Spectral classification of (relatively) bright stars

Affiliation
American Association of Variable Star Observers (AAVSO)
Sat, 06/01/2024 - 07:37

Hi all. I'm looking for spectral classification of WISEA J082158.50+402348.0 , there seems to be no data in VizieR, in NED and SDSS.

Any suggestion ?

Thanks a lot

Franco