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Super Luna is the perigee, the largest in nearly 20 years. "The last full moon so big and close to Earth as is the case in March 1983," says Geoff Chester of the U.S. Naval Observatory in Washington DC. "It is worth looking at."
The Full Moon vary in size due to the oval shape of the orbit of the moon. Is an ellipse with one side (perigee) about 50,000 miles closer to Earth than the other (peak).
Moons near the perigee are 14% larger and 30% brighter Moons that occur under side of apogee of the orbit of the moon.
"The Full Moon 19 March occurs in less than an hour before perigee, almost perfect coincidence that only happens every 18 years or so, "added Chester.
Desatres and Super Moon perigee
Source: NASA http://science.nasa.gov/
perigee A full moon brings with it a tide of perigee extras, but this is not to worry , according to NOAA. In most places, the moon's gravity pulls at perigee tide waters only a few centimeters (an inch or so) more than normal. Local geography may amplify the effect by about 15 centimeters and not exactly a great flood to the area.
The Moon appears larger when it is shining through objects in the foreground, leading to a "moon illusion" as if it were larger.
Desatres and Super Moon perigee
In fact, contrary some reports circulating on the Internet, do not trigger Moon perigee natural disasters. The super Luna March 1983, for example, went without incident. And Luna December 2008, almost super, also passed harmlessly.
Source: NASA http://science.nasa.gov/
Carla Gallo
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