According to Randall Munroe, the International Astronomical Union, which assigns designations to celestial bodies, was accepting name suggestions for small solar system objects, and xkcd readers Lewis Hulbert and Jordan Zhu submitted Munroes name for asteroid (4942) 1987 DU6. The recommendation was accepted, and the asteroid is now officially designated 4942 Munroe. Read more
4942 Munroe is a main-belt minor planet. It was discovered by Henri Debehogne at La Silla Observatory in Chile on February 24, 1987. In 2013, it was named after Randall Munroe, a former NASA roboticist and the author of xkcd. Read more