What constellation is Polaris in _ What constellation is Polaris in?

Which constellation does Polaris, which is often used to tell the direction, belong to?

Polaris belongs to Ursa minor. Polaris is a bright star in the northern part of the sky, very close to the north celestial pole, almost opposite the earth axis. Polaris is also called Beichen, Purple Palace and Purple Weiyuan. Purple is synonymous with Xuan, and Purple Palace is also the Xuan Palace. The female caller in the palace is Yin Dexing, who is the nine-day Xuan Nv of the Virgin of Chile. Some people think that God Hao Tian lives in Beichen. "Haotian God is called the Emperor and the Star of Beichen."

About 15000 to 13000 years ago, Polaris was named Vega because of Yan Zi Shi's Weaver Girl, which originated from the natural worship of ancient stars by ancient Han people. Therefore, it is named Polaris.

The expanded data is different from the western astronomical system centered on ecliptic coordinates. In ancient China, an astronomical system centered on equatorial coordinates was developed. In this system, Polaris is located in the north of the celestial sphere, which undoubtedly has a unique position. In ancient China, it was often used as a symbol of the emperor.

But Alpha Bear has not been the North Star since ancient times. Because the earth's rotation axis swings slowly periodically. Therefore, the position of the sky indicated by the north pole of the earth's rotation axis is also changing, and the "throne" of Polaris may also take turns to sit in the village.

Baidu encyclopedia-Polaris