 According to the surveys carried out by the Japanese Akari satellite and the NEOWISE mission of NASA's WISE telescope, "Edwin" measures between 25.15 and 36.355 kilometers in diameter and its surface has an albedo between 0.1113 and 0.235.The "Collaborative Asteroid Lightcurve Link" assumes a standard albedo for carbonaceous asteroids of 0.057 and consequently calculates a larger diameter of 42.23 kilometers based on an absolute magnitude of 10.6.This minor planet was named after Edwin Van Biesbroeck, son of discoverer George Van Biesbroeck.