We got a preview coming out of the Thai Kitchen last night.
But Earthsky quibbles with the word 'supermoon.'
We astronomers call this sort of close full moon a perigee full moon. [The LA Times article also mentions perigree.] The word perigee describes the moon’s closest point to Earth for a given month. But last year, when the closest and largest full moon occurred on March 19, 2011, many used a term we’d never heard: supermoon. We’ve heard this term again at this 2012 close full moon. What does it mean exactly? And how special is the May 5, 2012 supermoon?
. . . Will you be able to notice with your eye alone that tonight's full moon is bigger or brighter than usual? Astronomers say no, but it'll be fun to stand outside under tonight's full moon and know the moon is closer than it has been since March 19, 2011. The word supermoon didn’t come from astronomy. Instead, it came from astrology. Astrologer Richard Nolle of the website astropro.com takes credit for coining the term supermoon. In 1979, he defined it as:
…a new or full moon which occurs with the moon at or near (within 90% of) its closest approach to Earth in a given orbit (perigee). In short, Earth, moon and sun are all in a line, with moon in its nearest approach to Earth.
You can read more at Earthsky.