Montage by Emily Lakdawalla. Data from NASA / JPL / JHUAPL / UMD / JAXA / ESA / OSIRIS team / Russian Academy of Sciences / China National Space Agency. Processed by Emily Lakdawalla, Daniel Machacek, Ted Stryk, Gordan Ugarkovic.
Asteroids and comets visited by spacecraft as of August 2014, in color, excepting Vesta
A montage of 17 of the 18 asteroids and comets that have been photographed up close as of August 2014, when Rosetta arrived at comet Churyumov-Gerasimenko. This version is in color and shows the bodies at their correct relative (though not absolute) albedo or brightness. Not included are Vesta or Ceres, both of which are many times larger than Lutetia.
Below is another version of the same montage, except that the albedo is linearly scaled, meaning that Borrelly (with an albedo of 0.03) really is ten dimes darker than Steins (albedo 0.34). (Also available at 20 m/pixel)