Hellenistic
The astrology of the Greek-speaking Mediterranean from roughly the 1st century BCE to the 7th century CE, as recorded by authors such as Vettius Valens, Dorotheus and Ptolemy.
1 Oct 2026
This pairing puts the Sun in Leo, its domicile, the sign it rules and so its home, and the Moon in Aries. Counted by sign, that is a trine, a harmonious configuration in Ptolemy's terms, and both signs are masculine fire signs. The Moon has no domicile, exaltation, detriment or fall in Aries. Aries is four signs behind Leo, which puts the Moon roughly 210° to 270° ahead of the Sun along the zodiac. That is roughly the waning half, between past full and last quarter. Sign distance is coarse, so exact degrees matter. Aries is the Sun's exaltation, though here it is the Moon that sits there. Mars, Aries's lord, has no dignity in Leo. The tradition looks next to the Sun's own house and to Mars's placement.
A note on “detriment”: the early Hellenistic texts note a planet opposite its own sign without naming it. The term is defined only in late and medieval sources, and scholars disagree on whether the idea was implicit earlier.
Sources
- Ptolemy, Tetrabiblos, Book I
- Paulus Alexandrinus, Introductory Matters
- Chris Brennan, Hellenistic Astrology: The Study of Fate and Fortune (2017)
What was checked
An AI research review checked this text against sources on 1 Oct 2026. No person has reviewed it.
Reviewer's notes
Sign-count configurations (Ptolemy I.13, I.16) and Moon-phase ranges (rechecked by arithmetic against the Sun in Leo and the lunar-phase angles) hold. Changed 'easiest' wording to Ptolemy's 'harmonious' where it appeared.
Sources consulted
- Ptolemy I.5-7, 11-13, 16-19: benefic/malefic, sect, solid/bicorporeal and masculine/feminine signs, aspects, disjunct signs, houses, exaltations and depressions penelope.uchicago.edu (opens in a new tab)
- new 0, first quarter 90, full 180, last quarter 270 deg Sun-Moon elongation; waxing/waning en.wikipedia.org (opens in a new tab)
- Valens Anthology I (Riley): domiciles ('house of Mars/Sun'), sign genders, bicorporeal signs, planets' sect skyscript.co.uk (opens in a new tab)
- Paulus' Introductory Matters covers the lunar phases, sect and aspects, and chart-rulership en.wikipedia.org (opens in a new tab)
- confirms Brennan, Hellenistic Astrology: The Study of Fate and Fortune (Amor Fati Publications, 2017) exists; topic coverage taken from the Brennan-hosted Astrology Podcast pages above astrologynewsservice.com (opens in a new tab)