[ephem.er.is] n, pl eph.e.mer.i.des [L, diary, ephemeris, fr. Gk ephemeris, fr. ephemeros] (1508): a tabular statement of the assigned places of a celestial body for regular intervals
EPHEMERIS
Meaning of EPHEMERIS in English
Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012