Johann Daniel Titius was a German mathematician and astronomer born on January 2, 1729. He is best known for formulating the Titius-Bode law, which suggests a pattern in the distances of planets from the Sun. This law proposed that the distance of each planet from the Sun could be predicted using a simple mathematical formula. Titius's work contributed to the understanding of the solar system and inspired further research in astronomy. Although the Titius-Bode law is not universally accepted today, it played a significant role in the discovery of the dwarf planet Ceres and influenced the search for other celestial bodies.