Y3.5V

Thus far I've not seen any objects classified Y3.5V in the literature.

Kirkpatrick20 assigned Y2 to WISE J1828+2650 and Y4 to WISE J0855−0714,
with no objects with intermediate types.

Teff(Y3.5V) = 268 K ; interp Y1V(360K)-Y4V(250K)

W1-W2(Y3.5V) = 5.72 ; Kirkpatrick19 polynomial