When will the supermoon 2019 be and who will you watch it with?

Purple Mountain Observatory released a sky preview on the 20th: In 2019, the "supermoon" will appear in the sky three times in a row, so when are these three days? Let’s take a look together.

When is the Super Moon 2019?

In recent years, the "supermoon" has become increasingly well-known, and every time it appears, it arouses great enthusiasm among people. Astronomical experts said that there will be a rare "three consecutive supermoons" in 2019, on January 21, February 19 and March 21. Among these three times, the second viewing experience was the best.

Among them, on January 21, the full moon occurred at 13:16 China time, and the distance between the earth and the moon was about 357,300 kilometers; on February 19, the full moon occurred at 23:54, and the distance between the earth and the moon was about 356,900 kilometers; on March 21, the full moon occurred at 9:43, and the distance between the earth and the moon was about 360,700 kilometers.

What is a Super Moon?

A "supermoon" occurs when the moon is closer to the Earth than usual during a new or full moon, making it appear larger and rounder.

How is a supermoon formed?

The moon's orbit around the earth is a non-standard 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 closest is about 360,000 kilometers, and the farthest is about 400,000 kilometers. This change in the distance between the moon and the earth causes changes in the apparent diameter of the moon.