August this year 1 Can you see Antares in Shanghai?

Antares, the alpha star of Scorpio (the main star of Scorpio), also known as fire in ancient China, belongs to the seven-night antares in the Eastern Black Dragon (Antares has three stars, namely Scorpio σ, α, τ, also known as Samsung), and is used to determine the seasons. "Fire in July" means that Mars is heading west and the weather is cold. Antares is the15th bright star in the whole day, which is a visual binary star. The magnitude of the main star is 1.2, and the red giant with M 1I is 6000 times the brightness of the sun. The companion star is a blue dwarf star with brightness of 5.4 and angular distance of 3 ". The synthetic magnitude is 0.96 and the absolute magnitude is -4.7. 600 light years away. Modern astronomy is called "Scorpius alpha star [1]". This is a red Supergiant star. It is a semi-regular variable star with obvious light variation and forms a visual binary system with a blue main sequence star. Antares or radio sources.

The main star of Antares is actually a semi-regular variable star, with a brightness of 0.9 to 1.8 and a dimming period of 48 years. The surface temperature is 3600K, the radius is 700 times that of the sun, the surface area is 360000 times that of the sun, and the mass is 15.5 times that of the sun.

AntAres, the English name of AntAres, is a combination of Anti and ares. Ares is the name of God of War and Mars in Greek mythology, which means "the enemy of Mars". Because the brightness and color of Antares are very similar to those of Mars, and the orbits of both stars are on the ecliptic, when Mars runs to Scorpio, two red stars shine in the sky, so Antares is named. In ancient Persia, Antares, Bi Suwu, Xuanyuan XIV and Beiluoshimen were collectively called the four heavenly kings.

The position of antares in Scorpio

[Edit this paragraph] Observe

"Fire in July" means that Mars is heading west and the weather is cold. Modern astronomy is called "Alpha Star of Scorpio". This is a red Supergiant star. Antares and another blue dwarf star with a visual magnitude of about 5 and MK classification of about B4V form a visual binary star with an orbital period of thousands of years. The blue companion star of Antares is a radio star, which was discovered in 1970s. The radio of blue companion antares and the radio of red Supergiant star antares and their brightness are all measured by very large antenna arrays. It is also found that the radio source near the blue companion star is actually located between the two satellites, which may be formed by the wind interaction between the two stars.

Legend has it that when China was in Zhuan Xu more than 4,000 years ago, he set up an official post of Huozheng, who was responsible for observing this star.

Red, magnitude 0.92, distance about 600 light years. Its radius is 700 times that of the sun, reaching 4170,000 km. The surface temperature is 3000 degrees, the volume is more than 200 million times that of the sun, and the mass is 15.5 times that of the sun. So the density is only 8.6 million times that of the sun.

Location: Right ascension 16: 26.3, declination -26 degrees 19.

[Edit this paragraph] July filariasis

"July Fire" comes from the Book of Songs, national style and folk customs. July filariasis, September clothes.

The so-called "filariasis" is explained on page 952 of the concentrated edition of Ci Hai: "Fire, the name of the star, is the heart. Every year in the summer calendar, the heart stays in the sky at dusk in May, and it gradually goes west after June. The heat in summer began to decline. " In addition, Confucius said: "Those who travel westward in July are also the stars of fire, and they know that the cold is getting colder." It can be seen that "July fire" is related to solar terms and climate, but it is by no means a word to describe the heat. Therefore, Yu Guanying's selected translation of The Book of Songs is more concise: "After dusk in autumn, the great Mars sets in the west, which is called' filariasis'".

"July" refers to July in the summer calendar; "Flow" refers to moving and falling; "Fire" refers to the star name "Big Mars" (not Mars orbiting the sun), that is, the heart.

"Big Mars" is a famous red giant star, which can emit lux light. It is located in the south, and it is the highest in the evening of May every year in the summer calendar. On the evening of July in the summer calendar, the position of Mars gradually descended from the sky to the west. "Go to Qiu Lai in the summer." People call this phenomenon "July filariasis".

Therefore, the real meaning of "July fire" means that in July of the summer calendar, the weather gradually turns cold, and at dusk, you can see big Mars falling from the west.

It is said that 3,000 years ago, under the rule of Zhou Chengwang, there was a kingdom of tapirs (B and N) in today's Bin County, Shaanxi Province. Long ago, Zhou was the birthplace of Zhou agricultural culture. At that time, the calendar was not perfect, and the guidance of farming activities depended entirely on stargazing. Every year at the end of summer, a red star named fire appears in the southern sky, Alpha Scorpio, with a scorpion heart. With ancestral observation experience, farmers know that summer is over, autumn is coming, and the busiest autumn harvest season of the year is here.

In a flash, it was a few days. At the same time in autumn and evening, the farmer looked at the southern sky again and found that the fire had moved westward and fell down compared with a few days ago. A few days later, it moved westward and fell even more. A month later, at the same time, looking at the southern sky, the fire has moved to the western horizon, too low, trapped in the clouds, covered in the mountains, out of sight. Dear readers, this process is called "July filariasis". There is only one solution, not two. The water is flowing downwards. The fire is moving to the west and falling. Fire has a unique connotation and special significance here. Refers to the alpha star of Scorpio, which is called Antares in ancient astronomy in China. It is by no means a "scorching sun" fire. When you read the text, you will make jokes.

"Fire is in July, clothing is in September" is the first two sentences of Qi Feng in July. The first sentence is an introduction, and the weather is getting cold. It's time to sew cold clothes What's more, we use the lunar calendar 3,000 years ago, and we know that it was July, which is August this year. If you want to observe today, you have to wait until September in the solar calendar.

[Edit this paragraph] Introduction of Xinsu

Heart lodge, one of the 28 lodgings, five of the seven lodgings in the East. The heart is a fire, a star to wait for in the first month of summer. Often used with residential accommodation to discuss "the central government controls all directions" The dragon's waist where the kidney is located is the source of metabolism, so it can't be taken lightly, so it is more fierce.

If you are worried about evil stars, you will get hurt when you start making men and women. You can't use this day to rob a tomb, and you will see a plague within three years.

The heart is the heart of a dragon. Antares, the famous antares (Scorpio Alpha), was called fire in ancient times. It is a red giant star, and it is a first-class star. Antares also belongs to Scorpio. Antares consists of three stars.

AntAres is AntAres, which is a combination of Anti and ares. Ares is the name of God of War and Mars in Greek mythology, which means "the enemy of Mars". Alpha star in Scorpio, also known as fire in ancient China, belongs to the heart of the seven nights of the Eastern Black Dragon and is used to determine the seasons. The15th bright star in the whole day is a visual binary star with apparent magnitude 1.2, etc. The red giant star of M 1I is 6000 times brighter than the sun, and the companion star is a blue dwarf star with brightness of 5.4. The angular distance between the two stars is 3 ". The synthetic magnitude is 0.96 and the absolute magnitude is -4.7. 440 light years away.

Because the brightness and color of Antares are very similar to those of Mars, and the orbits of both stars are on the ecliptic, when Mars runs to Scorpio, two red stars shine in the sky, so Antares is named. In ancient Persia, Antares, Bi Suwu, Xuanyuan XIV and Beiluoshimen were collectively called the four heavenly kings. The main star of Antares is actually a semi-regular variable star, with a brightness of 0.9 to 1.8 and a dimming period of 48 years. The surface temperature is 3600K, the radius is 600 times that of the sun, the surface area is 360 thousand times that of the sun, but the mass is only 25 times that of the sun. Flames in July mean that Mars is heading west and the weather will be very cold. Modern astronomy is called "Alpha Star of Scorpio". This is a red Supergiant star. Antares and another blue dwarf star with a visual magnitude of about 5 and MK classification of about B4V form a visual binary star with an orbital period of thousands of years. The blue companion star of Antares is a radio star, which was discovered in 1970s. The radio of blue companion antares and the radio of red Supergiant star antares and their brightness are all measured by very large antenna arrays. It is also found that the radio source near the blue companion star is actually located between the two satellites, which may be formed by the wind interaction between the two stars. Legend has it that when China was in Zhuan Xu more than 4,000 years ago, he set up an official post of Huozheng, who was responsible for observing this star. Mars and antares (Scorpio α) are the two reddest celestial bodies in the whole day. Mars is as bright as fire and is called "sparkling" in the west. Antares are as red as fire, also known as "fire". If two fires meet, the two stars will be bright and red. Staring is an ominous sign, and wandering in the heart (so it is called "staying") is a very unlucky phenomenon in the eyes of ancient people. They think that either the prime minister will be dismissed or the emperor will die, so people have attached great importance to it since ancient times, calling it Mars staying in antares. "

Mars approaches the earth once every two years and two months. Because the orbit of Mars is flatter (more elliptical) than that of the Earth, it only approaches once every 15 to 17 years. The biggest approach in the past century will take place in 2003. This approach belongs to the middle approach, which occurred on June 22, with an apparent diameter of 20.8 seconds.

In ancient China, the phenomenon of Mars in Antares was regarded as a sign of catastrophe. Because Antares symbolizes the emperor, if Mars stops near Antares or goes retrograde, it will be regarded as an infringement on the emperor. Astrology refers to "the adult changes politics and the master enters the palace", and the emperor may be in danger of death.

[Edit this paragraph] Observation data

Era J2000

Scorpius

Guan xing Xin su

Right ascension 16 hours, 29 minutes and 24.5 seconds

Declination-26 25' 55.2 "

Apparent magnitude (V) 0.9 ~ 1.8

characteristic

Spectral classification m1.5iab-b/b2.5v.

B-V color index 1.86

U-B color index 1.34

Variable star LC type irregularity

Astrometry

Radial velocity (Rv)? 3.4 km/s

Self (μ) RA:？ 10. 16 MAS/ year

December: 23.2 1 quality/year

Parallax (π)5.40 1.68 mas

The distance is about 0.600 Li.

(about. 190 computers)

Absolute magnitude (MV)? 5.29

give exact information

Mass15.5m ⅷ

The radius is 700 R⊙ⅷ.

Brightness 65000 L⊙ VIII

Temperature 3500 K