Complex sentence: Currently, the star has a luminosity of 7.4 million, which, according to the formula for density and the Stefan-Boltzmann law, translates to 73% of its Eddington luminosity.
Split into simpler sentences: Currently, the star has a luminosity of 7.4 million. Applying the formula for density and the Stefan-Boltzmann law, the star is 73% of its Eddington luminosity.