Hello,
I've been trying to solve for the luminosity of Gliese 581 using its brightness. I've been using the equation below:
F = (L/(4*pi*r^2))
I have the flux as the absolute brightness of Gliese 581, which is 11.6. The distance, r, to the star is 1.89210568 × 10^17 meters. However, when I...