Orbits of the 3 known main-belt comets (red), the 5 innermost planets (black), a sample of 100 main-belt asteroids (orange), and 2 "typical" comets (Halley and Tempel 1) inblue. Positions of the main-belt comets and planets on March 1, 2006, are plotted in black dots. Credit: P. Lacerda/Univ. Hawaii/Univ. Coimbra, Portugal. Click to enlarge.
