question: have any images been taken of anything “close” simultaneously or would it provide no benefit from a spacial perspective?
Webb got some pretty cool pictures of Jupiter, that's relatively close.
It can't take any pictures of the back side of the moon because it's always too close to the sun, as I understand it. Webb can't be pointed anywhere near the sun.
I suppose sooner or later it will be used to get a some pics of an asteroid.
You mean like a "binocular vision" kind of thing?
I can't see that being of too much use, especially since Webb and Hubble make images in different wavelengths of light. OTOH, they could be used to get the range to objects within the solar system with a high degree of accuracy using triangulation. Maybe by so doing, the pair could get really accurate estimates of track and velocity for deciding whether an asteroid or meteor is going to hit Earth, at some future time.
Just Neptune and Jupiter. I don’t know about Uranus..................