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
Sun in Leo and Moon in Aquarius are opposite signs, six apart, which Hellenistic astrologers treat as the hard opposition. Leo is the Sun's domicile, the sign it rules. Aquarius is its detriment, a concept the tradition names explicitly only late, so the opposition runs between those two signs. The Moon has no domicile, exaltation, detriment or fall in Aquarius. Opposite signs put the Moon roughly 150° to 210° ahead of the Sun along the zodiac, which means roughly full. Sign distance is coarse, so the exact degrees decide it. Saturn, the planet that rules Aquarius in the traditional scheme, is in detriment in Leo, so the Moon's lord is out of dignity in the Sun's sign. The tradition looks next to Saturn's sign and house, and to the Sun's.
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
- Vettius Valens, Anthology, Book I
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. Added a note that detriment is a late-named concept. Replaced 'strongest and weakest signs' with domicile and detriment.
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)
- Brennan: detriment is defined as a full concept only by Rhetorius (6th-7th c.), earlier references infrequent theastrologypodcast.com (opens in a new tab)