Ras Alhague

Definition

Ras Alhague (Alpha Ophiuchi) is the brightest star in the constellation Ophiuchus, the Serpent-Bearer. The Arabic name raʾs al-ḥawwāʾ means 'head of the serpent-bearer,' and the Latinized Caput Serpentis preserves the same sense. Magnitude 2.1, the star marks the head of the Ophiuchus figure who in classical iconography wrestles the serpent (Serpens). It is distinct from Caput Draconis ('Head of the Dragon'), which is the modern Western name for the North Lunar Node.

In Tradition

In the medieval Arabic-Latin meteorological tradition transmitted through Masha'allah and his Latin reception, Ras Alhague functioned as a drought-breaking rain-indicator fixed star: when the star occupied a watery domicile (Cancer, Scorpio, or Pisces), the Moon's subsequent ingress into a watery sign was read as a rapid-rain trigger. Modern Western fixed-star practice (Brady, Robson) reads Ras Alhague through the serpent-bearer figure for healing, knowledge of toxins and antidotes, and the doctor-or-patient duality of the Asclepius medical lineage that the constellation iconographically references.

In Practice

When you read a chart for fixed-star influences, you note any natal planet conjunct Ras Alhague (currently c. 22° Sagittarius). The Mashaʾallah meteorological technique uses the star's domicile-position for weather-timing — a method that preserves an older Hellenistic-Babylonian tradition of using fixed-star domicile-locations for weather prediction. The Brady-tradition modern reading uses the star for healer/healed themes via the Asclepius-Ophiuchus medical iconography. Always disambiguate from Caput Draconis (North Node), since the name 'Head of the Serpent' attaches to both in different traditions — Dykes's apparatus to the Sahl-Masha'allah corpus explicitly distinguishes them.

Historical Origin

The fixed-star weather-prediction technique appears in the Masha'allah meteorology preserved in the Sahl-Masha'allah Latin corpus (8th-9th c. Arabic, transmitted into medieval Latin). Dykes's modern critical edition footnotes the star-identification at fn. 59 as α Ophiuchi specifically. The Arabic name raʾs al-ḥawwāʾ entered medieval Latin star-catalogues via Kunitsch and other transmission paths. Robson's 1923 *The Fixed Stars and Constellations in Astrology* gives the canonical 20th-century reception; Brady extends the doctrine into modern practice.

Etymology

Origin: Arabic. Meaning: raʾs al-ḥawwāʾ — 'head of the serpent-bearer' (raʾs, 'head'; al-ḥawwāʾ, 'the serpent-bearer / charmer')..

Further Reading

• Bernadette Brady, Brady's Book of Fixed Stars
• Vivian Robson, The Fixed Stars and Constellations in Astrology
• Benjamin N. Dykes, Works of Sahl & Masha'allah