Nova Thulium

Nova Thulium is a world of the Macragge system, and the birth world of Marneus Calgar.

He was born there as Tacitan, a serf of House Calgar, in about the 41st millennium, and later took the name of the house’s heir. An older account instead says he was found at about fourteen among captives of Hive Fleet Locust. The two accounts conflict, and both are recorded.

No finer coordinates than its place in the Macragge system are recorded.