Champollion , and Jean-Baptiste Biot . [5] Johann Karl Burckhardt and Jean-Baptiste Coraboeuf held, after analysis of the zodiac, that the ancient Egyptians understood the precession of the equinoxes . Champollion, among others, believed that it was a religious zodiac. Champollion deciphered the names of Tiberius , Claudius , Nero and Domitian on the