The meaning of Ursa minor.

Which constellation does Polaris belong to?

Which constellation does Polaris belong to? Polaris is now very close to the north pole of the earth in the sky. Therefore, it always seems to be in the northern sky. It is because of its important position that it is famous. In fact, according to the brightness, it is just an ordinary second-class star, belonging to the "younger generation." It is more than 300 light years away from us. Polaris belongs to the brightest star in Ursa minor, also known as Alpha in Ursa minor. China called it "Gouchenyi" or "Beichen" in ancient times. On the constellation diagram, it is on the tip of the bear's tail.

Speaking of which, maybe you have to ask: Will Alpha Bear always enjoy the title of Polaris? Or, does the north pole of the earth's rotation axis always point to this star? First of all, it should be pointed out that the rotation axis of the earth is also slowly swinging periodically. Therefore, the position of the sky pointed by the north pole of the earth's rotation axis naturally changed. It can be seen that the "throne" of Polaris also has the possibility of taking turns to sit in the village. Astronomers have made it clear for a long time that 4800 years ago, Polaris was not the present alpha star of Ursa minor, but the alpha star of Draco called right pivot in ancient China. At that time, the right fulcrum won the honor of Polaris. By the year 1000, that is, the early years of the Northern Song Dynasty in China, the sky referred to by the North Pole of the Earth was 6 degrees away from the current Polaris, that is, the Alpha Star of the constellation Ursa minor. It can be seen that it was far from Polaris. At present, the north pole of the earth's rotation axis points to the sky, and the angular distance from Alpha Ursa minor is only about 1 degree. At present, the sky pointing to the north pole of the earth's rotation axis is approaching Ursa minor at the speed of 15 arc seconds per year. By AD 2 100, the angular distance between the sky indicated by the north pole of the earth's rotation axis and the alpha star Ursa minor was the smallest, only about 28 minutes. It seems that its "status" reached the peak of Polaris at this time. In the future, the sky pointing to the north pole of the earth's rotation axis will gradually move away from Ursa minor. By about 4000 AD, Cepheus Gamma will become the North Star. By 14000, Vega, the alpha star of Lyra, will gain the reputation of Polaris. At this time, people talked about the story of the Cowherd and the Weaver Girl. Vega's position as the throne of Polaris far exceeds that of Cowherd. The time for the earth's rotation axis to swing like this is about 26,000 years. This shows that everything is in motion, stillness is only temporary and relative, and the change of motion is eternal.

Which constellation is Polaris in? In the 40-minute night, there are two easily recognizable constellations in the northern sky, one is Ursa major and the other is Ursa minor.

The arrangement of Ursa minor is similar to that of the Big Dipper, but the brightness is not as good as that of the Big Dipper. The last barrel-handled star in the coastal constellation is called Polaris.

Which constellation does Polaris belong to? China called it "Gouchenyi" or "Beichen" in ancient times. On the constellation diagram, it is on the tip of the bear's tail.

Polaris belongs to the brightest star in Ursa minor, also known as Alpha in Ursa minor.

What constellation does the Big Dipper belong to? What constellation does Polaris belong to? The Big Dipper belongs to Ursa major, and Polaris belongs to the brightest star in Ursa minor, also known as Alpha minor.

China called it "Gouchenyi" or "Beichen" in ancient times. On the constellation diagram, it is on the tip of the bear's tail.

Draw a straight line from the two stars β and α at the mouth of Ursa major and extend to the other side five times away from them. There is a star that is not very bright. It is the alpha star of Ursa minor and the famous Polaris. Throughout the year, no matter where the handle of Beidou points, the connection between β and α always extends to Polaris. Therefore, these two stars were also called Polaris in ancient China. Connecting the main bright stars in the constellation is more like a little Beidou than a little bear. The Big Dipper in Ursa minor is not only much smaller than that in Ursa major, but also the other seven stars are smaller than 4 except that α and β are second-class stars and γ is third-class. Unlike the Big Dipper in Ursa Major, the other six stars are all second-class except δ. So this little Big Dipper is far less eye-catching than the Big Dipper. People usually notice only the North Star.

Which constellation is Polaris located in? Ursa major or Ursa minor? The whole northern sky is a dark star, and only Polaris and Big Dipper are brighter, so these two constellations are very easy to identify. Ursa major is brighter than Ursa minor, but Polaris on Ursa minor's tail is the only second-class star in the northern sky, and it is also the only star in the whole starry sky whose position is relatively constant and does not rotate. Polaris can be found at the five-fold line of Cassiopeia W opening. The Big Dipper in Ursa minor will revolve around Polaris. And Polaris is above the horizon all night (if you are in the mountains, you may not see it). After you find Polaris in Ursa major, you can always find Ursa minor, because Polaris is also the last star at the tail of Ursa minor. Conversely, you can easily find the constellation Ursa major.

Judgment: The main feature of Ursa Major is the Big Dipper, and the feature of Ursa Minor is the North Star. (√)

Polaris belongs to Ursa minor and is often used to tell directions.

Distinguish which constellation Polaris belongs to, 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. Today, many people in China know Ryuboshi, because the ancients always regarded it as the son of heaven ―― seeing 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.