you could have a look in 'BuffPhaseStarbaseSameOrbitbodyDebuffRecourse.entity', it has a line that has a duration of 600( 10 minuites) assuming it is in seconds
and I also suggest creating a mod and puting your modified file in the mod
harpo
I found that file late last night before I was about to give up and that's where I was going to start my un-nerfing adventure (and yes in a mod lol). Change it out so it lasts only 5 seconds or so, then I can make sure that's indeed the one I want to change.
Why not just remove the ability from the Starbase entity file?
Cause I don't know how to do that, haven't played with the starbase entity files much, hasn't been a whole lot I've wanted to change up until now. 
and do yourself a large favour... choose a better topic title that indicates that you want to mod it.... and that you not want to have it unnerved by the Devs.
That way you could avoid a few death by NERDRAGE on this forums...
Nerdrage posts would still have bumped my thread and got people to look and read it, so I think my tactically worded title worked out well in my favour. 