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We analyze the properties of the clusters of galaxies in the region of theUrsa Major (UMa) supercluster using observational data from SDSS and 2MASScatalogs. The region studied includes a supercluster (with a galaxy and clusteroverdensity of 3 and 15, respectively) and field clusters inside the 150 Mpcdiameter surrounding region. The total dynamical mass of 10 clusters ofgalaxies in UMa is equal to 2.25 10^15 M_sun, and the mass of 11 clusters ofgalaxies in the UMa neighborhood is equal to 1.70 10^15 M_sun. The fraction ofearly-type galaxies brighter than M_K*+1 in the virialized regions of clustersis, on the average, equal to 70%, and it is virtually independent on the massof the cluster. The fraction of these galaxies and their average photometricparameters are almost the same both for UMa clusters and for the clusterslocated in its surroundings. Parameters of the clusters of galaxies, such asinfrared luminosities up to a fixed magnitude, the mass-to-luminosity ratio,and the number of galaxies have almost the same correlations with the clustermass as in other samples of galaxies clusters. However, the scatter of theseparameters for UMa member clusters is twice smaller than the correspondingscatter for field clusters, possibly, due to the common origin of UMa clustersand synchronized dynamical evolution of clusters in the supercluster.

Analysis of the Properties of Clusters of Galaxies in the Region of the Ursa Major Supercluster