Stars in Heinlein's _Methuselah's Children_

[Alberto Monteiro]

Does anyone know what are the stars ZD9817 (Jockaira, approximately
20 light-years away from Sol) and PK3722 (Little People's, 32 light-years
from Jockaira)?

I did find a star number 3722 in the LHS catalog, but this star is 84 
light-years away (if I did the math correctly, the paralax is 38.1 plus
or minus 3.6), and I don't have its spectral type

Alberto Monteiro