# How many arcseconds the light of a star unfolds in the vicinity of jupiter?

One of the main demonstrations made to test the theory of relativity were the images of the solar eclipse of May 26, 1919, (causing a shift in the positions observed in celestial coordinates of its source stars 1.7 arcsec, the amount predicted by theory). If the same experiment was carried out, but with a star on the periphery of the edge of jupiter, the same effect would occur? Few arcseconds that star would unfold?

For the sun, the deflection of starlight is $1.75''/b$, where $b$ is the apparent distance from the sun's center in solar radii. I'm going to make an educated guess that the 1.75 arcseconds is proportional to $GM_\text{sun}$. Jupiter has something like 1/1000th the sun's mass, so the deflection of starlight for an object occulted by Jupiter would be milli-arcseconds. That starlight can get perhaps ten times closer to Jupiter's center than to the sun's center without getting absorbed doesn't increase the deflection very much.