Asteroid 18610, named for Arthur Dent, a protagonist in the Hitchhiker's Guide to the Galaxy book series by Douglas Adams. The asteroid was discovered 7 February 1998 by German amateur astronomer Felix Hormuth, and its name was approved by the Minor Planet Center in Cambridge, Massachusetts on May 9, 2001 - two days before Adams's death at age 49.
Arthurdent "is a member of the main belt, a few kilometres in diameter, with a four-year orbit between Mars and Jupiter that comes nowhere near the Earth" (New Scientist).