How are the twelve constellations divided? I was born in Gregorian calendar165438+1October 26th. What seat is this?

Speaking of how to understand the definition of the ecliptic, first of all, our rough definition is that the intersection of the earth's orbital plane and the celestial sphere (cosmic background) is a great circle. Seen from the earth, the twelve constellations are just on this circle, so they are called the zodiac. The first point is the phenomenon under this definition.

Obviously, the ecliptic is related to the orbital plane of the earth's revolution. The revolution of the earth is not actually static. The revolution of the earth will change periodically under the gravity of other planets and the moon, so its projection circle on the celestial background will also change periodically. This change period is the ecliptic period in the second view, which is also the precession period. Therefore, the latest definition of the ecliptic is limited to a certain moment, that is, any moment. The orbital plane that only considers long-term motion is called the instantaneous average orbital plane, and the great circle where this plane intersects the celestial sphere is called the ecliptic.

signs of the zodiac

The sun runs from west to east on the ecliptic and circles the sky once a year. There are 12 constellations on a belt on both sides of the ecliptic. They are Aries, Taurus, Gemini, Cancer, Leo, Virgo, Libra, Scorpio, Sagittarius, Capricorn, Aquarius and Pisces. People on earth can see them one after another in a year.

Babylonians observed these constellations for a long time, determined the ecliptic through observation, and divided the ecliptic into 12 equal parts, each equal part was 30 degrees, which was called 1 segment. The sun travels around the ecliptic in 12 months/cycle, so it travels on the ecliptic every month 1 segment. In the eyes of the ancients, the sun was Apollo, and its resting place must be a magnificent palace. Therefore, they called the 1 section of the ecliptic 1 palace. In this way, the section 12 on the ecliptic becomes the "zodiac". The names of the zodiac signs are the same as those of the 12 constellation near the ecliptic, namely Aries, Taurus, Gemini, Cancer, Lion, Virgo, Libra, Scorpio, Sagittarius, Capricorn, Aquarius and Pisces.

Although the names of the zodiac signs are the same as those of the 12 constellation near the zodiac signs, they are essentially different. The zodiac indicates the position of the sun on the ecliptic, and the size of each constellation is fixed. It's all 30 degrees, and the time when the sun enters each house is basically fixed. Now the sun comes to the vernal equinox on March 2 1 every year and enters Pisces Palace. Around June 22, I came to the summer solstice and entered the twin uterus; On September 2 1 day, I came to the autumnal equinox and entered the virgin palace. 65438+Come to the winter solstice around February 22nd and enter the Sagittarius Palace. It takes a month for the sun to enter each house, so in the month from March 2 1 to April 20, the sun enters Aries, and the person born this month is Aries. A month later, from April 20th to April 2nd1day (Grain Rain), the sun began to enter the second house, and people born during this period were Taurus ... and so on. On March 2 1 day, the sun started its journey from Aries again, and it circulates once a year ... so you should know what constellation you are, right? 165438+1October 26th, after Scorpio, there are dried shrimps. .......