Y3V Thus far I've not seen any objects classified Y3V in the literature. Kirkpatrick20 assigned Y2 to WISE J1828+2650 and Y4 to WISE J0855−0714, with no objects with intermediate types. Teff(Y3V) = 287 K ; interp Y1V(360K)-Y4V(250K) W1-W2(Y3V) = 5.36 ; Kirkpatrick19 polynomial