User blog comment:StormWarriors2/The Widow Systems/@comment-24909831-20150128162551

Correct me if I'm wrong, but I have understood that Deathwatch fortress locations are absolute secrets. To pin it even within one system seems so overwhelming amount of knowledge (if it is held by anyone) that the fortress would be moved into another location.

Hive Worlds are also, if not extremely, rather rare. I wouldn't place more than two of them even within heavily populated sub-sector and considering the location (Ghoul Stars), I wouldn't vote for even one of such world.