Well ... that's not quite so easy to say. Apollo 10's Lunar Module (Snoopy)'s Ascent Stage was sent into solar orbit. However, it wasn't particularly closely tracked, and it's nearly certainly come very close to Earth or Moon at least once since then. If it crashed into the Moon or the Earth's atmosphere then, it probably would have gone unnoticed (alas). If it didn't, it very likely got its orbit wildly perturbed at least that once. I don't think being tossed into the Sun is probable from a single Earth-pass, but it's possible; it could also have been tossed towards Jupiter's domain of influence and goodness knows what's become of it.
So Snoopy is the most correct answer, but we don't actually know that it still exists.
Re: Trivia question for you:
Well ... that's not quite so easy to say. Apollo 10's Lunar Module (Snoopy)'s Ascent Stage was sent into solar orbit. However, it wasn't particularly closely tracked, and it's nearly certainly come very close to Earth or Moon at least once since then. If it crashed into the Moon or the Earth's atmosphere then, it probably would have gone unnoticed (alas). If it didn't, it very likely got its orbit wildly perturbed at least that once. I don't think being tossed into the Sun is probable from a single Earth-pass, but it's possible; it could also have been tossed towards Jupiter's domain of influence and goodness knows what's become of it.
So Snoopy is the most correct answer, but we don't actually know that it still exists.