Speckle Interferometry at SOAR in 2020

The results of speckle interferometric observations at the 4.1 m Southern Astrophysical Research Telescope in 2020, as well earlier unpublished data, are given, totaling 1735 measurements 1288 resolved pairs and nonresolutions 1177 targets. We for first time 59 new or subsystems known binaries, mostly among nearby dwarf stars. This work continues our long-term program. Its main goal is to monitor orbital motion close including members high-order hierarchies Hipparcos solar neighborhood. also report 892 young moving groups associations, where we 103 pairs.