define perigee-syzygy
The term âSupermoonâ is a more modern pop culture creation that first appeared in a 1979 astrology publication, and the name stuck. A more accurate astronomical term for a âSupermoonâ is a perigee-syzygy Full Moon or Proxigean Moon, but those just donât seem to be able to âfill the seatsâ when it comes to internet hype.