What are the stars in North Rush Gate?

Bayer: αPsA

Constellation name: South Fish.

Right ascension: 22 hours 57 minutes 38 seconds

Declination:-29 37'

Brightness: 1.2 magnitude

Distance: 25.0 light years

Date: フォーマルハ

Beiluoshimen is the main star of Pisces (alpha star of Pisces), bright star 18, apparent magnitude 1. 16, absolute magnitude 2.03, etc. The distance is 22 light years. Beiluoshimen gives people a moist feeling and is a 3V-shaped white main sequence star.

The north gate of Chang 'an is called the north gate, which means the military gate, and the north gate means staying in the north. Another way of saying it is that the north gate of ancient Chang 'an is called the north gate, and the north gate refers to the north gate. Ancient Arabia was called Beiluoshimen Fomalhaut, which means "fish mouth".

In the autumn sky, Beiluoshimen is a lonely star, and there is no brighter star around. It is the southernmost bright star that can be seen in most parts of China (old star in Lingnan area).

In the southern sky in autumn night, except for North Rushmen, Tusikong is the brightest. In the vast area of Guangxi, you can also see the Star Water Commission I, which is brighter than Beiliu Shimen.

In ancient Persia, Shimen in Beiluo, Bisuwu, Antares and Xuanyuan XIV were called the four heavenly kings, mainly because they were close to the ecliptic and almost evenly distributed on the ecliptic.

The diameter of Beiluoshimen is about 1.7 times the diameter of the sun, the mass is about 2.3 times, and the brightness is 15 times. It is only about 200 million years old and is a very young star.

A circle of disk-shaped dust clouds surrounds Beiluoshimen, extending from 5 astronomical units to 90 astronomical units away from the star. 1998, through observation and speculation, people think that planets are likely to be produced in dust clouds.

Records in the history of astronomy in China

"Jin Shu Tian Wenzhi": "A star falls in the north and is in the southwest of Yulin. Those in the north will stay in the north; Falling, the sky is falling; Teacher, male also; As a teacher, you are also a military school. The north gate of Chang 'an is called the North Gate. It is like this. "

Stay in the north: located in Gong Bei; Autumn: Chai Men, Luobamen.

Historical Records Tianguanshu: "There is a big star next to it, which falls in the north". Miao Meng was quoted in Kaiyuan Zhan Jing as saying, "There is a big red star in the southwest of Yulin, which looks like a big horn. The gate of the heavenly army is also called Beiluo, a master."

"Justice in Historical Records": One star falls to the north, the feather forest is southwest, the gate of the heavenly army, and the gate falls to the north of Chang 'an, and that's it.

It can be seen that this star was originally called Beiluo, or Master (because it is close to the door), and Li and Zhang Shoujie took the North Gate of Chang 'an as an example. The combination of "Northern Expedition+Master" originated from the usage in Sui and Tang Dynasties.

Phoenix song "the sea"

Beiluo Shimen is a cat in the sea. It is an underground god beast, and its eyes can be pupil operated. It first came to Japan with the protagonist Lu, and then moved to China. The original owner was Xianbi, and finally it was handed over to Yao Qing, the head of the underground department. It has a characteristic, that is, it likes to follow the hostess and doesn't like men.