Where is Nova Terra?

[Felix Antipodes]

As per the topic - I've been searching through various books and the interwebs but nothing seems to give a location for the planet beyond naming the sector (Viridis). I'm assuming it's in the Segmentum Pacificus since that is the region they annexed from the Imperium. We have fairly good maps/descriptions for central/southern Pacificus (Macharian Crusade & Sabbat Worlds) so maybe north/central?

 

Considering its importance in Imperial history - it has led rebellions against the Imperium twice - I'm surprised it's so elusive.

 

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