This is a relatively boring star system. Yellow star on the dim side, two rocky planets, asteroid belt, gas giant with a few moons. It wasn't a great prospect to begin with, but even mediocre prospects must be checked out. The potentially habitable planet here turns out to be closer to the star and much hotter than anticipated. Certainly not suitable for colonization, given that water would boil on the surface if the atmospheric pressure wasn't so high.
Though, there is something else interesting here. A small starship (well, 'small' as far as starships go, it's about a hundred meters long) is in a low orbit around the potentially habitable planet. Smooth round body, two nacelles, no active radio or subspace transmissions.