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Multi-epoch GHz Very Long Baseline Interferometry (VLBI) data of theradio-loud quasar J1101+7225 were analyzed to estimate the proper motion ofextended optically thin jet components. Two components separated from the corecould be mapped at 1.66 GHz, which is consistent with earlier observations. Inone case we found evidence of high apparent superluminal motion (beta_app=22.5+/-4) at large (deprojected) distances to the core (22 mas ~ 4 kpc at z=1.46). Typically in other quasars such high separation velocities are onlyfound much closer to the core component. Furthermore the Doppler factor, themagnetic field strength, and the angular size of the optically thick core werederived using published X-ray data. Analysis of 5 GHz VLBI data reveals theexistence of further jet components within the central 5 mas. Additionally thedata published so far on the GHz-spectrum were discussed at all angularresolutions. J1101+7225 turns out to be a standard quasar for studyingdifferent aspects of radio jet kinematics out to kpc-scales.Comment: 8 pages, 5 figures, accepted by A&

Relativistic jet motion in the core of the radio-loud quasar J1101+7225