Calculating abs mag without app mag.

Is there some way I can calculate the absolute magnitude of an object knowing only it's, Temperature, Radius, and Distance? I can't seem to find an appropriate equation.

I would think so. Since they get the Teff of a star by knowing the distance, Av, and spectra type. Radius will probably fall to dwarf, giant, etc. I'll try to find the equation.

You could calculate bolometric magnitude from those quantities but for visual you'd need to figure out the bolometric correction.