Schwarzschild Confederation - A Stars Without Number Sector
3200-1-1
You are a citizen of the Schwarzschild Confederation. The Schwarzschild Confederation contains every planet of the Schwarzschild Sector. The main powers and leaders of the Confederation are the Five Colonies, which claim to be the rightful successors of the Terran Mandate after the Scream in the sector. The worlds in this Confederation range from relatively primitive tech level 1 worlds to the Tech Level 4 core worlds of Ehlers, Colberg, Unsold, Treder and Schwenk. If you happen to be a citizen of one of these worlds, you find yourself to be a bit more equal than other citizens.
The history of the Confederation claims the five core worlds were fairly advanced colonies of the Terran Mandate, weathering the destruction of the Scream well enough. Regarding the last few centuries of strife between various factions in the Schwarzschild Sector, this is probably only partially true.