Who gets ownership of a system in coalition war?

[vonH]

When an AI-empire tries to become the crisis the rest of the galaxy declares some sort of coalition war with the total war-cb (ie ownership transfers immediately).
What I don't get is what decides who gets the system, for the most part it works as one would think it should work, first come first serve, but for some reason my empire sometimes transfers ownership to another empire? why? what is happening?

 

[fusei]

The first priority is any claims a war ally might have,
the second priority is who (completely) owns an adjacent system,
and the third priority is who actually captures (the starbase of) the system.

 

[vonH]

Ahh thanks, that makes sense I suppose

 

[Lykus Cerebros]

What usually works for me is using the jump drives to jump behind enemy lines. That way you get a system which in turn results in you getting a higher weight for all conquest originated from that point.

 

[Verx90]

What usually works for me is using the jump drives to jump behind enemy lines. That way you get a system which in turn results in you getting a higher weight for all conquest originated from that point.

it doesn't realy work if some of your "ally in war" claimed those systems , or they had those system before they lost them .