  755 new CCD observations during the years 2014-2016 have been reduced to
derive the precise positions of Triton, the first satellite of Neptune. The
observations were made by the 1 m telescope at Yunnan Observatory over fifteen
nights. The positions of Triton are measured with respect to the stars in Gaia
DR1 star catalogue. The theoretical position of Triton was retrieved from the
Jet Propulsion Laboratory (JPL) ephemeris nep081xl, while the position of
Neptune was obtained from the JPL ephemeris DE431mx. Our results show that the
mean O-Cs (observed minus computed) are 0.042 and -0.006 arcsec in right
ascension and declination respectively. The dispersions of our observations are
estimated at about 0.012 arcsec in each direction.
