“Why don’t you start with stating what you claim to be correct about.” [excerpt]~21 arcseconds of difference between actual and observed position of the Sun.
“Try supporting this claim with a linked reference and get back to me.” [excerpt]That wikipoodle article you so kindly linked to.
Then I would say that the onus is on LeGrande to dispute the article or further clarify his position.
See how easy that was :)
Just kidding.