super moon

Noun

supermoon (plural supermoons)

1. A full moon or new moon, when the Earth–Moon distance is in the lowest tenth of its range.
   • And should the moon happen to hit its ever-shifting orbital perigee at the same time that it lies athwart from the sun, we are treated to a so-called supermoon, a full moon that can seem close enough to embrace – as much as 12 percent bigger and 30 percent brighter than the average full moon. […]...2014 September 7, Natalie Angier, “The Moon comes around again [print version: Revisiting a moon that still has secrets to reveal: Supermoon revives interest in its violent origins and hidden face...

   Synonyms:

   perigee moon

   Antonyms:

   micromoon