Omicron Major is the only system that has that issue. For any other system, you can just move to the very corner of the map and you're fine. Omicron Major however has the Dyson Sphere wall on the plane, and the survey-able area ends after a little bit beyond the end of the atmosphere - since you can only survey on-plane. The only other system where you shouldn't survey at all is Planet Darlington, since when you stray away from the Nomad City too far, you will get ripped apart from the planet's atmosphere.