HD 230017B

[ α=18.9h, δ=11.0° | M3.5V | d=18.6 pc ]
GJ 734 B , HD 230017B
Best fit:
Tstar = 3240 ± 80 K , Lstar = 0.02 ± 0.0009 LSun , Rstar = 0.44 ± 0.02 RSun