G 153-57

[ α=16.5h, δ=-14.7° | M2.5V/M3V | d=21.8 pc ]
GJ 2121 , HIP 80817 , TYC 5639-843-1
Best fit:
Tstar = 3397 ± 7 K , Lstar = 0.0287 ± 0.0004 LSun , Rstar = 0.489 ± 0.005 RSun