How are constellations divided? How are d_ constellations divided?

Constellations are divided according to the date of birth of the solar calendar as follows:

Aries? ( 03/2 1 - 04/20 )

Taurus? ( 04/2 1 - 05/20)

Gemini? ( 05/2 1 - 06/2 1)

Cancer? ( 06/22- 07/22)

Leo? ( 07/23 - 08/22)

Virgo? ( 08/23 - 09/22)

Libra (09/23- 10/23)

Scorpio? ( 10/24 - 1 1/22)

Sagittarius (11/23-12/21)

Capricorn (12/22-0119)

Water bottle: 0 1/ 20- 02/ 18

Pisces (02/ 19- 03/20)

Extended data:

The origin of constellations

Western constellations originated in Babylon, one of the four ancient civilizations. It is said that the so-called Zodiac 12 constellation has more than 20 constellation names, and Mesopotamia was born about 5,000 years ago.

Since then, the Babylonians have continued to divide the sky into many regions and put forward new constellations. Around 1000 BC, 30 constellations have been proposed. Ancient Greek astronomers supplemented and developed the Babylonian constellation and compiled the ancient Greek constellation table.

In ancient China, Sanyuan, which is near the North Pole, was defined as a middle official, while Erbasu was actually subdivided from four elephants. The star area south of Erbasu was called a foreign official, that is, "middle official+four elephants+foreign officials", which was just one of the many ways to divide the star areas in ancient China.

In addition, there are many ways to divide the stars into seven areas, such as "five beasts+middle officials+foreign officials" and "nine wild+middle officials+foreign officials" which are divided into 1 1 area, but the division method of "middle officials+four elephants" is widely spread.

In ancient China, the sky was divided by star officials. The earliest records of star officials are Sima Qian's Historical Records and Tian Guan Shu, among which 9 1 has more than 500 star officials. By the Sui Dynasty, there were 283 star officials recorded in Song of Heaven, belonging to one of the three yuan or twenty-eight lodging houses.

Sanyuan refers to the three regions surrounding the Arctic sky, namely Ziweiyuan, Taiweiyuan and Tianshiyuan, which are divided into four elephants around the ecliptic and the celestial equator, and each elephant is subdivided into seven regions of the four elephants, collectively called Twenty-eight Hostels.

Baidu encyclopedia-constellation