Super Moon (File Photo) Photo by Li Jianji
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. All can be seen. The best observation time is from the evening of July 13th to the early morning of July 14th. This year's supermoon (full moon) is the lowest full moon in the northern hemisphere since 2008.
A supermoon refers to a full moon at "perigee". At 17:06 on July 13 this year, the moon moved to the closest "perigee" to the earth in the whole year, which was only 357,372 kilometers. At this time, the moon's apparent diameter was the largest; at 2:38 on the 14th (looking), the moon, the earth and The sun is aligned approximately in a straight line, and the moon is at its roundest at this time. The apparent diameter of the moon reaches 33.7 arcminutes, which is larger than the apparent diameter of the sun in the entire year.
observations show that for the same full moon, the apparent diameter of the full moon at "perigee" is 14% larger than at "apogee", and its apparent area is 30% larger.
Schematic diagram of the super moon drawn by Li Xuyan
In Guangzhou, at 19:06 on July 13, the moon will slowly rise from the horizon in the east-southeast; at 0:30 the next day, the moon will be at the zenith, located due south, with the highest altitude above the horizon. , reaching 41 degrees. At 2:38, the ecliptic longitude of the moon and the sun are 180 degrees different, and the moon is at its fullest at this time; at 5:56, the moon faintly sets from the horizon in the south of the west.
When the super moon rises in the east, the public will feel that the full moon is particularly large and golden in color. At this time, you can use your mobile phone or digital camera to take photos with the super moon, usually with the help of a flash.
htmlThe super moon on July 14 was the lowest full moon in the past 14 years when the moon was at its zenith. The zenith of the moon and its horizon height in various places: Harbin at 23:35 on July 13, 18 degrees; Beijing at 0:17 on July 14, at 24 degrees; Shanghai at 23:56 on July 13, at 33 degrees; Guangzhou At 0:30 on July 14, the temperature was 41 degrees; in Shenzhen, at 0:27 on July 14, the temperature was 42 degrees; in Haikou, at 0:43 on July 14, the temperature was 44 degrees.Under normal circumstances, a super moon will occur once every 14 synodic months (about 413.4 days). The next super moon will occur on August 31 next year. At that time, the moon will pass the "perigee", which is only 357,181 kilometers away, and can be seen all over China. Next year's supermoon will have a larger apparent diameter than this year's supermoon. (End)
