Set the map filter to Outbreak, ensure there are no population filters active.
Centre up with Sirius, then zoom out a bit, and head directly away from the core (along the galactic line). There's 4-5 about 80-100ly from there.
It's where I found mine.
May need to zoom out more, or raise or lower the cursor to see.
Can't remember the name, sorry!
But it was a tiny but spread out system.
2 close orbiting stars, and a single planet with an outpost 20,000ls away.
All I did was fly directly 'up' (away from everything), for about 2000ls, then flew towards the outpost fairly slowly until I found a high grade USS.
Remember to take limpets and a controller, and clear space in your inventory!
Good luck!