HD 20809

[ α=3.4h, δ=49.2° | B5V | d=190.7 pc ]
HD 20809 , HIP 15770 , HR 1011 , TYC 3320-2812-1
Best fit:
Tstar = 12800 ± 100 K , Lstar = 540 ± 30 LSun , Rstar = 4.7 ± 0.1 RSun