From the Article

>Now, a team led by Amir Siraj, a student pursuing astrophysics at Harvard University, have outlined some of the physical parameters of such a mission, including the potential timeline, spacecraft speed, and optimal distance of a flyby.
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>Whereas past studies have mapped out the feasibility of the concept, Siraj and his co-authors, including Loeb, investigated the “requirements for a rendezvous mission with the primary objective of producing a resolved image of an interstellar object” and discuss “the characterization from close range of interstellar objects that, like ‘Oumuamua, don’t have an unequivocally identified nature,” according to a forthcoming study in the Journal of Astronomical Instrumentation that was posted on Sunday to the preprint server arXiv.