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category: Astrology Encyclopedia

A set of Tables of Houses for Lat

Definition

“A set of Tables of Houses for Lat” refers to a set of astrological house tables prepared for a particular terrestrial latitude, with “Lat” functioning as an abbreviation for latitude. Before astrology software, astrologers used such printed tables to convert local sidereal time into house-cusp positions for a chosen house system. Separate tables were needed because the relationship between the ecliptic and the local horizon changes with geographic latitude.

Astrological Meaning

Tables of Houses are calculation tools rather than interpretive symbols. They help establish the degree placed on each house cusp, including the Ascendant and Midheaven, for a specific time and location. Those cusps divide a horoscope into areas associated with topics such as identity, resources, relationships, vocation, and community. The resulting positions can vary according to latitude and the house system used, so the table must match the astrologer’s chosen method.

Why It Matters

Accurate house tables were essential to traditional chart construction and remain useful for understanding how horoscopes are calculated. Choosing a table for the wrong latitude can shift house cusps and may alter which houses contain particular planets, affecting interpretation. Studying these tables also clarifies that house placement depends on birth time, location, and calculation method—not only on zodiacal position. Modern software usually performs this work automatically, but the underlying geographical and astronomical principles still matter when checking a natal chart or comparing house systems.

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Horizontal

Definition

Horizontal refers to the horizon-based division of an astrological chart. The line running from the Ascendant to the Descendant represents the local horizon at a particular time and place, separating the chart’s upper, visible hemisphere from its lower, unseen hemisphere. In most chart layouts, the Ascendant appears on the left and the Descendant on the right.

Astrological Meaning

The horizontal division helps astrologers assess hemisphere emphasis. Planets above the horizon, generally in houses seven through twelve, may emphasize outward engagement, public circumstances, or experiences involving other people. Planets below the horizon, generally in houses one through six, may place more attention on personal development, private life, and inner foundations. This is a broad interpretive pattern rather than a fixed rule. The horizon also determines whether the Sun is above or below the Earth, a key consideration when identifying a day or night chart through the traditional doctrine of sect. The Ascendant–Descendant axis adds a separate self-and-other polarity within the same line.

Why It Matters

Understanding the horizontal structure makes a chart easier to orient and prevents confusion about upper and lower hemispheres. It can clarify whether a horoscope leans toward visible participation or private cultivation while preserving the importance of signs, houses, aspects, and planetary condition. Because the horizon depends on birth time and location, accurate chart data is especially important when using it for house placement, angles, and sect.

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Regiomontanus

Definition

Regiomontanus is a quadrant house system named after the fifteenth-century mathematician and astronomer Johannes Müller von Königsberg, who was known by the Latin name Regiomontanus. The method divides the celestial equator into twelve equal sections and projects those divisions onto the ecliptic using great circles drawn through the north and south points of the horizon. The Ascendant and Midheaven remain important reference points, while intermediate house cusps vary according to time and location.

Astrological Meaning

In chart interpretation, Regiomontanus determines which houses contain planets and where the intermediate cusps fall. Because houses describe areas of experience, changing from another system to Regiomontanus can shift a planet into a neighboring house and alter its contextual emphasis without changing its sign, degree, or aspects. The system became especially influential in traditional horary astrology and is closely associated with the methods later popularized by William Lilly.

Why It Matters

Regiomontanus matters because the chosen house system can shape practical chart judgment, particularly when a planet lies near a cusp. Astrologers may select it for historical consistency, horary technique, or personal practice. At extreme latitudes, its cusps can become highly unequal or difficult to calculate, so comparison with other systems may be useful. A sound interpretation states which house system is being used and treats house placement as one factor among planetary condition, rulership, aspects, and chart context.

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Campanus

Definition

Campanus is a quadrant house system used to divide an astrological chart into twelve houses. Traditionally associated with the thirteenth-century mathematician Campanus of Novara, it divides the prime vertical—the great circle passing through the east and west points and the zenith and nadir—into equal thirty-degree sections. These divisions are then projected onto the ecliptic to establish the house cusps.

Astrological Meaning

In a Campanus chart, planets retain their zodiac signs and degrees, but their house placements may differ from those produced by Placidus, Whole Sign, or Equal House systems. Astrologers using Campanus often value its spatial approach because it relates house division to the observer’s local horizon and prime vertical. Interpretation follows standard house symbolism: a planet’s house describes the area of life through which its qualities may be expressed, while its sign and aspects provide additional context.

Why It Matters

The selected house system can shift planets near cusps into neighboring houses, changing interpretive emphasis without altering the underlying planetary positions. Campanus therefore matters when comparing charts, studying angularity, or deciding which house framework best suits an astrologer’s method. At extreme latitudes, its cusps can become highly unequal, so chart location and comparison with other systems may be useful before drawing conclusions.

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Tables of Houses

Definition

Tables of Houses are reference tables used to calculate the zodiacal degrees appearing on the cusps of astrological houses. Organized by local sidereal time and geographic latitude, they provide values for a particular house system, such as Placidus or Regiomontanus. Astrologers traditionally consulted them when constructing charts by hand.

Astrological Meaning

Tables of Houses do not carry an interpretation of their own. Their astrological significance comes from establishing the house cusps, especially the Ascendant and Midheaven, that organize a chart into areas of experience. Once calculated, these cusps help an astrologer determine which planets occupy particular houses and which signs govern them. Results can differ between house systems, so the table used must match the astrologer’s chosen method.

Why It Matters

Before astrology software, these tables were essential tools for producing accurate natal, event, and horary charts. They remain useful for understanding how chart calculations work and for checking computerized results. Because the correct latitude, time conversion, and house system all matter, studying Tables of Houses also highlights the distinction between astronomical calculation and astrological interpretation. Small input errors may shift cusps and, in some cases, change house placements.

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Syzygy

Definition

Syzygy is an astronomical alignment of three celestial bodies. In astrology, the term usually refers to the alignment of the Sun, Earth, and Moon at a new moon or full moon. In a geocentric chart, these phases appear respectively as a Sun–Moon conjunction or opposition. Traditional astrologers often use “the syzygy” to mean the lunation immediately preceding a birth or another event.

Astrological Meaning

The prenatal syzygy is interpreted by examining whether it was a new or full moon, its zodiacal sign, house placement, degree, ruler, and major aspects. A preceding new moon may emphasize emergence, initiation, or a developing cycle, while a preceding full moon may suggest culmination, visibility, or the integration of opposing factors. Some traditional methods also consider the syzygy when assessing chart rulers, life themes, or the chart’s overall condition. If the lunation occurred near the lunar nodes, it may also have been an eclipse, adding another distinct interpretive factor.

Why It Matters

Syzygy connects an individual chart with the larger lunar cycle active before the chart’s beginning. It can provide background context rather than replacing the Ascendant, luminaries, or other natal factors. Used carefully, it helps astrologers place a birth or event within a broader pattern of beginnings, culminations, and changing levels of illumination.

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