Gliese 581
Star
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Gliese 581 is a red dwarf star of spectral type M3V at the center of the Gliese 581 planetary system, about 20.5 light years away from Earth in the Libra constellation. Its estimated mass is about a third of that of the Sun, and it is the 101st... Wikipedia
Radius: 129,250 mi
Mass: 6.166 × 10^29 kg (0.31 M☉)
Gravity: 0.0492 m/s²
Surface temperature: 3,480 K
Luminosity: 0.002 L☉
Coordinates: RA 15h 19m 27s | Dec -7° 43′ 20″
Star system: Gliese 581 planetary system