The absolute magnitude is the measure of the luminosity of the celestial objects. Tully-Fisher relation is a relationship between the intrinsic luminosity of spiral galaxy and the width of its emission lines. The absolute magnitude of sun I band calculator calculates the absolute magnitude of sun band based on the observed maximum rotation velocity and galactic inclination.
Find Iband absolute magnitude of the I band of sun if the observed maximum rotation velocity is 562 km/s and Galactic Inclination is 2?
MI ≃ -7.68 log10 (2vrot / sin i) - 2.58