Berossus

Berossus (bəˈrɒsəs) or Berosus (bəˈroʊsəs; Bērōssos; possibly derived from , romanized: , "Bel is his shepherd") was a Hellenistic-era Babylonian writer, a priest of Bel Marduk and astronomer who wrote in the Koine Greek language, and who was active at the beginning of the 3rd century BC. Versions of two excerpts of his writings survive, at several removes from the original. Using ancient Babylonian records and texts that are now lost, Berossus published the Babyloniaca (hereafter, History of Babylonia) in three books some time around 290–278 BC, by the patronage of the Macedonian/Seleucid king Antiochus I Soter (during the third year of his reign, according to Diodorus Siculus). Certain astrological fragments recorded by Pliny the Elder, Censorinus, Flavius Josephus, and Marcus Vitruvius Pollio are also attributed to Berossus, but are of unknown provenance, or indeed are uncertain as to where they might fit into his History. Vitruvius credits him with the invention of the semi-circular sundial hollowed out of a cubical block. A statue of him was erected in Athens, perhaps attesting to his fame and scholarship as historian and astronomer-astrologer. A separate work, Procreatio, is attributed to him by the Latin commentaries on Aratus, Commentariorium in Aratum Reliquiae, but there is no proof of this connection. However, a direct citation (name and title) is rare in antiquity, and it may have referred to Book 1 of his History. He was born during or before Alexander the Great's reign over Babylon (330–323 BC), with the earliest date suggested as 340 BC. According to Vitruvius's work de Architectura, he relocated eventually to the island of Kos off the coast of Asia Minor and established a school of astrology there by the patronage of the king of Egypt. However, scholars have questioned whether it would have been possible to work under the Seleucids and then relocate to a region experiencing Ptolemaic control late in life. It is not known when he died.