Star Wars: Knights of the Old Republic/Korriban

As you land on Korriban, you have another vision of a Star Map as you sleep in your bunk. If Bastila is with you and this isn't the last planet you visit, she speaks to you about it:

So Bastila cannot be added to your party on Korriban. You can still ask her and some other party members if they know anything about Korriban: