Apollonius [Apollonios] of Perga (200–100 BC)

Greek geometer from Perga, now in Turkey, who proposed that the planets revolved around the Sun, and the Sun revolves around the Earth. Apollonius left no astronomical works but is believed to be the inventor of the geometric system of epicycles and eccentric circles, by which perfect circular motions were combined into the actual elliptical orbits of the planets