I'm looking at various satellites, intending to make a movie of a satellite passage across the sky. I notice that what a satellite looks like in the Starry Night sky doesn't seem to match its listed apparent magnitude. For instance, a Starlink satellite with an apparent magnitude of +4.5 looks quite a bit brighter than the International Space Station with a magnitude less than -3. I tried to increase the brightness of the ISS with the pop-up box showing orbital elements for the ISS and also magnitudes, but that did nothing. Does this have anything to do with the fact that the ISS has a 3DS model associated with it? But that's not activated under normal observing-from-the-ground conditions, is it? Any ideas?