Antiochus of Athens (Ancient Greek: Ἀντίοχος ὁ Ἀθηναῖος) was a Hellenistic astrologer who flourished sometime between the late 1st century AD and the mid 2nd century AD. The precise period of his activity is disputed: Franz Cumont and other scholars have argued for a date as early as the 1st century BC, while David Pingree placed him toward the end of the 2nd century AD. The only securely dated reference to Antiochus comes from the Neoplatonist philosopher Porphyry (c. 234 – c. 305 AD), indicating that Antiochus must have lived before Porphyry’s death.
Works and fragments
All of Antiochus’s original writings are lost, but substantial fragments and extracts survive in the works of later authors. The texts attributed to him include:
- Thesaurus (or Treasuries) – a compendium of astrological knowledge.
- Eisagogika (Introduction) – an introductory treatise on astrology.
- An astrological calendar concerning the risings and settings of the stars throughout the twelve months of the year.
These works are quoted or paraphrased by Porphyry, Rhetorius of Egypt, the Byzantine epitomizer known as “Anonymous of 379 AD,” Hephaistio of Thebes, and Julius Firmicus Maternus, among others. A parapegma (calendar of star risings, settings, and associated weather changes) attributed to Antiochus also survives in fragmentary form.
Contributions and influence
Antiochus is noted for several technical contributions to the astrological tradition:
- Early discussion of reception, a concept concerning the mutual influence of planetary positions.
- Treatment of the twelve houses (topoi) of the astrological chart.
- Detailed descriptions of heliacal risings and settings, and the calculation of the Lots.
His material was incorporated into Porphyry’s third‑century Introduction to the Tetrabiblos of Ptolemy, and later astrologers such as Hephaistio and Firmicus Maternus relied on his definitions of technical terms used by Ptolemy. Consequently, Antiochus played a pivotal role in transmitting Hellenistic astrological theory to later Roman and Byzantine scholars.
Historical assessment
Because Antiochus’s own texts are unavailable, modern knowledge of his thought depends entirely on secondary citations. Scholars continue to debate the chronology of his life and the extent of his original contributions, but his influence on the development of astrological literature in late antiquity is widely acknowledged.
References
- Wikipedia contributors, “Antiochus of Athens,” Wikipedia, The Free Encyclopedia, accessed April 2026.
- Porphyry, Introduction to Ptolemy’s Tetrabiblos, chapter 38.
- Franz Cumont, “Antiochus d’Athènes et Porphyre,” L’Annuaire de l’Institut de Philologie et d’Histoire Orientales (1933).
- David Pingree, “Antiochus and Rhetorius,” Classical Philology 72 (1977): 203‑223.