Ross 263

[ α=21.9h, δ=19.8° | M3.0Ve | d=22.0 pc ]
GJ 4240
Best fit:
Tstar = 3296 ± 5 K , Lstar = 0.0186 ± 0.0002 LSun , Rstar = 0.418 ± 0.003 RSun