China News Service, Guangzhou, June 13th (Guo Jun and Li Jianji) According to the Guangzhou Wuyang Planetarium, the first supermoon this year will appear on the evening of June 14th, and it will take place all over the country and even in Oceania, Asia, Europe, Africa and other regions. Can be seen in Antarctica.

　　This super moon, the eastern part of China (Shanghai) can witness the roundest full moon, and the western part of my country (Zada, Tibet) can witness the largest full moon in apparent diameter.

The supermoon will be the lowest full moon since 2009.

In Harbin, when the moon is mid-day (23:44 on the 14th), the maximum horizon height of the moon is only 17 degrees.

　　A supermoon means that the moon is located near the perigee month. At this time, not only the moon is the most round, but also the closest to the earth and the largest apparent diameter.

At 19:52 on June 14 (look), the moon, the earth and the sun line up approximately in a straight line, and the moon is the most round at this time.

At 7:23 on June 15, the moon was the closest to the earth, only 357,539 kilometers, and the apparent diameter was the largest, reaching 33.42 arc minutes.

　　The diameter of the moon is 3476 kilometers, which is a constant, that is, does not change in a short time.

But the moon revolves around the earth in an ellipse, with perigee and apogee, the difference between the two is more than 50,000 kilometers.

According to the principle of "near big, far small", on the earth, when the moon is observed at different times, its apparent diameter is different due to the changing distance between the earth and the moon.

Therefore, the "apparent diameter" of the moon is a variable.

According to astronomical observations, it is also a full moon, and its apparent diameter is 14% larger and its apparent area is 30% larger at perigee than at apogee.

　　In Guangzhou, at 19:14 on June 14, the round full moon is rising from the horizon in the south-southeast, and Guangzhou can see the fullest full moon; To the south, the altitude is the highest at 41 degrees, the lowest full moon in 13 years.

At 6:03, the round and large full moon slowly fell from the horizon in the south-west.

　　Experts say it's not a pity if you don't see the supermoon due to weather or other reasons.

In the early morning of July 14 this year, there are more exciting supermoons waiting for the public to watch.

(Finish)