Introduction of compass seat

One of the southern constellations. Latin name Pyxis, translated as compass, compass. Every year on March 2 1, go to Zhongtian at 8 pm. It is connected to Ophiuchus in the north, to Vela in the south, between the tail and the pumping station, and just at the midpoint between Ophiuchus Alpha (Ophiuchus I) and Carina. Part of the constellation is submerged in the Milky Way. The symbol of the compass is a small constellation composed of a group of rather dark stars. The brightest stars in the compass are three fourth-order stars, which is really a dark constellation without visible images. Residents in the area south of 53 north latitude can see the complete compass, while residents in the area north of 73 north latitude can't see the constellation. Compass, sail, stern and base are collectively called "South Four Ships".