BD+18 375

[ α=2.9h, δ=18.8° | K0 | d=56.6 pc ]
HIP 13631 , TYC 1227-1100-1
Best fit:
Tstar = 5200 ± 20 K , Lstar = 0.383 ± 0.002 LSun , Rstar = 0.763 ± 0.005 RSun