On the dynamical history of the recently discovered interstellar object A/2017 U1 – where does it come from?

Piotr A. Dybczyński, Małgorzata Królikowska
(Submitted on 17 Nov 2017)

A/2017 U1 is the first interstellar object recorded inside the Solar System. We try to answer the obtrusive question: where does it come from? After a careful search in the close vicinity of the Sun we looked a bit further. Finally, we have checked over 200 thousand stars and found just a handful of candidates. If we limit our investigation to the Sun surroundings within about 30 pc, the most probable candidate for the A/2017 U1 parent stellar habitat is a star UCAC4 535-065571 but GJ 876 cannot be completely ruled out. However, the origin of A/2017 U1 from a more distant source is still an open question.

Comments:    13 pages, 4 main tables and 3 tables with data, submitted for publication as A&A Letter
Subjects:    Earth and Planetary Astrophysics (astro-ph.EP)
Cite as:    arXiv:1711.06618 [astro-ph.EP] (or arXiv:1711.06618v1 [astro-ph.EP] for this version)
Submission history
From: Piotr Dybczyński
[v1] Fri, 17 Nov 2017 16:42:40 GMT (18kb)
https://arxiv.org/abs/1711.06618