Complex sentence: Also included is a theoretical allowance for limb darkening yielding a diameter of 55.2 ± 0.5 mas--a figure which equates to a radius of roughly 5.6 AU (1,200 R ☉), assuming a distance of 197.0 ± 45 pc.
Split into simpler sentences: Also included is a theoretical allowance for limb darkening yielding a diameter of 55.2 ± 0.5 mas. The Bester estimate equates to equates to a radius of roughly 5.6 AU or (1,200 R ☉), assuming a distance of 197.0 ± 45 pc.