Theodosius of Bithynia

Theodosius of Bithynia was a Greek mathematician and astronomer from the 2nd century CE. He is known for his work on planetary motions, including efforts to refine models of celestial bodies' movements. Although much of his work survives only in references, he contributed to early astronomical theories and possibly influenced later developments in astronomy. His approach combined mathematical techniques with observational data, advancing understanding of the heavens during the Greco-Roman period.