Wait, so this object is going to pass quite close to Jupiter, Mars, and Venus? And the Juno probe, which was planned to be decommissioned soon anyway, could potentially be maneuvered to follow and get close to the object? Kind of uncanny and kind of a science fiction plot, but fun to think about.
https://en.wikipedia.org/wiki/File:3I_ATLAS_animation2.webm
It definitely gets surprisingly close to Mars and Jupiter.