The Biggest Moon of 2017 will be visible on Sunday 3rd of December, which will be the most impressive of all this year’s full moon. On that day, our satellite will be approaching the Earth very close to 358,400 kilometers, so the moon will be 7% larger and 16% brighter than an ordinary full moon.
The Moon follows an elliptical trajectory and its distance from our planet is not stable. Thus, both the closest point of the (perigee) and the distant (apogee), show fluctuations from month to month. The average Earth-Moon distance (382,900 km) rises by about 5% at the peak and decreases by 5% in the perimeter.
The term “super-moon”, which means that the full moon coincides with the perimeter, is not scientific, but was created in 1979 by astrologer Richard Nole. It has also been adopted by some with the term micro-moon or mini-moon when the full moon coincides with the apogee. To have a super-moon, the moon must be less than 360,000 kilometers from the center of the Earth.
In December this year, the full moon and the periodele differ in less than a day. The super-full moon will be at 17:47 GMT on Sunday December 3rd, while the moon’s perihelion (the closest to the Earth) will happen on Monday morning at 10:42 GMT.
In the perimeter the Moon will be 357,492 kilometers away from the Earth, while at the time of the full moon a little more (357,987 km). The shortest and most distant from the Earth (406.268 km) full moon of 2017 had occurred on June 9, near its peak.
In a super-Moon the moon looks about 7% larger than a typical full moon and 12% to 14% larger than a full moon (when the moon is at the peak). Also, in the super-moon the moon looks 16% brighter than an average full moon and 30% brighter than a micro-full moon.
January 2018 will have two full moons on January 2 and 31, both of which are considered super-moons, because the moon will again be near his cellar. In fact, the full moon of January 31 will be combined with a total eclipse of the Moon.
The super-full moons in the northern hemisphere during the winter months seem larger than the rest of the year, because at this time of year the Earth is closer to the Sun. Because of this, the gravity of the Sun pulls the fang closer to the Earth. So a winter super-moon looks bigger and brighter than a summer – but it’s often harder for anyone to enjoy because of bad weather.
In any case, the best time to see a super-full moon is as soon as the moon “rises” just above the horizon line. In this position, the moon looks larger and brighter than when it rises up in the sky, because when it is low, one can compare it with elements of the landscape (hills, buildings, etc.).
The post-war, the closest to Earth super-moon was that on January 26, 1948, and the next time the full moon would come even closer to Earth, it would be on November 25, 2034. And because there are concerns over time that a super-moon can “trigger” natural disasters, NASA scientists and others who have studied the issue do not confirm these phobias.