China News Service, Guangzhou, July 10 (Guo Jun and Li Jianji) According to the Guangzhou Wuyang Planetarium, in the early morning of July 14 this year, the largest super moon of the year will appear, which can be seen all over China.

The best observation time is from the evening of July 13 to the early morning of July 14.

This year's supermoon (full moon) is the lowest full moon in the northern hemisphere since 2008.

　　A supermoon is a full moon at "perigee".

At 17:06 on July 13 this year, the moon moved to the "perigee" closest to the earth throughout the year, only 357,372 kilometers. At this time, the apparent diameter of the moon was the largest; at 2:38 on the 14th (look), the moon, the earth and the The sun is arranged in an approximately straight line. At this time, the moon is the most round, and the apparent diameter of the moon reaches 33.7 arc minutes, which is larger than the apparent diameter of the sun in the whole year.

　　Observations show that the same full moon, the full moon is 14% larger in apparent diameter and 30% larger in apparent area at "perigee" than at "apogee".

Super moon sketch drawn by Li Xuyan

　　In Guangzhou, at 19:06 on July 13, the moon will slowly rise from the horizon in the south-east; at 0:30 the next day, the moon will be in the middle of the sky, located in the south direction, and the altitude will be the highest, reaching 41 degrees.

At 2:38, the ecliptic longitude of the moon and the sun is 180 degrees apart, and the moon is at its fullest;

　　When the supermoon rises in the east, the public will feel that the full moon is particularly large and golden.

At this point, a mobile phone or digital camera can be used to take a photo with the Super Moon, usually with the aid of a flash.

　　The July 14 supermoon was the lowest full moon on the horizon in 14 years at mid-heaven.

The mid-heaven on the moon and its altitude in various places: Harbin, July 13, 23:35, 18 degrees; Beijing, July 14, 0:17, 24 degrees; Shanghai, July 13, 23:56, 33 degrees; Guangzhou July 14, 0:30, 41 degrees; Shenzhen, July 14, 0:27, 42 degrees; Haikou, July 14, 0:43, 44 degrees.

　　Under normal circumstances, a supermoon occurs once every 14 lunar months (about 413.4 days).

The next supermoon will be on August 31 next year.

At that time, the moon will pass "perigee", only 357,181 kilometers, and it can be seen all over China.

Next year's supermoon will have a larger apparent diameter than this year's.

(Finish)