Located on the Northern Edge of the Imperium of Man, the Calixis Sector lies deep within the Segmuntum Obscurus, close to 30,000 light years from Holy Terra. The Calixis sector contains a surprising large amount of useful worlds and very large stellar density, even in it’s distant location. As such, the Calixis Sector is rather large compared to some other sectors of the Imperium.
The Calixis Sector borders many distinct regions of space. To Spinward lies the Scarus Sector, to Coreward is the Ixaniad Sector. To Trailing from Calixis lies the vast and treachorous expanses of the Fydae Great Cloud, and eventually the Segmentum Pacificus. To Rimward lie the treacherous expanse of the Halo Stars, in particular the region known as the Koronus Expanse.
The Calixis Sector also lies only 8,000 kight years from the Eye of Terror, which is visible from almost all Sector worlds. The Eye also tends to cast a shadow over the lgiht of the Astronomican, causing mild warp travel difficulties in sector.
The Lord Sector Calixis is Marius Hax, who has ruled Calixis for almost one hundred years, from the capital word of Scintilla. The Sector itself is split up into eight sub-sectors, which each have an appointed Sub-Sector Governor, who in turn watch over the appointed Planetary Governors.
The Calixis Sector is also known for having an oddly high concentration of active Inquisitors within its borders, and Inquisitor Lord Caidin, the Lord Inquisitor of the Calixis Conclave, wields a large amount of political power.
A special note is the trio of Forge Worlds known as The Lathes, which are given in perpetuity to the Adeptus Mechanicus, and are thus technically outside of Lord Hax’s Authority.
see also: Timeline
The Calixis Sector has been part of the Imperium for over 2500 years, and as such is a relatively young Sector. The Sector has seen it’s fair share of struggle within this short period of time, and is currently invested in a major Imperial Crusade.