Does Polaris point to the north?

Yan Zi Shi, the founder of Polaris, is also known as Zi Gong and Zi 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. 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.

Polaris refers to the star closest to the north celestial pole, so Polaris is not static. At present, it refers to Alpha Star in Ursa minor (official name of China: Dog Chen Yi). About 434 light years away from the earth, it is a star with stable brightness and position that can be seen in the night sky. Ancient astronomers admired Polaris very much, thinking that it was fixed, all the stars revolved around it, and it was the symbol of the emperor (note that the star they worshipped was not today's Polaris Gouchenyi, but the circumjacent Polaris Arctic II, also called Ziweixing or Emperor Star). Because Polaris is closest to true north, people on earth have been navigating by its starlight for thousands of years. Some sailors get lost. They will find the North Star to locate it. Polaris is always in the north. Even without a compass, they can tell the direction.

You can also look for today's North Star Gouchenyi through the Big Dipper, and two stars at the mouth of the Big Dipper, Shu Tian and Tian Xuan, extend five times in the direction of Shu Tian to find a bright star-Gouchenyi. Near it is the north celestial pole.

It should be noted that Polaris can't be confused with a specific star name, especially when it comes to Polaris, it will be confused with Ziweixing (also known as Emperor Star, the Polaris with a two-week calendar), because Polaris in different dynasties is different, so Polaris doesn't represent Ziweixing. Polaris is just a title. All the stars near the yellow pole have a chance to become Polaris. If you want to know more about today's Polaris, you'd better refer to the entry "Gouchenyi".

Location:

Now Polaris is a bright star named Dog, and its western name is Dog Eye. This star is located at the tip of the bear's tail in Ursa minor. In English, Cynosure also means center of attraction, which means that the stars revolve around the hook. It should be noted that today's Polaris Gouchenyi has nothing to do with the purple star and purple wall in ancient China. I hereby make a special correction.

Polaris is a bright star in the northern part of the sky, close to the north celestial pole and almost opposite the earth axis. Seen from the northern hemisphere of the earth, its position is almost unchanged, so it can be used to identify the direction. However, due to precession, Polaris is not a star whose position will never change, and it will be Vega by the year 14000. Every 25,800 years, Polaris will cycle. For example, during Magellan's voyage, Gouchen I was about 8 degrees from the North Pole, but today, Gouchen I is closer to the North Pole, with an angle difference of only 40'. According to the calculation of earth axis swing and stellar gravity, by 2 100, Gouchen-1 will reach the nearest position directly above the North Pole, only 28' away from the North Pole. So, I gradually hooked up.

Polaris is the brightest star in Ursa minor at present, that is, Alpha in Ursa minor. It is a yellow giant with a spectral type of F, about 434 light years away from the Earth, and its mass is about four times that of the sun. It is the brightest star closest to the earth and is at the tip of the bear's tail in the constellation diagram. Gou Chenyi is also a star of underworld nature.

Connect a straight line between Tian Xuan and Shu Tian at the front end of the Big Dipper, and then extend the distance five times to Shu Tian. You will meet a bright second-class star, which is Gou Chenyi. This is the easiest way to find Gou Chenyi.

Polaris (Gouchenyi) is also a three-in-one system. The distant companion star (Polaris B) can be clearly observed with a small telescope, while the nearby companion star (Polaris) is too close to Polaris (the apparent distance is only 0.2 ",the actual distance is 18.5) and too dark to see. It was not until early August 2005 that Hubble captured its image. Polaris is 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. Because of the special name Polaris, many people think that Gouchenyi is very bright, but in fact, under the ordinary weather in the city at night, the brightness of Gouchenyi has basically reached the resolution limit of the human eye, which is why many people read popular science books when they were young and knew about Polaris, but they could not find it in the northern sky. Unless the weather is fine at night, it is difficult to find Gou Chenyi directly.