# Astrology Definitions – T

Tables of Houses
Tables showing the degrees of the Signs which occupy the cusps of the several Houses in different latitudes for every degree of Right Ascension, or for every 4 minutes of Sidereal Time. Generally available are those by Dalton (1913), Raphael (1920) and Hugh Rice (1935).

There is much argument anent the various systems of calculating the cusps of the intermediate Houses, until one wonders sometimes why not use a stop watch to locate the degree on the horizon every two hours. Of course it would have to be done over again in all latitudes, and besides it would not be very scientific. Nevertheless the general opinion is that none of the existing methods are correct for all latitudes, even though they may be near enough for practical purposes. The four best known systems are as follows:

Campanus.
The vertical circle from the zenith to the cast and west points of the horizon is trisected. Through these points are drawn great circles, the House circles, from the north and south points of the horizon. Thus the intersections will be at altitudes of 30° and 60° above the horizon, on both cast and west branches of the prime vertical. This divides the sky into six great sectors. Similarly divide the hemisphere below the horizon. The house cusps are the points at which the ecliptic at that moment intersects the horizon.
Regiomontanus.
The celestial circle is trisected, instead of the prime vertical, and great circles extend from north and south points of the horizon to the points of trisection. The house cusps are at the points at which the ecliptic intersects the horizon. At the Equator the two systems give the same cusps, the disparity increasing as one approaches the Earth’s poles.
Horizontal.
Starting with great circles at the meridian and ante-meridian, the horizon and the prime vertical, add other great circles from Zenith to Nadir which trisect each quadrant of the horizon. The cusps will then be the points at which on a given moment the ecliptic intersects the vertical circles.
Placidus
Instead of using great circles, the diurnal motion of the Earth causes a celestial object to intersect the cusp of the 12th House, after a sidereal-time interval equal to one-third of its semi-diurnal arc; to intersect the cusp of the 11th House after a sidereal-time interval equal to two-thirds of its semi-diurnal arc; and to culminate at the meridian after an interval of sidereal time that corresponds to the semi-diurnal arc. The semi-arc from the meridian that intersects the Eastern horizon gives the Ascendant; and the 2nd and 3rd house cusps are similarly extended below the horizon. The Placidian cusps are in almost universal use at the present time. Maurice Wemyss takes exception to the Placidus cusps on the grounds that the Ascendant is located according to one system and the intermediate cusps by another. He prefers what he terms the “Rational Method” of Regiomontanus.

A set of Tables of Houses for Lat. 40° N., which is approximately the latitude of New York, in which can be seen a comparison of these four systems, is to be found in the American Astrology Ephemeris for the year 1941. The Tenth House is common to an four systems, and this is theoretically correct. The discrepancies show in the intermediate cusps between the IC and MC. The Ascendant is also the same for three of the four systems, but the Horizontal system has its own Ascendants. Different Latitudes require different sets of tables. Published volumes containing Tables of Houses for all Latitudes are available, most of them, however, confined to the Placidus system, which is the one most generally used. The one by Hugh Rice is the most recent and the most elaborate, with the cusps computed to several decimals.

Unless you have a birth moment that is correct to the minute, and beyond doubt, detailed methods are futile and misleading, and one might well confine himself to whole degrees and ignore the decimals. By means of these tables of houses computed for different latitudes, one is able to ascertain what degrees of the zodiac appeared upon the Ascendant and the various House cusps on any hour of any day, as calculated from the siderial time at noon of that day as indicated in the ephemeris. Actually the tables may be said to divide distance by time, showing how many degrees of the equator will pass the ASC or MC, as if the planet were there. It is to be understood, of course, that this is a rule-of-thumb short-cut for average use when one is not too certain of the reliability of his birth data, and is not to be used when seeking exactness.

T-cross
v. Cosmic Cross.
Taurus
The second sign of the zodiac. v. Signs.
Telepathy
Transmission of thoughts from one to another of two minds that presumably are in attunement or affinity, without the aid of any orthodox means of communication through ordinary channels of sensation. It is generally supposed that an accent on Neptune confers sensitive receptivity to telepathic communications. This may occur at close range or over a long distance.
telescope
An optical instrument assisting the eye or camera in viewing or photographing distant objects, magnifying the celestial bodies, and concentrating a larger beam of light to render the image more distinct. Some ancient references suggest that it was known to the Greeks and Romans. In the Pyramid is found evidence that at some period the Egyptians had a form of reflecting telescope. Refracting telescopes were first made in Holland in 1608. Hearing about them, Galileo made one for himself and in 1620 began his experiments. The earliest known reflecting telescope was that perfected by James Gregory of Edinborough in 1663.
Temporal Houses
2, 6, 10. v. Houses.
Terminal Houses, The
4th, 8th, 12th Houses (q.v.), corresponding to the Signs of the Watery Triplicity. So called because they govern the terminations of three occult or mysterious phases of life: the 4th, the end of the physical man; the 8th, the liberation of the soul; and the 12th, of the hopes to which the native secretly aspires.
Testimony
A partial judgment based upon the influence of a certain planet as conditioned by Sign and House, strength of position and aspects, or of a certain configuration of planets in a Figure. The synthesis of several testimonies constitutes a judgment. The term as used by Ptolemy is approximately synonymous with Argument.
Tetrabiblios
Literally four books. The oldest record of the astrological system of the ancients which has survived. It dates from about 132-160 A.D. In it the author, Claudius Ptolemy, the great Egyptian mathematician, says that it was compiled from “ancient” sources. v. Ptolemaic Astrology.
Tetractys – ten symbolic dots
A theory advanced by Pythagoras, who affirmed the existence of ten bodies in our Solar System. The ancients knew only seven such bodies, but modern astronomers have discovered the other three: Uranus, Neptune and Pluto.

This symbol as used by Pythagoras consisted of ten dots arranged in triangular form, as illustrated. By connecting the dots in different ways many rectangles and triangles were formed, all intimately associated with the Pythagorean mathematical system by means of which he explains his conception of the truths of the universe. This may explain the missing apex of the pyramid, as can be seen in the great seal of the United States, as printed on some of the paper currency.

Thema Coeli
The figure of the heavens.
Throne
Some astrologers who lean to hyperbole rather than consistency and lucidity describe a planet as on its throne when in a Sign of which it is the Ruler. In a more ancient and more logical usage it was applied to a planet posited in that part of a Sign wherein it had more than one Dignity.
Time
The measurement of time is inseparable from considerations of place, and of a point of reference. The establishing of the actual moment of an occurrence, and its statement in terms of Universal Time, is one of the most difficult problems with which the astrologer deals, because of the prevalent neglect on the part of those who make the record of the moment of an event, to qualify it by stating in what manner of time it is noted: whether apparent solar time, as shown on a sundial; mean time, as shown by a clock adjusted to the meridian of the place; local Standard Time, as shown by a clock adjusted to a Standard time meridian, and if so, which one; or whether in Daylight Saving Time, War Time, Double Summer Time; and so on.
Transit
The ephemeral passage of a planet over the place of any Significator, moderator or planet, or any point where it forms an aspect thereto, whether in a radix, progressed, Solar Revolution or Horary Figure. Transits are taken from the ephemeris for the current year. Generally speaking the passage of the benefic planets over, or in aspect to, the radical and progressed places of the several Significators is favorable; of the malefics unfavorable.

Kuno Foelsch, Ph.D., in his work on Transits, which actually treats of the Solar Revolution, concurs in the suggestion that during the Middle Ages it became necessary to devise some system of approximating future conditions, for the reason that Ephemerides calculated for years in advance were not then obtainable. Speaking of Transits, he expresses the confident belief that “other methods will eventually disappear, especially those which are dependent upon hypothetical elements which have no connection with the actual astronomical positions of the planets as recorded by scientifically operated observations.”

Transaltion of Light
The conveyance of influence which occurs when a transiting planet, while separating from an aspect to one planet is found to be applying to an aspect to another, in which event some of the influence of the first aspected planet is imparted to the second aspected planet by a translation of light. For example, assume an Horary Figure in which Jupiter or Saturn, the Significators of the parties to the negotiation of an agreement, are in no aspect to each other; but Venus while separating from Jupiter is applying to an aspect of Saturn. There results a translation of light from Jupiter to Saturn, which is a powerful testimony that Venus represents a person or an idea that will bring about a settlement. The nature of the aspect, and of the aspecting and aspected planets through which the translation is accomplished, determines whether the outcome will be fortuitous.
Transmutation
The advantageous utilization, on the part of a controlled and developed character, of an astrological influence which otherwise might exert a destructive and disruptive force. It is a term borrowed from the alchemists who sought to transmute baser metals into gold, whereby to suggest a process of spiritual alchemy through which a baser emotion is dedicated to a noble purpose.
Trigon
A term applied to the three signs of the same triplicity.
Trimorion
An aspect in Mundo which embraces three Houses, hence a Mundane square, but which in some instances may actually extend to as much as 120°; hence in Primary Directions it was sometimes called the killing arc, since 120 years were deemed the natural limit of life.
trine
The aspect representing an angular relationship of 120° or one-third of a circle between two planets. Planets in trine aspect generally occupy the same number of degrees in signs four signs apart.
triplicity
One of four fixed groups of signs, each containing three planets. The four triplicities relate to the four elements earth, air, fire, and water. They are concerned with tendencies of the temperament.
Tropical Signs
Cancer and Capricorn.
Tropical Year
The Solar Year; the period of 365d, 5h, 48m, 4.5s, during which the Sun’s centre passes from one Vernal Equinox to the next. Because of the precession, it is shorter than the Sidereal Year by 20m, 23.5s.
Twilight
The illumination of the Earth’s atmosphere after sunset, visible until the Sun is about 18° below the horizon. Its duration depends upon the time required for the Sun to traverse this distance. At the Equator this requires about an hour at any time of year, but during Summer lasts for a much longer period. As one passes beyond 40° N. latitude, the interval is lengthened in the Summer and shortened in the Winter.

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