It is called superluna to the coincidence of the full moon or new moon with the closest approach to Earth this (the perigee). This happens because the lunar orbit is elliptical. In such cases it is usually appreciated something larger and brighter than normal, according to wp.
“SuperMoon is a word I coined in a 1979 article for Dell Publishing Company’s HOROSCOPE magazine, describing a new or full moon which occurs with the Moon at or near (within 90% of) its closest approach to Earth in a given orbit.” “SuperLuna is a word I coined in a 1979 article for the HOROSCOPE magazine of Dell Publishing Company, describing a new or full moon that occurs with the Moon at or near (within 90%) of its closest approach to Earth. in a certain orbit. “
That is, a new or full moon whose distance relative to the apogee of its orbit is greater than or equal to 90%. The term was originally introduced because, according to Nolle, the superlunas would be associated with major hurricanes, volcanic eruptions and earthquakes. Nolle introduced the term in order to characterize these influences.
The inhabitants of the Southern Hemisphere will be able to witness this Friday a wonderful cosmic spectacle, since for the first time since December 1974 a partial solar eclipse caused by a supermoon can be observed, reports National Geographic, according to rt.
The supermoon will pass between Earth and the Sun, but the satellite will cover only a third of the star. The supermoon phenomenon occurs when the new moon or full moon is at the point closest to Earth, which makes the satellite appear larger.
The eclipse will be visible from the southern coast of Australia, Tasmania, the Stewart Island of New Zealand and the northern coast of Antarctica, while the inhabitants of the Northern Hemisphere will not be able to enjoy the phenomenon.
This partial solar eclipse will be the second of this year. The third and last phenomenon of these characteristics will be visible on August 11 in northern Europe and in northern and eastern Asia. In total, solar eclipses usually occur between two and five times a year.