Why are there so many constellations?

Constellation originated in Babylon, one of the four ancient civilizations. The Babylonians divided the sky into many regions and called them "constellations", but at that time constellations were of little use and were rarely found and named. The constellation 12 on the ecliptic was originally used to measure time, not to express people's character as it is now. 1922, the General Assembly of the International Astronomical Union decided to divide the sky into 88 constellations, and their names basically followed the historical names. 1928, the international astronomical union officially announced the names of 88 constellations. These 88 constellations are divided into three celestial regions, 29 in the northern hemisphere, 47 in the southern hemisphere, and near the equator and ecliptic 12. Constellation in astrology: Just as some peoples in East Asia define a person's zodiac according to the animals represented by the year of birth, in many countries, a person's birth month corresponds to the constellation. Birth constellation comes from astrology, trying to explain people's character and destiny by using their birthplace, birth time and celestial position. The birth month corresponds to the sun constellation as follows. Because the orbit of celestial bodies is different from the Gregorian calendar, the difference between different years will be 1-2 days, which is consistent with the distance between "solar terms" in the twenty-four solar terms of the China lunar calendar. The calculation of solar term time is accurate to minutes (not midnight), which is also the boundary of the constellation and changes every year. Constellation name ecliptic time (general cognition) Star time The solar terms corresponding to the constellation time of the sun are March 21-April1April 91May1April 51September-May 13 vernal equinox in Aries. May/KOOC-0/June-June/KOOC-0/May/KOOC-0/April-June/KOOC-0/9 Grain Rain-Xiaoman Gemini the day before May 2/KOOC-0/-June 2/KOOC-0/June/KOOC-0/6-7. Day-July 22nd, July 16-August 15, July 2nd1day-August 09, summer solstice-the day before the Great Summer, July 23rd-August 22nd, August 16-September 65438+August 5th. June 23rd-September 23rd September 16- 10 10/5 September16-10/October 30th Summer-Libra September 30th. 38+001October 31-165438+1October 22 autumnal equinox-first frost Scorpio1kloc-0/October 24-1/kloc. 5438+065438+1October 29th, first frost-Ophiuchus-165438+1October 30th-65438+February 17- Sagittarius160. +04 65438+February 18-065438+ 10/8 Snow-Capricorn 65438+February 22-065438+1October 65438+/kloc-0 Winter Solstice-Aquarius 065438+1October 20-February1February 81May-March1April1June-March/kloc-0. 5438+04 March 12-April 18 Rain-the day before the vernal equinox This is just a timetable. The constellation 12 generally refers to the zodiac constellation12 (ecliptic time), that is, there is no Ophiuchus. So the constellation is calculated according to the Gregorian calendar (solar calendar) of the year of birth. I hope it helps you! So the constellation is 12.