Whatever one's stance on the recent "demotion" of Pluto from planet to dwarf planet, the controversy has helped to make the public better aware that the solar system is populated with a lot more than the planets, their satellites, and the occasional comet or meteorite. The solar system is scattered with many smaller objects large enough to be tracked and numbered and sometimes named. Each category of object has its particular properties and stories to tell. Molecules have been identified on a number of these objects, and this bibliography has been expanded accordingly.

This is intended to be a representative but not exhaustive listing of planetoids with known molecules. For a descriptions of what's out there, see the Wikipedia articles on minor planets and Trans-Neptunian Objects. For more technical information, visit the Minor Planet Center. For a reasoned take on the Pluto controversy, I suggest the short article by David Jewitt and Jane Luu that can be accessed here.