Ok, so keep in mind the post I just made in the new RP thread. The Sith Hunters kinda vanished during these two years. Please don't bring the Dominion to the Watchtower... it's a highly unknown planet. In the Republic databases, it's listed as Gerv, but its location is 'unknown'. Riebe only found it by accidentally crashing into it.
It's far on the Outer Rim... in fact, it's practically past it. A rich, paranoid old man set up a 'watchtower' there because he was worried that there was some form of intelligence outside this galaxy that would eventually manage to come in and conquer. So it's practically on the edge of the galaxy... a place where so few people go.