(Not a perigee moon but big nonetheless. Full Moon Set over Oakland, CA, March 21, 2008. Photo by Rebecca Bond.)
Tomorrow, March 19, 2011, we will not only have a full moon, but the moon’s orbit of the earth will be at Perigee (<—click for NASA explanation webpage)—meaning the closest distance of the moon to the earth in the moon’s orbit. Full moon perigee this close to the earth only happens approximately every 18 years. If you are lucky enough to have clear skies tomorrow evening, be sure to get out your camera and be ready to shoot as the moon shows up over the horizon. It should look super huge! Well actually 14% bigger and 30% brighter according to NASA. But, once it's up in the sky it may not look that much different than a regular full moon except brighter, and unfortunately, we are predicted to have rain all weekend long in most of California, so no go for me.
But wait, there’s more! Astronomical events that is... The Vernal, or Spring, Equinox is on Sunday, March 20, 2011, meaning the sun will be directly above the equator and daylight will be about 12 hours. A better explanation can be found at timeanddate.com.
Here’s a youtube video from NASAScience explaining the “Super Full Moon”: