Which constellation does Polaris belong to? Polaris is now very close to the sky pointing towards the Earth's North Pole. Therefore, it always appears to be in the northern sky. It is famous because of its important location. In fact, according to its brightness, it is just an ordinary second-magnitude star, belonging to the "junior generation". It is more than 300 light years away from us. Polaris is the brightest star in the constellation Ursa Minor, also called Alpha Ursa Minor. In ancient China, it was called "Gou Chen Yi" or "Beichen". Graphically, it is at the tip of the Little Bear's tail.
Having said this, you may want to ask: Will Alpha Ursa Minor always enjoy the honorific title of Polaris? In other words, 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 earth's axis of rotation is also slowly swinging periodically. Therefore, the position in the sky where the North Pole of the Earth's rotation axis points naturally changes. It can be seen that the "throne" of Polaris also has the possibility of taking turns. Astronomers have long calculated that 4,800 years ago, the North Star was not Alpha Ursa Minor, but Alpha Draconis, which was called Youshu in ancient China. At that time, Youshu received the honor of Polar Star. By 1000 AD, which was the early years of the Northern Song Dynasty in China, the sky where the Earth's North Pole pointed was still 6 degrees away from the current North Star, Alpha Ursa Minor. It can be seen that at that time it was far from being the North Star. The North Pole of the Earth's rotation axis now points to the sky only about 1 degree from Alpha Ursa Minor. The sky currently pointed toward the North Pole of the Earth's rotation axis is approaching Alpha Ursa Minor at a rate of 15 arc seconds per year. By around 2100 AD, the angular distance between the sky pointing toward the North Pole of the Earth's rotation axis and Alpha Ursa Minor was the smallest, only about 28 arc minutes. It seems that its "status" has reached the peak of the North Star at this time. In the future, the sky pointing toward the North Pole of the Earth's rotation axis will gradually move away from Alpha Ursa Minor. By around AD 4000, Gamma Cephei will become the North Star. By around 14,000 AD, the star Alpha Lyra and Vega will gain the reputation of the North Star. At that time, people talked about the story of Cowherd and Weaver Girl again. Vega's status as "throne of the North Star" far surpassed that of Altair. It takes about 26,000 years for the Earth's axis to swing in this way. This shows that everything is in motion, rest is only temporary and relative, and movement and change are eternal.
In which constellation is Polaris located? 40 minutes At night, there are two easily identifiable constellations in the northern sky, one is Ursa Major and the other is Ursa Minor.
The arrangement of the Ursa Minor constellation is similar to that of the Big Dipper, but its brightness is not as bright as the Big Dipper. The last star on the handle of the Ursa constellation is called Polaris
Which constellation does Polaris belong to? In ancient China, it was called "Gou Chen Yi" or "Beichen". Graphically, it is at the tip of the Little Bear's tail.
Polaris is the brightest star in the constellation Ursa Minor, also called Alpha Ursa Minor.
What constellation does the Big Dipper belong to? What constellation does Polaris belong to? The Big Dipper belongs to the constellation Ursa Major. Polaris belongs to the brightest star in the constellation Ursa Minor, also called Alpha Ursa Minor.
In ancient China, it was called "Gou Chen Yi" or "Beichen". Graphically, it is at the tip of the Little Bear's tail.
Draw a straight line from the two stars β and α at the mouth of the Big Dipper in Ursa Major, and extend it to each other five times farther away from them. There is a star that is not very bright. This is α in Ursa Minor, also known as Ursa Minor. It is the famous North Star. Throughout the year, no matter where the handle of the Beidou spoon points, the line connecting the two stars β and α always stretches towards the North Star. Therefore, in ancient my country, these two stars were also called Zhiji stars. By connecting the main bright stars in the constellation, it looks more like a Little Big Dipper than a little bear. The "Big Dipper" in Ursa Minor is not only much smaller than the Big Dipper in Ursa Major, but among the seven stars, except for α and β, which are 2nd magnitude stars, and γ, which is 3rd magnitude star, the others are smaller than 4th magnitude. Unlike the Big Dipper in Ursa Major, Except for δ, which is a 3rd magnitude star, the other six are all 2nd magnitude stars. Therefore, this Little Big Dipper is far less eye-catching than the Big Dipper. People usually only notice the North Star.
In which constellation is Polaris located? Ursa Major or Ursa Minor? The entire northern sky is full of relatively dark stars, with only Polaris and the Big Dipper being brighter, so these two constellations are very easy to identify. Compared with Ursa Major and Ursa Minor, the overall constellation is brighter, but the Polaris on the tail of the Little Bear is the only one in the northern sky. It is a 2nd magnitude star, and it is also the only star in the entire starry sky that has a relatively constant position and does not rotate. Polaris can be found at the 5-fold line connecting the opening of W in Cassiopeia. The Big Dipper of the Big Bear will rotate around Polaris, and Polaris It is above the horizon all night long (it may not be visible if you are in a mountainous area). After finding the Polar Star from Ursa Major, you can always find Ursa Minor, because Polar Star is also the last star at the tail of Ursa Minor. From Ursa Minor, you can easily find Ursa Major.
Judgment: The main feature of Ursa Major is the Big Dipper, and the main feature of Ursa Minor is the North Star. (√)
Which constellation does the Polar Star that is often used to identify the direction belong to, Ursa Minor
Which constellation does the Polar Star that identifies the direction belong to have been different from ancient times to the present, because from ancient times to the present? The North Star is always changing.
Today's North Star is located in Ursa Minor in today's Western constellation system. It is known as Alpha Ursa Minor in the West, which means the brightest star in this constellation; it is located in Gouchen Xingguan in the ancient Chinese star system, in Chinese The official name is Gouchenyi, which means the first star among Gouchenxingguan.
In the primitive society period of 3000 BC, the North Star at that time was a star called Youshu, located in the Ziwei Youyuan Xingguan or Youyuan in the ancient Chinese star official system; it is located in today's The constellation Draco is also the star Alpha Draconis. This star is not very bright, but it is very famous because it once served as the North Star.
During the Shang and Zhou dynasties, the North Star at that time was a star named Emperor Star. Emperor Star, also known as Ziwei Star, is located in the center of Ziweiyuan in the ancient star system. North Pole means the first star in Polaris, today's Beta Ursa Minor. So it is also located in Ursa Minor. Today, many Chinese people know about the Emperor Star. The reason is because the ancients always regarded it as the Son of Heaven in the sky - all the stars are seen rotating around it. Although this is no longer the case.
During the Sui and Tang Dynasties, Polaris was a star called 32H Camelopardalis, which as the name suggests is located in the constellation Camelopardalis. This star was so dim that ancient Chinese astronomers did not notice it at all, so they naturally did not give it a name. The brightest star in Camelopardalis was also named after the influence of Western missionaries during the Qing Dynasty. You can see how dim the stars in this constellation are. In modern times, after the Western constellation system became common to the world, the Chinese directly called it by its Western name. To this day, few people know about this dark star that became the North Star during the Sui and Tang Dynasties.
Then came the Yuan and Ming Dynasties. During this period, today's North Star Gouchen first came into people's sight and eventually became the North Star. Gouchen will be closest to the North Celestial Pole around 2100, and will then move away from it. At that time, a new star will replace it as the North Star.
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