I worked in the area a long time ago, so as it happens, no, but I can see how it's unintuitive! Surface gravity in this case would be the visible radius - the

I worked in the area a long time ago, so as it happens, no, but I can see how it's unintuitive! Surface gravity in this case would be the visible radius - the same way we talk about the surface gravity of the sun, and mean the photosphere.