Astronomers from the Astronomical Observatory of Padova, Italy, and elsewhere have conducted observations of 25 stars as part of the COPAINS Pilot Survey. As a result, they detected four new brown dwarfs that received designations HIP 21152 B, HIP 29724 B, HD 60584 B and HIP 63734 B. The finding is reported in a paper published May 4 on the arXiv pre-print server.