or something. Probably the former.

Well I didnt use datastorm becouse it dosent show all the details but I found a "Unknown Object" in left side of B2. But its a van buoy dont know whats it doing there maybe its like a clue or somthing.

Hmmmm, I wonder.

Perhaps it's Atmosphereum

Some people are like slinkies. They don't do anything, but you can't help but smile as they tumble down the stairs.

In the Evolutions mod, there is a Nomad Jump Gate in sig-19, maybe your friend got it confused.

For me even without mods there is a Nomad Jumpgate in Sigma-17 or 19 I forget,but halfway through the jump phase the game crashes and puts you at your desktop.

Hmmm, Interesting.

A quick look through the INIs revealed there's no jumpgates or holes to Nomad systems in Sigma-17. There's a hole each to Sigma-13 and Omicron Theta, a hole to Sigma-19 as well as a gate to it.

In Sigma-19, there are jumpholes to Honshu, Sigma-17, Omicron Beta, Sigma-13 as well as gates to Honshu and Sigma-17. Nothing that leads to a Nomad system either.

For me, any sighting of a hole or gate to Nomad systems in any system except Omicron Alpha and Gamma looks like some leftovers from a mod not completely uninstalled by FLMM.