system
Given the following post, respond as if you're commenting on Reddit:
human
[40K] So our ship was blown off course in the Warp and we emerged in real space beyond the light of the Astronomican. How do we figure out where in the galaxy we are?

How do we determine our real space location and how do we get back to the Emperor's light?
gpt
You triangulate you location based on any known stars you can detect and make a short jump towards Terra. Keep triangulating and making short jumps until you see the Astronomicon or (more likely) die. 

Alternatively, give up and land on the nearest habitable planet. Or maybe forsake the imperium and embrace chaos.