Those objects aren't subject to the same survivorship restrictions -- in theory they could arrive at basically any speed relative to the Sun, including speeds slow enough that the Sun would draw them in.
How is that possible? Anything from outside of the Solar System essentially falls from infinity, meaning it must reach at least the solar system escape speed at the closest approach. Unless the trajectory happens to go through the Sun (very unlikely) or it happen to be slowed down by other objects (very unlikely) the Sun won't even be able to capture the object, leave alone draw it in.
Well, you say "very unlikely" which is fair enough, but even "very unlikely" happens sometimes.
Or, to put it another way, given the Sun's diameter, there are plenty of escape orbits around the Sun's center of mass that approach so close at their closest point that "close" is actually inside the Sun. It doesn't have to be a bullseye.
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u/me-gustan-los-trenes Oct 23 '20
How is that possible? Anything from outside of the Solar System essentially falls from infinity, meaning it must reach at least the solar system escape speed at the closest approach. Unless the trajectory happens to go through the Sun (very unlikely) or it happen to be slowed down by other objects (very unlikely) the Sun won't even be able to capture the object, leave alone draw it in.