The zodiac was in use by the Roman era, based on concepts inherited by Hellenistic astronomy from Babylonian astronomy of the Chaldean period (mid-1st millennium BC), which, in turn, derived from an earlier system of lists of stars along the ecliptic [REF].
Although the zodiac remains the basis of the ecliptic coordinate system in use in astronomy besides the equatorial one,[REF] the term and the names of the twelve signs are today mostly associated with horoscopic astrology [REF].