Astronomy.fm Amateur Astronomy Picture of the Day, October 28 2011, Perigeo/Apogeo

Moon at perigee was photographed on March 20,2011 when the Moon (Super Moon) was the largest in nearly twenty years. This is the point in the orbit of the moon or a satellite at which it is nearest to the earth.

The Full Moon was photographed in apogee on October 12 (Columbus Day) at dawn, at the farthest point of its elliptical orbit this year.

Both pictures of the Moon have been captured as it passes through the meridian.

Since the Moon’s sidereal period differs from its synodic period, the perigee of the Moon (the point where it is closest to the Earth) does not stay in sync with the phases of the Moon. So, for example, the “Hunter’s Moon” of October does not correspond to any special timing of the Moon’s distance from the Earth. This is why the Hunter’s Moon is not, in general, brighter than any other regular full moon, though it is often perceived that way.

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