> The comparisons new global solution of earth orientation > parameters from optical astrometry in 1900-1990 with > other systems such parameters > A.Korsun',G.Kurbasova (Main Astronomical Observatory > of Ukrainian Academy of sciences,Kiev,Ukraine) > J.Vondrak( Astronomical Institute,Czech Republic) > > The project of preparing a new global adjustment of Earth > orientation parameters from optical astrometry observations since > 1900 in the HIPPARCOS reference frame was initiated in 1988. > Since the HIPPARCOS star catalog is still not available, provisions > have been made to homogenize the local star catalogs into a common > reference system by using the comparison with the HIPPARCOS Input > Catalog. The results of new global solutions of Earth orientation > parameters were presented by J.Vondrak at the Joint Discussion 19 > of IAU 22nd General Assembly in the Hague. > Our report presents the results of the comparisons new global > solution with such series of the Earth orientation parameters: > - polar motion in 1900-1979 from results of the International > Latitude Service in a homogeneous system,( by S.Yumi,K.Yokoyama), > - polar motion in 1900-1990 in system of the mean pole of epoch > (kiev's series of the polar coordinate).