Do i miss something or almost entire Calixis Sector systems only have one planet ? (ex. Scintilla, Iocanthos, Settlement 228) How is this possible i mean? Almost all star systems in a 200 light years cube have only one planet??

The DH core book has a big two page map of the Calixis Sector with all the planets and their classifications/world types. I'm AFB right now so just flip through the pages it might even be on one of the inside cover areas. Cant remember exactly

Vedneros said:

One inhabited planet. The map usually doesn't include planets that have no permanent population; there are probably multiple uninhabited planets in most systems.

Adeptus-B said:

Beyond that, it's fairly common within the Imperium to classify systems by their dominant world - in a system with multiple worlds, one is home to the Imperial Commander who rules the system in the Emperor's name, and the nature of the dominant world is likely to determine the tithes and primary imports and exports of the system.

When it comes to mapping, marking only the most significant world in the system is a matter of convenience. Most maps of the Imperium mark Terra, even though Mars is in the same system and extremely important in its own right.

ok then im satisfied thank you for your answers