HD 191639

[ α=20.2h, δ=-8.8° | B2II | d=730.2 pc ]
HD 191639 , HIP 99457 , HR 7709 , TYC 5740-2387-1
Best fit:
Tstar = 18500 ± 900 K , Lstar = 6000 ± 1000 LSun , Rstar = 7.7 ± 0.4 RSun