 It seems that dark, low-density objects like Salacia retain internal porosity from their formation, and thus are not planetary bodies.Both Quaoar and Orcus have moons that have allowed their mass and density to be determined, and they are either bright enough to suggest resurfacing and thus planetary geology at least at some point in their past, or are dense enough that they are clearly solid bodies and thus at least potentially dwarf planets.Of the remaining trans-Neptunian objects, the most likely dwarf planets include