We analysed local geodetic ties (eccentricities) between the VLBI, SLR and GPS reference points of the collocation station «Simeiz-Katzively». The conclusion about in stability of this geodynamic test area is confirmed. Regular, with a period of 1-2.5 years, determination of the eccentricities is recommended for this collocation station. Linear time model is developed for local geodetic ties of this test area. The eccentricities were compared with ITRF2000 data. Systematic errors of ITRF2000 connected with incorrect determination of velocities of VLBI, SLR and GPS reference points of the collocation station with equal DOMES number were detected. It is recommended to assign different domain numbers to these reference points. The measured eccentricities were compared with the results of individual solutions for VLBI, SLR and GPS observations. Their disagreement are discussed.