Hicetas

For other people named Hicetas, see Hicetas (disambiguation).

Hicetas (Ancient Greek: Ἱκέτας or Ἱκέτης; ca. 400 BC – ca. 335 BC) was a Greek philosopher of the Pythagorean School. He was born in Syracuse. Like his fellow Pythagorean Ecphantus and the Academic Heraclides Ponticus, he believed that the daily movement of permanent stars was caused by the rotation of the Earth around its axis.^[1]

Notes

^ Theophrastus ap Cicero, Acad. Quaest. ii. 39. Diogenes Laërtius (viii. 85) says that some ascribed this doctrine to Hicetas, while others attributed it to Philolaus.

Greek astronomy

Astronomers	Acoreus Aglaonike Agrippa Anaximander Andronicus Apollonius Aratus Aristarchus Aristillus Attalus Autolycus Bion Callippus Cleomedes Cleostratus Conon Eratosthenes Euctemon Eudoxus Geminus Heraclides Hicetas Hipparchus Hippocrates of Chios Hypsicles Menelaus Meton Oenopides Philip of Opus Philolaus Posidonius Ptolemy Pytheas Seleucus Sosigenes of Alexandria Sosigenes the Peripatetic Strabo Thales Theodosius Theon of Alexandria Theon of Smyrna Timocharis

Works	Almagest (Ptolemy) On Sizes and Distances (Hipparchus) On the Sizes and Distances (Aristarchus) On the Heavens (Aristotle)

Instruments	Antikythera mechanism Armillary sphere Astrolabe Dioptra Equatorial ring Gnomon Mural instrument Triquetrum

Concepts	Callippic cycle Celestial spheres Circle of latitude Counter-Earth Deferent and epicycle Equant Geocentrism Heliocentrism Hipparchic cycle Metonic cycle Octaeteris Solstice Spherical Earth Sublunary sphere Zodiac

Influences	Babylonian astronomy Egyptian astronomy

Influenced	European astronomy Indian astronomy Islamic astronomy