* 15 Mon

[ α=6.7h, δ=9.9° | O7V+B1.5/2V | d=281.7 pc ]
* 15 Mon , * 15 Mon A , * S Mon , * S Mon A , HD 47839 , HIP 31978 , HR 2456 , TYC 750-1880-1
Best fit:
Tstar = 27800 ± 800 K , Lstar = 12000 ± 4000 LSun , Rstar = 4.7 ± 0.7 RSun