Some "parazodiacal" constellations are also touched by the paths of the planets, leading to counts of up to 25 "constellations of the zodiac". Some other constellations are also mythologically associated with the zodiacal ones: Piscis Austrinus , The Southern Fish, is attached to Aquarius. In classical maps, it swallows the stream poured out of Aquarius' pitcher, but perhaps it formerly just swam in it. Aquila , The Eagle, was possibly associated with the zodiac by virtue of its main star, Altair. The following table compares the Gregorian dates on which the Sun enters:.
The theoretical beginning of Aries is the moment of vernal equinox , and all other dates shift accordingly. The precise Gregorian times and dates vary slightly from year to year as the Gregorian calendar shifts relative to the tropical year. Except for and , the vernal equinox has started on 20 March since , and is projected to until Because the Earth's axis is at an angle, some signs take longer to rise than others, and the farther away from the equator the observer is situated, the greater the difference.
Thus, signs are spoken of as "long" or "short" ascension. The zodiac system was developed in Babylonia , some 2, years ago, during the " Age of Aries ". Contemporary use of the coordinate system is presented with the choice of interpreting the system either as sidereal , with the signs fixed to the stellar background , or as tropical , with the signs fixed to the point vector of the Sun at the March equinox.
Western astrology takes the tropical approach, whereas Hindu astrology takes the sidereal one. This results in the originally unified zodiacal coordinate system drifting apart gradually, with a clockwise westward precession of 1. For the tropical zodiac used in Western astronomy and astrology, this means that the tropical sign of Aries currently lies somewhere within the constellation Pisces " Age of Pisces ".
The sidereal coordinate system takes into account the ayanamsa , ayan meaning transit or movement , and amsa meaning small part , i. It is unclear when Indians became aware of the precession of the equinoxes, but Bhaskara 2 's 12th-century treatise Siddhanta Shiromani gives equations for measurement of precession of equinoxes, and says his equations are based on some lost equations of Suryasiddhanta plus the equation of Munjaala. The discovery of precession is attributed to Hipparchus around BC.
Ptolemy quotes from Hipparchus' now lost work entitled "On the Displacement of the Solstitial and Equinoctial Points" in the seventh book of his 2nd century astronomical text, Almagest , where he describes the phenomenon of precession and estimates its value. The principle of the vernal point acting as the first degree of the zodiac for Greek astronomers is also described in the 1st century BC astronomical text of Geminus of Rhodes. Geminus explains that Greek astronomers of his era associate the first degrees of the zodiac signs with the two solstices and the two equinoxes, in contrast to the older Chaldean Babylonian system, which placed these points within the zodiac signs.
Ptolemy also demonstrates that the principle of the tropical zodiac was well known to his predecessors within his astrological text, the Tetrabiblos , where he explains why it would be an error to associate the regularly spaced signs of the seasonally aligned zodiac with the irregular boundaries of the visible constellations:. These events can be useful, for example, to estimate the cross-sectional dimensions of a minor planet , or check a star for a close companion.
January 15 Birthday Horoscope 2018-12222
The Sun's placement upon the vernal equinox, which occurs annually around 21 March, defines the starting point for measurement, the first degree of which is historically known as the " first point of Aries ". Zodiac signs have never been used to determine the boundaries of astronomical constellations that lie in the vicinity of the zodiac, which are, and always have been, irregular in their size and shape. The use of the zodiac as a means to determine astronomical measurement remained the main method for defining celestial positions by Western astronomers until the Renaissance, at which time preference moved to the equatorial coordinate system , which measures astronomical positions by right ascension and declination rather than the ecliptic-based definitions of celestial longitude and celestial latitude.
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The word "zodiac" is also used in reference to the zodiacal cloud of dust grains that move among the planets, and the zodiacal light that originates from their scattering of sunlight. In Unicode, the symbols of zodiac signs are encoded in block "Miscellaneous Symbols": . From Wikipedia, the free encyclopedia. This is the latest accepted revision , reviewed on 5 October For the East Asian zodiac based on the Jovian orbital cycle, see Chinese zodiac. For other uses, see zodiac disambiguation. Further information: Former constellations.
Further information: Babylonian star catalogues and MUL. Main article: Astrological sign. Further information: Axial precession , Epoch astronomy , Sidereal and tropical astrology , Astrological age , and Ayanamsa.
Zodiac Signs: Know All About Your Sun Signs
Astronomical symbols Chinese zodiac Circle of stars Cusp astrology Elements of the zodiac. Oxford Dictionaries. Oxford University Press. Retrieved 19 September The Signs of the Zodiac. Wilcox, London, p. See also Lankford, John; Rothenberg, Marc History of Astronomy: An Encyclopedia. The Almagest. Translated and annotated by G. Toomer ; with a foreword by Owen Gingerich. The introduction of the uniform zodiac", Archive for History of Exact Sciences , 64 6 : —, doi : The Mesopotamian traditions.
Astronomical Data Service. Page Lennart English name: The Maiden or Virgin. Virgo Dates. English name: The Scales. Libra Dates. English name: The Scorpion. Scorpio Dates. English name: The Archer. Sagittarius Dates.
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- January 15 Zodiac - Complete Birthday Horoscope & Personality Profile!
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English name: The Goat or Sea-Goat. Capricorn Dates. English name: The Water-Bearer. Aquarius Dates. English name: The Fish. Pisces Dates. If you were born on one of the cusp dates given above, your sun may be on the very cusp the starting point of one Zodiac sign, or right by the end of the previous sign. You need to check your exact horoscope, because on those dates it depends on what time of day you were born — and in what place. Now, If you were born when the sun was at the very end of a Zodiac sign, you probably have a mixture of that and the next star sign in your character.
The strongest is not equal to the most typical, though.
Birthday Compatibility (zodiac)
A Zodiac sign is its most typical at the part of it decan corresponding to its quality: cardinal, fixed or mutable. Often practical, you thrive when you know exactly what you have to do but on the long term, in life, you prove to be more creative than you think you are. Prepare to read a detailed profile analysis in the following rows. The zodiac sign for January 15 is Capricorn. Astrological symbol: Goat. This symbol is representative for those born December 22 - January 19, when the Sun transits the Capricorn zodiac sign. It suggests the stubbornness but also the simplicity and responsibility of these natives.
The Capricorn Constellation is placed between Sagittarius to the West and Aquarius to the East on an area of sq degrees.
In Greece it is called Aegokeros and in France goes by the name Capricorne but the Latin origin of the January 15 zodiac sign, the Goat is in the name Capricorn. Opposite sign: Cancer. This suggests that this sign and Capricorn are complementary and placed across each other on the astrological wheel, meaning courage and generalization and some sort of balancing act between the two.
Modality: Cardinal. This indicates philosophy and productivity and also how warm natives born on January 15 truly are. Ruling house: The tenth house. This house rules over career, virility, paternity and the perceptions of others. It reflects the willful male figure but also the choices in life that lead to a career or a certain social status, also showing how keen Capricorns are in this regard.
Ruling body: Saturn. This connection seems to suggest bountiful and protection. Saturn is one of the seven classical planets that are visible to the naked eye. This also shows a focus on determination. Element: Earth. This element symbolizes organization and a sense of reasonability and is considered to benefit those under the January 15 zodiac sign. Earth also gets new meanings in association with the other elements, shaping things with water and fire and assimilating air. Lucky day: Saturday. Under the governing of Saturn, this day symbolizes desire and stability.
It is suggestive for the Capricorn natives who are funny. People born on January 15 are romantic and dependable. They seem to be interested in the concepts behind art and philosophy although they are practical beings and also have an attraction towards technicalities and science. They dislike dealing with unserious people and having to postpone their plans.
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They feel at their ease when they can show how disciplined they are and when they have well defined tasks that they can work at. Positive traits: Ingenious and practical, these natives have a lot of energy but also know when to be all calm and composed. Capricorn people are usually shy and controlled but they also have an aspiring and hard working nature. Those born under this sign are also cautious when it comes to serious things and humorous and entertaining when their spending time with their friends and family.
Negative traits: One of the things Capricorn needs to learn is to stop being so naive and trusting, not everyone has the best motives. Those born on this day are overly circumspect, strict and pessimistic. They hardly embrace transformation and adventure. They always seem to have this fixed and skeptical behavior whenever they deal with something fun, risky or simply new. Lovers born on January 15 are reliable and romantic. They are attracted to energetic people who can be as dependable as they are. When they decide to commit they do it for a lifetime.
They are attracted to intelligent and trustworthy persons whom can offer the same degree of reliability as them.