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Alternative forms[edit]


super- +‎ moon

Coined by astrologer Richard Noelle in 1979:

SuperMoon is a word I coined in a 1979 article for Dell Publishing Company's HOROSCOPE magazine, describing 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.
— Richard Noelle [1]


supermoon ‎(plural supermoons)

The "Supermoon" of March 19, 2011 (right), compared to a rather "average" moon of December 20, 2010 (left)
  1. (astrology, astronomy) a full moon or new moon, when the Earth–Moon distance is in the lowest tenth of its range

Usage notes[edit]

Some claim this is not a syzygy unless a solar eclipse or lunar eclipse also occurs, but most references disagree.



See also[edit]


  1. ^ Nolle, Richard, "Supermoon", Astropro. URL accessed on 14 March 2011; no publication date; modified March 10, 2011.