Small Solar System body
A small Solar System body (SSSB) is an object in the Solar System that is neither a planet, a dwarf planet, nor a natural satellite. The term was first defined in 2006 by the International Astronomical Union (IAU) as follows: "All other objects, except satellites, orbiting the Sun shall be referred to collectively as 'Small Solar System Bodies' ".
This encompasses all comets and all minor planets other than those that are dwarf planets. Thus SSSBs are: the comets; the classical asteroids, with the exception of the dwarf planet Ceres; the trojans; and the centaurs and trans-Neptunian objects, with the exception of the dwarf planets Pluto, Haumea, Makemake, and Eris and others that may turn out to be dwarf planets.
Family Portrait (MESSENGER)
The Solar System Family Portrait is an image of many of the Solar System's planets and moons acquired by "MESSENGER" during November 2010 from approximately the orbit of Mercury. The mosaic is intended to be complementary to the "Voyager 1"s "Family Portrait" acquired from the outer edge of the Solar System on February 14, 1990.