A new orbit of Triton was provided by our previous work,benefitted by new Gaia Data,both in a new precise reduction of charge-coupled device observations and in the planetary ephemeris INPOP 19a.In this paper,we provide a new ephemeris for another main Neptunian satellite,Nereid.The orbit is fitted for the newest observations,including 2075 ground-based observations during the period 1949-2018 and 83 space observations acquired by the Voyager 2 spacecraft in 1989.The dynamical model used here is consistent with that of our previous work.For the ground-based absolute observations of Nereid,the root-mean-square deviations are 0.201“ in right ascension and 0.189” in declination.Finally,a comparison with the HORIZONS ephemeris is made and discussed.