V* V2578 Oph

[ α=16.4h, δ=-13.6° | K2V | d=21.3 pc ]
GJ 621 , HD 147776 , HIP 80366 , TYC 5638-322-1
Best fit:
Tstar = 4840 ± 10 K , Lstar = 0.225 ± 0.001 LSun , Rstar = 0.676 ± 0.004 RSun