The original UWP of Palompi, the first planet we see (from the hex-number order) is X100000-0. Which, in Traveller-speak, is a lifeless, airless rock, perhaps only a thousand miles in diameter, with no one living on it. Quite frankly, there's not much reason for any travellers to visit this system. The updated 'canon' UWP data is only slightly more interesting, but that's only because it doesn't make a whole lot of sense. With a UWP of X101200-0, a PBG of 600, and stellar data of M2 V, we have the same airless rock (orbiting a red dwarf star), but now with some surface moisture (about 10%) on the small planet, in spite the fact that with no atmosphere and very little gravity the idea of any surface moisture somehow being retained seems rather unlikely. Worse, we now have a population of about 600... despite the fact that this is a lifeless rock, and they have absolutely no technology worth mentioning. Unless we assume the natives are some sort of energy beings that can survive in a vacuum and have no need whatsoever for technology, this can probably be safely ignored.
With no oceans, and no gas giants in the system, there's not currently any real reason why a ship might pass through the system, since it can't even do any fuel skimming to refuel for another jump. Given that the Traveller world generation system defaults to crating the primary world of interest in a system, if there are any other planets in the system (and a type M star would have a fair chance of plenty of other worlds orbiting it, even if there are no asteroid listed belts in the system), then by default any other worlds in the system are even less of interest than Palompi is.
Still, there should be some reason why this system is on the maps, or at least, why it once was. Let's run with the idea that there was once a mining colony here; at its peak it held about 600 inhabitants or so. The operation was run by nearby Rickamil (and therefore, Sphere Fenix), the only hi-tech world within jump-1 range of Palompi (one parsec coreward of Palompi is Ambale, in the Induz subsector of the Maranantha-Alkahest sector, but Ambale is a pre-spaceflight world, and would be rather unlikely to run any off-world mining operations as a result). As with many airless worlds, the working and living areas were mostly constructed underneath the surface as opposed top on it. The primary element mined here was lanthanum, but various other rare ores and minerals were collected as well.