Rendezvous with Rama. They just happened to have a spaceship in the vicinity of the visitor that could help with it. (Granted this Jupiter mission is unmanned, and isn’t going to LAND on the visitor. But I’m still reminded of the story).
They say it will not come any closer than just inside the orbit of Mars and then head back out to infinity.
But what if they are wrong?..............
Truly masterful Science Fiction writing. Couldn’t put the book down. The only book that (imho) eclipsed Heineken, Clark and Asimov is Project:Hail Mary by Andy Weir
While not nearly as prolific as these other masters; I thought Hail Mary was a really great story