NASA Galileo imaging system captured this picture of the limb of the asteroid 243 Ida about 46 seconds after its closest approach on August 28, 1993, from a range of only 2480 kilometers.

NASA's Galileo imaging system captured this picture of the limb of the asteroid 243 Ida about 46 seconds after its closest approach on August 28, 1993, from a range of only 2480 kilometers. http://photojournal.jpl.nasa.gov/catalog/PIA00138

Ida Galileo

Asteroid Ida - Limb at Closest Approach