What is the Sidereal Zodiac? In regard to Rasis or Signs, the Sidereal Zodiac is made up of 30 degree portions beginning with the Nakshatra of Aswini as measured from certain fixed stars.
Sidereal Zodiac - Sidereal zodiac moves with the constellations. When the constellation of Aries moved, the constellation of Pisces moved into the position it vacated. Sidereal now calls the area of the chart traditionally ruled by Aries Pisces.
The 12 zodiac signs, measured more by the fixed stars and the constellations, not the seasons. The zodiac signs are still measured as 30 degrees of arc in length, and the "beginning point" is somewhat arbitrary (for example, not based on a particular fixed star).
Sidereal Zodiac A Zodiac based on the placement of the stars, not the Vernal Equinox. It is used in Eastern, Hindu, or Vedic Astrology.
sidereal zodiac Based on the division of the circle of twelve constellations: Aries, Taurus, Gemini, Cancer, Leo, Virgo, Libra, Scorpio, Sagittarius, Capricorn, Aquarius and Pisces; the basis for sidereal astrology.
The ~, on the other hand, which is used by Vedic astrologers, is based upon the actual stars in the sky, and as such is partially observable.
The ~'s astrological sign dates are based on a moving Zodiac, not the fixed one we see in Western Astrology. Therefore, the ~ usually shifts almost one full sign from the fixed Tropical Zodiac.
In the ~ (used by Vedic astrologers) the constellations do correspond with the signs.
I think this is what you were asking anyway.
Fixed or ~. It does not take into account the degree of precession in fixing the position of planets. This is the system used in oriental or Vedic astrology.
~Zodiac based on actual positions of constellations in the heavens, as opposed to the Tropical Zodiac, which is a moveable format based on the seasons. The Tropical Zodiac defines the Vernal Point as the first degree of Aries, but the ~ allows it to precess.
Arguing for the ~: Kenneth Bowser
One topic that is sure to cause controversy amongst astrologers is that of whether the Tropical or ~ is most effective in practice. A recent forum debate revealed how passionately astrologers cling to alternate views.
Some Western astrologers use the ~ favoured by Indian ("jyotish") astrologers, which is based more closely on actual positions of constellations in the heavens, as opposed to the tropical zodiac, which is a moveable format based on the seasons.
The Tropical and ~s
About two millennia ago, these signs lined up neatly with the constellations of the same names. However, thanks to the precession of the equinoxes, the signs have moved about 25° west with respect to the fixed stars.
Expander, you are not at all alone in the astrological community by choosing to integrate traditional western astrology with the ~, and I will repeat what you've probably heard elsewhere that the two systems do not mesh.
Vedic astrology uses the ~ and Western astrology uses the tropical zodiac. There's a lot of debate on which is the correct zodiac. Vedic astrology offers a much more profound insight into our destiny and psyche. It has superior predictive techniques.
We have mentioned previously in this essay that the first Babylonian birthcharts were cast in the ~. Also it has been traditional for Hindu astrologers to use one or another ~.
The difference between the tropical and ~s is that the ~ used in Vedic astrology accounts for the slight wobbling of the earth on it's axis.
Indian or Hindu astrology uses ~s which is different from the tropical zodiacs used by western system. Using tropical system makes the calculation less authentic as in the tropical system; the connection between the zodiac sign and sky constellation is broken.
The Sun stays in Scorpio from 16 November to 15 December as per ~ which is followed by Vedic Astrologers and 23 October to 22 November as per Tropical Zodiac followed by Western Astrologers.
ver the years there has been a dispute over the Tropical vs ~ as to which zodiac is the right one. Actually, they both have their merits as each zodiac presents its own insights.
It employs the ~ or the zodiac of the fixed stars. This causes its sign positions to shift backwards about 23 degrees from tropical positions.
Some insisted that the ~ be used but Alice A. Bailey herself used the Tropical Zodiac. In the 1980s, I saw one of her hand-typed Soul's Purpose readings. I have always found the Tropical to work in my Soul's Purpose readings.
The ~ takes into account the precession of the equinoxes and is the zodiac used by astronomers. The Tropical is based on the traditional positions of the demarcations of the zodiac and is primarily used by astrologers.
There is no exact date for transitions, since the borders between the constellations are naturally vague, although when applied to the ~ they are regularised to 30° each and boundaries are clearer. Those who take the 30° segments as the boundaries consider that the age is dawning now.
In the ~, the Sun's relationship to the fixed stars is primary. People using a tropical zodiac developed the body of knowledge about Moon phase gardening. Western astrologers also use this.
Very few astrologers in the west use the ~ in place of the Tropical Zodiac in reference to Natal Astrology (birth horoscopes). These astrologers are called Siderealists. Also the ~ is used by most Indian astrologers who practice the ancient art of Vedic Astrology.
On the other hand, those who use the ~ tend to use the constellations that lie along the ecliptic as the primary reference point for their system, although there is some disagreement about the precise degree that should be used as the starting point.
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One could forcefully argue that this has nothing to do with culture lag, but is instead an argument in favour of the ~.
Jyotish: Indian (Vedic) astrology. This is based on the ~, as opposed to the tropical zodiac favoured by most contemporary Western Astrology.
Key Words: Words that encapsulate the meaning of an astrological factor. For example, Cancer: "I feel".
Nirayana System - Fixed or ~. It does not take into account the degree of precession in fixing the position of planets. This is the system used in oriental or Vedic astrology.
Ayanamsa - The difference between the starting point of the Tropical and ~s, due to the precession of the equinoxes. There are several in use in India today, but the official government-sanctioned Lahiri ayanamsha is the most widely used.
If you are using a PRECESSED chart, this is calculated using the ~ and the degree of your Return Sun will be slightly different than your natal Sun.
Ayanamsha: The difference between the Tropical and ~ in degrees.
Balava: One of the Karanas (half-lunar days) ...
The ~, used widely in India and in a small but dedicated group in the West, is based on the actual constellations of stars.
Even connoisseurs of astrology in the west accept the astronomical basis for precession of the equinoxes and the moving ~ in respect of World Ages.
Aries, the first sign, starts on the first day of Spring (vernal equinox). Most Asian astrologers (and a small minority of westerners) use the ~ based on the constellations. The two Zodiacs coincided about 2000 years ago, but have since slipped out of phase by almost one sign.
Valens tied the zodiac to the seasons, essentially creating the Tropical Zodiac, which cut its tie with the stars, or ~, another difference from the Babylonian zodiac.
See also: What is the meaning of Sidereal, Zodiac, Astrology, Planet, Sun?