The full moon is seen as it rises near the Lincoln Memorial, March 19, 2011, in Washington D.C. This type of full moon is called a "Super Perigee Moon" since it is at it's closest to Earth. The last full moon so big and close to Earth occurred in March of 1993. A supermoon is the coincidence of a full moon or a new moon with the closest approach the Moon makes to the Earth on its elliptical orbit, resulting in the largest apparent size of the lunar disk as seen from Earth. The technical name is the perigee-syzygy of the Earth-Moon-Sun system. The term "supermoon" is not astronomical, but originated in modern astrology. The association of the Moon with both oceanic and crustal tides has led to claims that the supermoon phenomenon may be associated with increased risk of events such as earthquakes and volcanic eruptions, but the evidence of such a link is widely held to be unconvincing. The March 19, 2011, supermoon was 221,567 miles away from Earth. It was about 20 percent brighter and 15 percent bigger than a regular full moon.