Where is the constellation?

In order to facilitate research, people divide the starry sky into several regions, which are called constellations. China has long divided the sky into three walls and twenty-eight nights. The records in Historical Records Tianguan are quite detailed. Sanyuan is the three areas around the north celestial pole, namely Ziweiyuan, Taiweiyuan and Tianshiyuan. Twenty-eight lodges are distributed in 28 areas near the ecliptic, that is, seven lodges in the East: Jiao, Kang, Shi, Fang, Xin, Wei and Ji; Seven nights in the north: fighting, cows, women, emptiness, danger, rooms, walls; West Seven Nights: Kui, Lou, Stomach, Zan, Bi, Gou, Shen, South Seven Nights: Well, Ghost, Willow, Star, Zhang, Wing, Qi. Around 3000 BC, the Babylonians divided the brighter stars into several "constellations". The ancient Greeks mainly named their constellations after mythical figures or animals. In the 2nd century A.D., Greek astronomers had determined the name of Polaris to a great extent. It was not until/kloc-the successful voyage around the world in the 6th century and the observation by navigators that the 48 constellations in the southern sky were determined. 184 1 year, J.F. Herschel put forward the constellation boundary, with the equator as the boundary. 1928, the international astronomical union announced 88 constellation schemes, which stipulated that the right ascension of 1875 and the right ascension based on the vernal equinox and equator were the constellation boundaries. The whole day is divided into 88 constellations, big and small.