As the Earth revolves around the Sun, it is moving at a velocity of approximately 30 km/s. The speed of light is approximately 300,000 km/s. In the special case where the Earth is moving perpendicularly to the direction of the star (i.e. if SEE’ in the diagram is 90 degrees), the angle of displacement, SES’, would therefore be (in radians) the ratio of the two velocities, i.e. 1/10000 or about 20.5 arcseconds.
Yes that is stellar aberration but that is not what mrjesse was talking about .
It is talking about the aberration from a star to the earth. Apparently you and mrjesse don't know the difference between our sun and a distant star, but that doesn't surprise me in the least.