This is a list of brown dwarfs, obtained from
http://spider.ipac.caltech.edu/staff/davy/ARCHIVE/index.shtml

This uses the HTML listing, which I got by doing

curl -o src.html "http://ldwarf.ipac.caltech.edu/archive/version5/viewlist.php?table=ltdwarf&format=html"

Markus updates the data manually now and then.