G 139-17

[ α=17.2h, δ=11.9° | M3.97 | d=19.3 pc ]
GJ 3990
Best fit:
Tstar = 3129 ± 7 K , Lstar = 0.00734 ± 9e-05 LSun , Rstar = 0.292 ± 0.002 RSun