The radiant power of the sun

$P_s=3.83\times {10}^{26}\text{W}$

The radius of the sun

$r_s=6.96\times {10}^8\text{m}$

The radiant emittance of the sun’s surface

$R_s=6.29\times {10}^7\text{W}/{\text{m}}^{\text{2}}$

The temperature of the sun’s surface

$T_s=5800\text{K}$