1.5 Sectors

Introduces the hierarchical sector designation system, defining the subquadrant, sector zone, and sector grid divisions of the galactic disk.

Sector Zone diagram showing the subquadrant wheel (lettered and numbered wedges) and the concentric sector-zone rings, with a top view of the galaxy and an isometric sector grid (sector grid 15) scaled at 5,000 LY by 3,600 LY.

Sector Grid diagram showing a 5x5 array of numbered sector quads (00-24) measuring 5,000 LY, and an isometric cube illustrating sector numbers 00-24, 25-49, 50-74, and 75-99 at roughly 4,500 LY (near UFP) by 3,600 LY.

The first digit (or letter) in the sector designation refers to the subquadrant, a wedge-shaped slice of the galactic disk 50,000 light-years long, 3,600 light-years high, and 8,727 light-years wide at its widest point.

The second digit (0–Y) refers to the sector zone, a concentric circle 5,000 light-years wide and 3,600 light-years high centered on the galactic core.

Each intersection of a subquadrant and sector zone is a sector grid 5,000 light-years long by 3,600 light-years high (for instance, sector grid 15 is the intersection of subquadrant 1 and sector zone 5). The width of a sector grid depends on its distance from the galactic core: near the UFP, a sector grid is approximately 4,500 light-years wide at its widest point.