UCAC5 open clusters membership and proper motion

This follows our previous studies with the UCAC2 and UCAC4 catalogues, but now using improved proper motions in the GAIA reference frame. In the present study results were obtained for a sample of 1108 open clusters.

For five clusters, this is the first determination of mean proper motion, and for the whole sample, we present results with a much larger number of identified astrometric member stars than on previous studies. It is the last update of our Open cluster Catalogue based on proper motion data only. Future updates will count on astrometric, photometric and spectroscopic GAIA data as input for analyses.