Reuban Nakian, Juno, 1992, bronze, 86 x 90 1/2 x 84 inches, Brigham Young University Museum of Art. On this day in 1804, the Juno asteroid was discovered by Karl Ludwig Harding, a German astromoner. Juno is one of the largest asteroids in the Main Belt. Because of its size, it was originally considered a planet.