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   E·phem·er·is

   /əˈfem(ə)rəs/

   

   noun

   • 1. a table or data file giving the calculated positions of a celestial object at regular intervals throughout a period: "you can compute an ephemeris for any comet that is discovered and plot an accurate finder chart"
   • ▪ a book or set of such tables or files.

   Word Origin early 16th century: from Latin, from Greek ephēmeros ‘lasting only a day’.

   Scrabble Points: 16

   • E

     1

   • P

     3

   • H

     4

   • E

     1

   • M

     3

   • E

     1

   • R

     1

   • I

     1

   • S

     1

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