How often does the super moon appear? When will it appear next time?

The astronomical phenomena of the super moon are not difficult to meet. It will appear four or six times a year, and every time it appears, it will attract everyone's attention. At that time, the moon will be big and round. So we use constellation knowledge to reveal how often the super moon will appear. When will it appear next time? The appearance of the super moon is not uncommon. It may appear almost every year, with an average of 4-6 super moons. Because the earth and the moon run according to a certain cycle, they will get closer and closer at a certain time, and if this time happens to be the most round period of the moon in a year, then there will be a super moon. In addition, the moon's orbit is elliptical, of course, some points are closer to the earth, and the closer the full moon appears, the real super moon is. When will the next super moon appear? The next super moon will be on April 8, 2020, the last super moon in 2020 will be on May 7, and the last one will be on February 9, 2020. The super moon has two key points, one is the nearest and the other is the most round. Yongchun Zheng, an associate researcher at the National Astronomical Observatory of Chinese Academy of Sciences, said that if the full moon happens to be at perigee or near perigee, the moon we see on the earth will be 12- 14% larger than that at apogee, and we will enjoy a bigger and brighter moon than usual. Many people will call it a super moon. The closest point on the moon's orbit to the earth is called perigee, and vice versa. Every time the moon rotates around the earth, it will pass through perigee and apogee once, once every 27.5546 days on average. The time interval between two consecutive passes of the moon through perigee (or apogee) is perigee month (27.5546 days). The interval between two full moons is about 29.5 days. Because the perigee time and the full moon time of the moon can be accurately calculated every month, we can calculate when the super moon can be seen by using their respective operating cycles. How is the super moon formed? The so-called super moon refers to the new moon or full moon. At that time, the moon was closest to the earth, so the visible moon was bigger and more round. A super moon is a new moon or a full moon. At this time, the distance between the moon and the earth is closer than usual, so it looks bigger and rounder. This is entirely because the moon's orbit around the earth is a nonstandard ellipse, so the distance between the moon and the earth is not constant. The average distance between the moon and the earth is about 384,000 kilometers, the nearest is about 360,000 kilometers, and the farthest is about 400,000 kilometers. The change of the distance between the moon and the earth leads to the change of the apparent diameter of the moon. When we turn to the nearest distance from the earth, the astronomical phenomenon of the super moon appears.