I believe you would call it the Moon at Perigee

by Jeff, Kayla,and JJ
(Moncton, N.B., Canada)

My wife, my son, and I were driving my parents house. As the night got closer, as did our Moon. We noticed the Moon rise up as usual, but, around 9:45 we saw that our Moon was just a little bit larger, or closer. So we took a drive up to the mountain to get a better picture...

March 20th, 2011, 10:00

Barry's Response - Here's a word for you: Syzygy

That's what happens when three objects in the sky line up. It happens every time there is an eclipse (which happens when there is either a full moon or no moon).

When one of these occurs at lunar perigee, we call that a supermoon (and not when Clark Kent loses his underwear), which is what you witnessed. When it is low in the sky you have one that looks like a harvest moon, and generally it can appear noticeably larger (closer) and pull tides noticeably stronger as well.