Margaret Turnbull at the Carnegie Institution in Washington DC looked at criteria such as the star's age and the amount of iron in its atmosphere.
Her top candidate was beta CVn, a Sun-like star 26 light-years away.
BBC NEWS http://news.bbc.co.uk/1/hi/sci/tech/4728228.stm
QUOTE
"I've chosen five to advertise the very best places to move to if we had to, or to point the telescope at," she told the BBC.