A Γ-based Forecast of Interstellar Object Arrivals into the Inner Solar System Using Gaia data

To the point

Lukas Zalesky and team estimate that about 7 interstellar objects pass within 1 AU of the Sun each year, most moving under 100 km/s with a median around 38 km/s, originating mainly from the Milky Way's thin disk, and this suggests that future rendezvous with these objects could be scientifically feasible.

Understanding the Origin and Arrival Rates of Interstellar Objects
astrobites.org

Understanding the Origin and Arrival Rates of Interstellar Objects

Where do interstellar objects come from? And how many should we expect to find every year?