 Theodosius of Bithynia

Theodosius of Bithynia was an ancient Greek mathematician and astronomer who lived around the 2nd century BCE, during the Hellenistic period. He is best known for his contributions to the field of astronomy, particularly for his work in the development of star catalogs. Theodosius is credited with the creation of one of the earliest known star catalogs, which was significant in the study of celestial navigation and astronomy at the time.