The high accuracy reached by solar limb observations , by helioseismic measurements and by Standard Solar Models ( SSMs ) calculations suggests that general relativity corrections are included when discussing the solar radius .
The Allen value ( R _ { \odot } = 695.99 \pm 0.07 Mm ) has to be reduced by 1.5 Km .
This correction , which is small as compared with present accuracy , should be kept in mind for future more precise measurements and/or calculations .