celestial pole
8.The maintenance of orientation of the international Earth Rotation Service(IERS)celestial reference frames from 1992 to 1995 are analyzed in this paper. In combination with the maintenance for years from 1988 to 1992, it is concluded that there are detectable variations in the orientation of IERS celestial reference frames from 1988 to 1995. The biggest shifts of the origin of right ascension and of the celestial pole are about 0. 4mas.

