  We present a catalogue of galaxy clusters detected in the Planck all-sky
Compton parameter maps and identified using data from the WISE and SDSS
surveys. The catalogue comprises about 3000 clusters in the SDSS fields. We
expect the completeness of this catalogue to be high for clusters with masses
larger than M_500 =~ 3x10^14 Msun, located at redshifts z<0.7. At redshifts
above z=~0.4, the catalogue contains approximately an order of magnitude more
clusters than the 2nd Planck Catalogue of Sunyaev-Zeldovich sources in the same
fields of the sky. This catalogue can be used for identification of massive
galaxy clusters in future large cluster surveys, such as the SRG/eROSITA
all-sky X-ray survey.
