Sagittarius is made up of several stars. What is the specific structure?

There is no "Sagittarius" in the naming of astronomical norms, but Sagittarius. The image of its constellation myth and legend is Kai Long Xing, a wise centaur, and calling it Sagittarius obviously lost important information (only written in Japanese).

Sagittarius is a specific area on the celestial sphere. In fact, it is an infinite cone-shaped radiation area centered on the earth. It is not rigorous to say which stars make up a constellation.

The main body of Sagittarius corresponds to China's star officials Jisu, Dousu and Jianshe, among which Jisu III (Sagittarius ε) and Dousu III (Sagittarius σ) are second-class stars.

Western Saturn constellation and its connection

Sagittarius Sky Zone corresponds to China Star Officer (the bright star in the circle is Jisu III, the upper left six stars are Dousu, and the upper left six stars are built).

4 The eastern part of Sagittarius (on the left side of the map) is relatively dark, and there are no bright stars above 4.5, which mainly correspond to several star officials in China, such as celestial pole, dog country, dog country and Tianyuan (Tianyuan has three stars in the bottom center of the above picture).