How many constellations are there all day now?

There are countless stars in the sky. In order to facilitate research and observation, people divide the starry sky into several regions, and each region is a constellation. Just as a province is divided into many counties and cities, each constellation is given the name of a person, animal or artifact in a fairy tale. Western constellations first began in Babylonian times. In Ptolemy in the second century, the whole day was divided into 48 constellations, and then about 40 constellations were added, but the constellations were constantly changing and supplementing. 1930, the international astronomical society announced that the whole day would be divided into 88 constellations and their boundaries, including 28 in the north, 0/2 in the ecliptic/kloc, and 48 in the south.