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The speed and trajectory of the object A/2017 U1 suggested that it did not come from our Solar System, and that it will leave our Solar System again. ‘Oumuamua, as it is now called, was our ...
Oumuamua could not have obtained its velocity from any known object in the Solar System. We have a complete census of objects big enough to do it within a volume out to 21 AU.
Predictions of the LSST Solar System Yield: Near-Earth Objects, Main Belt Asteroids, Jupiter Trojans, and Trans-Neptunian Objects. The Astronomical Journal (submitted to arXiv) , 2025 DOI: ...
37,000 trans-Neptunian objects, residents of the distant Kuiper Belt — nearly 10 times the current census — shedding light on Neptune’s past migration and the outer solar system’s history.