At R = 0 {\displaystyle R=0} , I ( R = 0 ) = I e ⋅ e 7.67 ≈ 2000 ⋅ I e {\displaystyle I(R=0)=I_{e}\cdot e^{7.67}\approx 2000\cdot I_{e}} Thus, the central surface brightness is approximately 2000 ⋅ I e {\displaystyle 2000\cdot I_{e}} .
At R = 0 {\displaystyle R=0} , I ( R = 0 ) = I e ⋅ e 7.67 ≈ 2000 ⋅ I e {\displaystyle I(R=0)=I_{e}\cdot e^{7.67}\approx 2000\cdot I_{e}} Таким чином, центральна поверхнева яскравість приблизно 2000 ⋅ I e {\displaystyle 2000\cdot I_{e}} .