Prime Vertical
The great circle which passes through the East and West points of the Horizon, and the Zenith a...
Prime VerticalPtolemaic Aspect
Ptolemy distinguished four major aspects between zodiac signs: sextile, square, trine, and oppositio...
Ptolemaic AspectQuadrant
One of four quarters of the Celestial Sphere transposed to the horoscope as three houses. It is defi...
QuadrantQuadrate
Another name for a square aspect. ...
QuadrateQuadruplicity
The set of four signs with the same quality, either Cardinal, Fixed, or Mutable. These groups are fo...
QuadruplicityQuerent
The person who asks the horary question....
QuerentQuesited
(L. quaestio, past participle of the above) Horary astrology - What the Querent queries. The person ...
QuesitedQuincunx
The 150 degrees aspect. Ptolemy writes of disjunct signs in Tetrabiblos I.16, signs which have no "f...
QuincunxRadical
adj. [L. radix, root] The birth chart, also known as the radical chart. In horary astrology, a radi...
RadicalRadius Vector
Distance at any given time of a planet from the Sun's Centre. Kepler's second law states that even t...
Radius VectorRational Horizon
the Geocentric Horizon projected into space. Identical to the Astronomical Horizon....
Rational HorizonRefranation
When an applying aspect is 'refrained' from reaching perfection. Often when one of the significators...
RefranationRegiomontanus House System
A system of house division based on dividing the quarters of the Equator defined by the Ascendant/De...
Regiomontanus House SystemRegulus
Cor Leonis (the heart of the lion). A fixed star, the most "royal" of the four royal stars. It is r...
RegulusRetrograde
When a planet appears to be moving backwards (westward) due to the relative speed of the earth to th...
RetrogradeRight Ascension
Hours measured along the celestial equator, starting from the March equinox (intersection of the ecl...
Right AscensionRising Planet
Planets are rising toward the Ascendant in the axial rotation of the chart. Usually a planet within ...
Rising PlanetRising Sign
The astrological sign that is on the eastern Horizon at the moment of birth; the sign of the zodiac...
Rising SignRuler
The planet assigned as influential to one or two of the signs. ...
RulerSeparating Aspect
An aspect that has already perfected and where the planets are now moving away from the earlier exac...
Separating AspectSerpentis
Considered a malefic degree of the zodiac. It happens to be occupied now (Epoch 1990) by the fixed s...
SerpentisSextile Aspect
A 60-degree aspect. One of the major or Ptolemaic aspects. Traditionally a soft aspect. Unites signs...
Sextile AspectSidereal Day
The True rotation of the Earth measured by two successive transits of a fixed star over the observer...
Sidereal DaySidereal Time
The Hour Angle of the Vernal Point. Mean Sidereal Time is measured by the diurnal motion of the mean...
Sidereal TimeSidereal Year
Time required for the Earth to return exactly to the same position with reference to the same fixed ...
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