The eROSITA X-ray telescope on board the Spectrum-Roentgen-Gamma (SRG) spacecraft observed the field of the UKIDSS Ultra-Deep Survey (UDS) in August-September 2019, during its flight to Sun-Earth L2 point. The resulting eROSITA UDS (or eUDS) survey was thus the first eROSITA X-ray imaging survey, which demonstrated the capability of the telescope to perform uniform observations of large sky areas. With a moderate single-camera exposure of 150ks, eUDS covered ~5deg^2^ with the limiting flux ranging between 410^-15^ and 510^-14^erg/cm^2^/s in the 0.3-2.3keV band. We present a catalogue of 647 sources detected at likelihood >10 (~4sigma) during the eUDS. The catalogue provides information on the source fluxes in the main energy band 0.3-2.3keV and forced photometry in a number of bands between 0.3 and 8keV. Using the deeper 4XMM-DR12 catalogue, we have identified 22 strongly variable objects that have brightened or faded by at least a factor of ten during the eROSITA observations compared to previous observations by XMM-Newton. We also provide a catalogue of 22 sources detected by eROSITA in the hard energy band of 2.3-5keV.

Cone search capability for table J/MNRAS/528/1264/tablea1 (eUDS X-ray catalog, converted from eUDS.fits)

Cone search capability for table J/MNRAS/528/1264/tablea2 (eUDS forced photometry of 4XMM-DR12 sources, converted from eUDS_4XMM-DR12.fits)