The night sky will usher in the release of many "seasonal videos" this week. The most noteworthy is the Orion meteor shower that will reach a huge scale on October 21. In addition, there is also the Xuanyuan 14th month in Leo. The night sky in October will usher in the visit of t

The night sky this week

will usher in the release of many "sky-eye videos"

The most noteworthy is that on October 21,

, it reaches a huge Orion meteor shower

, and in addition, , the second chrono moon, , appeared in

, 11, 20th , Leo,

, 11, 20th , 11, 21st , 11th

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, 11th , 11th , 11th , 11th , 11th

, 11th , 11th , 11th , 11th , 11th , 11th

, 11th , 11th , 11th , 11th , 11th , 11th , 11th

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, 11th , 11th , 11th , The night sky of the 14th month of the 11th month

will usher in the visit of the Orion meteor shower

from October 21st to 22nd

is the huge date of the meteor shower

Beijing Planetarium experts introduced that among the many meteor showers of large and small in the year, the Orion meteor shower is not big or small in terms of traffic, and is considered a meteor shower with medium traffic. The Orion meteor shower has a very fast meteor, which can reach 66 kilometers per second, which is easier to distinguish.

The active period of Orion meteor shower is very long, starting from October 2 and continuing until early November every year. Meteors belonging to this meteor group may appear in more than a month. Around to October 21, the flow of the Orion meteor shower reached a huge amount, and the maximum zenith flow is expected to be above 20 per hour. The radiation point of the meteor shower is located between Orion and Gemini . It only rises from the eastern horizon after 10 o'clock in the evening, and gradually rises in the second half of the night. It is located directly south before dawn, with the highest horizon. Therefore, the Orion meteor shower is suitable for observation in the middle of the night.

observations are not necessarily limited to the day of October 21

A few days before and after

The weather is sunny and can be observed

1 October 21 is the 26th day of the ninth lunar month. The moon is in Leo, which is a waning moon. The moonlight is darker and has little interference to the observation of meteor showers.

Beijing astronomical photography enthusiast Lu Shupei photographed Orion meteor shower in Inner Mongolia Autonomous Region on October 22, 2017

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Source Beijing Daily Beijing Planetarium FM93 Voice of Transportation

Edit Pan Xiaohong

Review Tao Houfu

Supervisory Producer Shao Jianwei

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