The Polaris, which is often used to tell the direction, belongs to which constellation.

It has been different since ancient times because Polaris has been changing since ancient times.

Today's Polaris is located in Ursa minor in today's western constellation system. Its western name is Ursa minor α, which means the brightest star in this constellation. The official Chinese name "Dog" is located in the ancient star official system in China, which means the first star of a dog.

In the primitive society of 3000 BC, Polaris was a star named Right Pivot, which was located in the right wall of Wei Zi in the ancient star official system of China. Today's Draco is also the alpha star of Draco. This star is not very bright, but it is famous because it has always been the North Star.

In the Shang and Zhou Dynasties, Polaris was a star named Earth Star. Emperor star, also known as purple star, is located in the center of purple source in the ancient star official system. The North Pole means the first star in Polaris official, which is the beta star of Ursa minor today. So it is also located in Ursa minor. Many people in China know Ryuboshi today because the ancients always regarded it as the son of heaven-they saw all the stars revolving around it. Although this is not the case now.

During the Sui and Tang Dynasties, Polaris was a star named Lubao 32H, which was located in Lubao as its name implies. The star was so dark that ancient astronomers in China didn't notice it at all. Naturally, there is no name for it. It was also named after the influence of western missionaries in the Qing Dynasty, which shows how dark the stars of this constellation are. In modern times, when the western constellation system became universal in the world, China people directly called it by its western name. Until today, few people know this dark star that became the North Star in Sui and Tang Dynasties.

Then in the Yuan and Ming Dynasties. During this period, today's Polaris Gouchen entered people's sight for the first time and eventually became the Polaris. Around 2 100 years, the dog Chen Yi will be closest to the north celestial pole and then far away from it. At that time, a new star will replace it as the North Star.

You can ask if you don't understand, and hope to adopt it. Thank you.