Turning up the heat on `Oumuamua

Status Report From: e-Print archive
Posted: Thursday, January 3, 2019

John C. Forbes, Abraham Loeb

(Submitted on 2 Jan 2019)

We explore what may be learned by close encounters between extrasolar minor bodies like `Oumuamua and the Sun. These encounters may yield strong constraints on the bulk composition and possible origin of `Oumuamua-like objects. We find that such objects collide with the Sun once every 30 years, while about 2 pass within the orbit of Mercury each year. We identify preferred orientations for the orbits of extrasolar objects and point out known Solar System bodies with these orientations. We conclude using a simple Bayesian analysis that about one of these objects is extrasolar in origin, even if we cannot tell which.

Comments: Submitted to ApJL

Subjects: Earth and Planetary Astrophysics (astro-ph.EP)

Cite as: arXiv:1901.00508 [astro-ph.EP] (or arXiv:1901.00508v1 [astro-ph.EP] for this version)

Submission history

From: John Forbes 

[v1] Wed, 2 Jan 2019 19:01:41 UTC (151 KB)

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