Practical Astronomy and Geodesy It will then follow, the distance from the earth from the sun and the mean daily motion of the former in its orbit being supposed to be known, that the earth must describe in the orbit an arc subtending at the sun an angle of 20".36 in advance of the place which it would occupy if no time elapsed in that passage. The effect of aberration on the place of the sun is, therefore, the same as that which takes place on a star situated in the pole of the ecliptic.
Now you seem to be quoting the inverse angle from the sun to the earth which is fine. You two like to look at things from the back end don't you : )