from Wikipedia:
It is about two degrees north of
Beta Librae, the brightest star in the
constellation Libra.
and
The name
Gliese 581 refers to the
Star catalogue of nearby stars by
Wilhelm Gliese. Other names of this star include
BD-07° 4003 (
BD catalogue, first known publication) and
HO Librae (
variable star designation).
cheers, Gordon