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Orion directory [hidden]

Introduction to Orion

Orion nebula

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Orion meteor shower

Real photos of Orion

[Edit this paragraph] Introduction to Orion

One of the zodiac signs. Located between Gemini, Unicorn, Canis Canis, Taurus Rabbit, Bojiang and Canis Canis, its northern part is immersed in the Milky Way. The main body of the constellation consists of four bright stars, Betelgeuse and Betelgeuse, forming a quadrilateral. In the center of the quadrangle, there are three bright stars in a straight line, which should be a belt tied around the hunter's waist. In addition, under these three stars, there are three little stars, which are swords hanging on the belt. The whole image is like a brave hunter, with his head held high, which is very spectacular and has been noticed by people since ancient times.

Orion Orion map is at the hunter's sword, and a blue-and-white hazy nebula can be seen by the naked eye. This is the famous Orion nebula. At the left end of the hunter belt, there is a dark nebula shaped like a horse's head, which is the famous horse's head nebula (invisible to the naked eye). Besides these famous nebulae, Orion has many gas nebulae.

The four stars α, γ, β and κ in Orion form a quadrilateral, and in its center, the three stars δ, ε and ζ are arranged in a straight line. These are the seven brightest stars in Orion, among which α and β are first-class stars and the rest are second-class. There are so many bright stars in a constellation, and the arrangement is so regular and magnificent. No wonder, all over the world, it is a symbol of strength, tenacity and success, and people always compare it to gods, warriors, superman and heroes.

Among the 28 hotels in Sanyuan, China, Orion is equivalent to Betelgeuse, Jing Daole, Shenqi and Shuifu.

The brightest star in Orion is beta star, with an apparent magnitude of 0. 12, ranking seventh among all bright stars in the whole day, with an absolute magnitude of -7. 1 and a surface temperature of 12000. Alpha Orion, the ninth brightest star in the whole day, Latin for Betelgeuse, with a brightness of 0.06-0.75 and a period of 5.5 years, is an irregular variable star. Every year 1 the end of February, at 8: 00 pm, the three stars of Orion are high in the southern sky, so there is a folk saying that "the three stars are shining high and the New Year is coming".

The best observation date of Orion is1from early February to early April. It rises from the southeast when it appears, and falls from the southwest after crossing the zenith. Orion α and β are extremely bright and easy to see in a cloudless night sky. However, because there are many bright stars in the winter night sky, other stars are needed to identify Orion. Usually, three stripes arranged in a straight line are used as its identification index. The brightness of these three stars is between 1.7-2.3, so they can be easily seen clearly in the sky with little light damage. α and β are located at the north and south ends with a vertical line in the middle. After finding out, find G and κ in the west of α and east of β, and the whole Orion outline will be vividly displayed!

The following is the position of Orion observed at 2 1 at 30 degrees north latitude at different times.

Orion is the most recognizable constellation in the winter night sky, with the elevation of date and time.

65438+February 1 Day 2 1:00 20-45 Southeast.

65438+1 October1,2 1: 00, 45-70, and the zenith is in the southeast.

February 1 2 1:00 60-90 Tiandingnan

March 1 2 1:00 40-65 southwest and west

April 1 20:00 30-55 southwest west

[Edit this paragraph] Orion Nebula

The Great Orion Nebula (M42) is located in Orion, a hunter named after the ancient Greek hunting myth. M42 is located on his sword. On a dark and clear night, you can see M42 with the naked eye without the help of any telescope. It looks like a fuzzy celestial body. M42 is about 1500 light-years away, and it is located on the Orion arm, one of the spiral arms of the Milky Way. Our solar system is also part of the Orion arm, which revolves around the core of the Milky Way galaxy. The viewing area of M42 is about 5% of the moonlight area during the full moon.

Orion nebula is a very famous nebula. Since ancient times, people have been watching this vague area. Only with the birth of astronomical telescope and the progress of astronomy today, people began to know more about this cosmic object.

The four bright stars in the center of the image are called Orion quadrilateral poly stars, which are the hottest and most massive stars in the whole nebula. The light of these four stars illuminates the nebula, just like a flash lamp illuminates a cave, and the nebula shines through it, so it is called the emission nebula.

[Edit this paragraph] Horsehead Nebula

Orion's Horsehead Nebula is one of the most recognizable nebulae in the night sky, and it is part of a large dark molecular cloud. This unusual object was found at the bottom of a photo taken at the end of 18. The red light of the nebula is mainly hydrogen irradiated by the stars behind the nebula. The dark horse's head mainly comes from the dense dust blocking the light behind it, but the shadow on the left of the bottom of the horse's neck is caused by the horse's neck. The strong magnetic field running through the nebula is forcing a lot of gas to fly away from the nebula. The bright spot at the bottom of the Horsehead Nebula is a young star in infancy. It takes about 1500 years for light to reach us from the Horsehead Nebula.

[Edit this paragraph] Orion meteor shower

Orion also has a meteor shower, which is located at the point where the connecting line between ζ star and α star doubles northward. Its appearance date is1October 25th 10 to 17 to 10 every year, and its peak period is 10 to 2 1. In addition, the sub-peak period from 10 to 18 is also worthy of attention. It was also caused by Halley's comet.

In Greek mythology, Poseidon had a son named Aolaiwen. Oliver was born as tall and strong as his father. But he doesn't like living in the sea. Instead, he often comes to Shan Ye to climb mountains and hunt. However, he is Poseidon's son, so he can walk like a fly even at sea.

Accompanied by him all day is a hound named Sirius, who is as brave as his master. He always rushes to the front when hunting and always stands in front of Aolaiwen when he meets wild animals.

After a long time, Aolaiwen often met the moon god and hunting goddess themis when hunting. The two were quickly attracted by each other's elegance and superb hunting skills. Later, they often walked in the mountains together, climbed cliffs and climbed dangerous peaks, and talked about everything.

All this made Apollo, the sun god, very angry. He was afraid that his sister Al themis would be like herself and Daphne. He knew Artemis was a stubborn girl, and persuasion would not impress her at all. Apollo was cruel and came up with a deadly trap.

One day, Al themis and Aolaiwen went to the seaside to play. Aolaiwen proposed to Al themis, but Al themis agreed. But Apollo asked themis to shoot the scorpion with an arrow, while Aolaiwen struggled in the water. Apollo asked Al themis not to film it in Aolaiwen, so they got married. If it was shot at Aolaiwen, Al themis was very confident and really shot at the scorpion, but Aolaiwen was poisoned by the scorpion venom.

This tragedy made Zeus cry. He collected Aolaiwen's body, lifted him to the sky and turned him into Orion. We can't be together all the time before we die, and finally we will be together forever with Artemis, the goddess of the moon. Sirius also won the sympathy of Zeus with his loyalty, ascended to heaven and continued to accompany his master. This is a dog. In order not to make Sirius lonely, Zeus also specially found a partner for him-a puppy. Zeus knew that Aolaiwen liked hunting best before his death, so he put a small prey beside him-the sky map.