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Sep. 9th, 2014 at 11:38 AM
Perigee Moon
Perigee is the term for the point on an orbit closest to the central point. For the Moon, perigee is therefore the point at which the Moon is closest to the Earth.
This image shows the August 10 (2014) “Supermoon” (a full moon at perigee) over the Old Post Office and Clock Tower, Washington, USA.
The next event will occur (unsurprisingly about a month later, i.e. the length of the Moon's orbit), on September 9.
-CB
Image: NASA/Bill Ingalls under CC2.0, Nikon D4 70.0-200.0 mm f/2.8 1/15s ISO=3200 https://www.flickr.com/photos/nasahqphoto/14880562554/in/photostream/