The list of topics to be covered by the IAUS229-ACM2005 meeting intends to provide a stimulating reference frame for research and discussion. It has been designed to enhance the interdisciplinary nature of the Symposium in the quest for a unified understanding of the origin and evolution of small Solar System bodies as a whole, call them asteroids, comets, trans-Neptunian objects or meteors. The main topics of the meeting will be: Space missions: results from “Deep Impact” and other recent missions; future prospects. Internal structure of asteroids and comets: binaries and satellites, gravitational aggregates, cometary nuclei structure. Trans-Neptunian Objects (TNOs): physical properties, structure of the Kuiper belt. Connections between asteroids, cometary nuclei and trans-Neptunian objects: differences and similarities. Connections between asteroids and meteorites: mineralogical characterization. Connections between comets, meteor showers and interplanetary dust. Minor bodies dynamics: origin of comets, transitions between populations, non-gravitational forces, asteroid families. Collisions and impacts: cratering, breakup, collisional evolution, hazards, bolides and super bolides, evolution of life. Near-Earth Objects (NEOs): searching, statistics, origin, physical characterization. Origin and evolution of our Solar System and extra-solar planetary systems: implications from minor bodies studies. Although avoiding including in the main list the categories solely devoted to specific populations of minor bodies, communications covering any topic about asteroids, comets, trans-Neptunian objects, meteors, meteorites and interplanetary material are welcome.