Mapping unit in astrography equal to sixteen
subsectors. Average density is 500 to 650
worlds per sector.
Sectors are named, and several synonyms are in common use, including march
(or marches), region, reach (or reaches), quadrant, and matrix. The
Spinward Marches, for example,
is a sector.
As a rough means of comparing size (and as of 1115), the sector counts of
the large interstellar states and areas of settlement are: the Imperium: 27; the Aslan Hierate: 18; the Hive Federation: 17; the Two Thousand Worlds: 14; the Vargr Extents: 14; the Zhodani Consulate: 13; the Solomani Confederation: 11.