Last updated: April 26, 2026
Hellenistic Astrology
Free Alcocoden Calculator
Find the planet that rules your hyleg and distributes your chart's years. The alcocoden is shown with the classical planetary years and an honest modern reading: vitality symbolism, not lifespan prediction.
What is the alcocoden?
The alcocoden, from the Persian al kadkudha meaning "master of the house," is the planet that rules your hyleg's degree and historically distributed the years of life in classical astrology. Identified after the hyleg, the alcocoden's planetary years and condition were used by Hellenistic and medieval astrologers to project the chart's vitality span.
The Greek tradition (Dorotheus, Valens) used the bound lord of the hyleg's degree as the alcocoden. The medieval tradition (Bonatti, Lilly) used the almuten of the hyleg's degree, which often produces a different planet. Both methods coexist in the literature, and serious traditional astrologers are still arguing about which one Ptolemy actually meant. Augurine defaults to the Greek bound lord and shows both results so you can compare.
How the alcocoden is calculated
The calculation runs in five steps, with the first inherited from the hyleg calculator.
- Identify the hyleg. The five hylegiacal points (Sun, Moon, Ascendant, Lot of Fortune, prenatal syzygy) are evaluated; whichever qualifies as your chart's giver of life becomes the input.
- Find the lord(s) of the hyleg's degree. At your hyleg's exact degree, multiple planets often hold dignity: the sign ruler, the bound (term) ruler, the triplicity ruler(s) of your sect, and the exaltation ruler if applicable.
- Choose between bound lord and almuten of the degree. Greek tradition picks the bound lord. Medieval tradition picks the planet with the highest summed dignity at the degree. Augurine's default is the Greek bound lord; both are shown.
- Evaluate the chosen ruler's condition. Strong condition (essentially dignified, angular, free of malefic aspects) gives the greater years. Neutral gives middle years. Weak (debilitated, cadent, afflicted, combust) gives lesser years.
- Apply the planetary-years table. Each traditional planet has three year values from Bonatti's Liber Astronomiae III. The condition selects which set applies.
A modern reading of the alcocoden
The medieval Bonatti formulation took the planetary years, modified them by the alcocoden's condition, and projected the result as a lifespan number. Practitioners then directed the hyleg to malefic degrees ("anaretic" points) using primary directions and looked for the death prediction to confirm.
Patrick Watson's critical work documents the problem: when the predicted year missed, practitioners adjusted the math, invoked secondary directions, redefined the anareta, or substituted lesser years for middle years. The technique survived not because it worked but because it could always be retrofit to whatever happened.
We agree with Watson. The medieval lifespan calculation is not a tool you should rely on. The classical concept of the alcocoden as the chart's distributor of years remains useful for symbolic interpretation: where the chart routes time and what conditions modify the routing. The numbers are best read as descriptions of pace and emphasis, not predictions.
For practical timing tools that survive modern scrutiny, the profection year calculator covers a Hellenistic technique that uses the same planetary-years tradition without pretending to predict lifespan.
The Length-of-Life Trinity
Each member of the trinity answers a different question.
| Concept | Question | Source |
|---|---|---|
| Hyleg | Where does your life force live? | Ptolemy Tetrabiblos III.10 |
| Alcocoden | How does that life force unfold over time? | Bonatti Liber Astronomiae III |
| Almuten Figuris | Which planet runs the chart? | Ibn Ezra Sefer ha-Moladot |
Sources and methodology
Classical authorities: Ptolemy Tetrabiblos III.10 (the foundational five-points framework), Dorotheus of Sidon Carmen Astrologicum III (the bound-lord tradition), Vettius Valens Anthology III (early planetary-years material), Masha'allah On Nativities(eighth-century Perso-Arabic distinction of greater, middle, lesser years), Bonatti Liber Astronomiae III (medieval consolidation), William Lilly Christian Astrology (English transmission).
Modern reception: Bernadette Brady The Hyleg and Alcoccoden, Robert Schmidt Definitions and Foundations, Patrick Watson Traditional Astrology of Death (the critical statistical work cited above).
Computational defaults: ephemeris from NASA's ANISE toolkit with JPL DE-440 kernels for arc-second precision. Whole Sign houses by default. Hyleg dependency uses the same logic as the hyleg calculator. Default rule set: Greek bound lord. Medieval almuten of degree available and shown for comparison. Year-table source: Bonatti Liber Astronomiae III.
More Free Tools
Hyleg Calculator
Find the giver of life in your chart. Sect-aware ranking across the five hylegiacal places (Sun, Moon, Ascendant, Lot of Fortune, prenatal syzygy) with full dignity transparency.
Almuten Figuris Calculator
Find the planet that wins your chart. Full Ibn Ezra dignity scoring across the five hylegiacal points with day-ruler, hour-ruler, and house bonuses.
Profection Year Calculator
Calculate your annual profection house, monthly profection timeline, and explore the 12-year cycle. Discover your lord of the year with a birth chart.
Frequently Asked Questions
What is the alcocoden?
The alcocoden, from the Persian al kadkudha meaning 'master of the house,' is the planet that rules the hyleg's degree and historically distributed the years of life in classical astrology. Identified after the hyleg, the alcocoden's planetary years and condition were used by Hellenistic and medieval astrologers to project the chart's vitality span. Modern astrologers treat it as a symbolic vitality marker rather than a literal lifespan predictor.
Can the alcocoden predict when I'll die?
No. The medieval technique that combined the alcocoden's planetary years with primary directions to anaretic degrees does not produce reliable lifespan predictions. Patrick Watson's statistical analysis of the method against celebrity death dates documents the failure pattern. Use the alcocoden as a vitality symbol, not a clock.
Why are there three sets of planetary years?
The Persian and Arabic tradition assigned each planet a lesser, middle, and greater year value, derived from astronomical periods. Which set applies depends on the alcocoden's condition: strong gives greater, neutral gives middle, weak gives lesser. The system is internally coherent; the problem isn't with the years themselves but with the medieval assumption that they project to a literal lifespan.
What's the difference between bound lord and almuten of the degree?
The bound lord is the single planet that rules the term (bound) where the hyleg falls. The almuten of the degree is the planet with the highest summed dignity points at that exact degree, factoring sign rulership, exaltation, triplicity, term, and face together. The Greek tradition uses the bound lord; the medieval tradition uses the almuten. Augurine defaults to the bound lord and shows both methods.
Does the alcocoden have to aspect the hyleg?
In the strict Ptolemaic reading, yes. A planet that doesn't aspect the hyleg can't release the chart's life force. In Bonatti's looser reading, the requirement softens. The calculator notes whether your alcocoden aspects your hyleg and flags it as 'fallen guardian' (the medieval term for a non-aspecting alcocoden) when it doesn't.
What if my alcocoden is afflicted?
Affliction (combust, retrograde, in detriment or fall, aspected by malefics) shifts the year selection from greater toward lesser. Read symbolically: the chart's distribution of vitality has friction in it. The native's life often involves working against constitutional resistance, restoring depleted reserves, or finding routes around blocks.
Is alcocoden the same as guardian angel?
Some traditions, especially the renaissance-magic strand transmitted via Cornelius Agrippa, identify the alcocoden with the native's guardian angel. This reading sits at the intersection of astrology and ceremonial magic; it's part of the historical record but not the dominant technical interpretation. Augurine treats the alcocoden as a planetary function, not a magical entity.
Your alcocoden's years activate on their own schedule
The alcocoden describes how your chart counts time. Replay maps when alcocoden-led chapters peaked across your life and where the next peak is building.