I am not convinced :D (It is a NPC station)
Ok, my bad... I logged again and it seems it works. Thanks dude.
Anyway, it could be cool to know the delay in minutes if you don't do anything ^^
"It was the 23rd century, mankind's darkest hour. [...]"
If you sit right next to it for hours without the server restarting, it will stay hostile.
I don't think the "go out of range" works, generally it'll just disappear from your Important contacts list.
Relogging definitely works for NPC stations though.