1027 Aesculapia, provisional designation A923 YO11, is a stony asteroid from the outer region of the asteroid belt, about 32 kilometers in diameter. It was discovered by Belgian–American astronomer George Van Biesbroeck at the U.S Yerkes Observatory in Williams Bay, Wisconsin, on 11 November 1923. The minor planet was named for Aesculapius, the Greek and Roman demigod of medicine and healing, son of Apollo and Koronis, after whom the asteroids 158 Koronis and 1862 Apollo and are named, respectively.