Ross 128

[ α=11.8h, δ=0.8° | dM4 | d=3.4 pc ]
GJ 447 , HIP 57548 , TYC 272-1051-1
Best fit:
Tstar = 3053 ± 2 K , Lstar = 0.0039 ± 3e-05 LSun , Rstar = 0.223 ± 0.001 RSun