Absolutely.
Back on this object - yeah, it’s not *likely* to be a starship, but it’s checked off several boxes from the “possible incoming starship” profile and caution says that we should probably keep a close eye on it.
If the thing turns and goes constant bearing, decreasing range, then we should really worry.
Let’s say it is a starship/probe. I doubt there is anything we could do about it. Launch a nuke? Potential suicide. And if it is a Von Neumann type probe, it’s probably not the first by a long shot and may decide not to mess with the aliens that already arrived here hundreds, thousands, or millions of years ago. Just accelerate on to its next target star system.