It's yet another anti-common sensical bug that has never been fixed after 6 months. You basically have to ask, because the name of the place in the mission doesn't match the name of the place on the map. Maybe things like this will start to get fixed soon.
I can't imagine it would be that hard to edit a mission text to read, "Visit Starbase 114" to "Visit Starbase 114 in the Celes Sector of blah blah."
It's kind of baffling that this bug is still in the game.