  1I/2017 U1 'Oumuamua is the first interstellar object recorded inside the
Solar System. We try to answer the main question: where does it come from? To
this aim we searched for close encounters between 'Oumuamua and all nearby
stars with known kinematic data during their past motion.We had checked over
200 thousand stars and found just a handful of candidates. If we limit our
investigation to within a 60 pc sphere surrounding the Sun, then the most
probable candidate for the 'Oumuamua parent stellar habitat is the star UCAC4
535-065571. However GJ 876 is also a favourable candidate. Moreover, the origin
of 'Oumuamua from a much more distant source is still an open question.
Additionally, we found that the quality of the original orbit of 'Oumuamua is
accurate enough for such a study and that none of the checked stars had
perturbed its motion significantly. All numerical results of this research are
available in the Appendix.

Earth and Planetary Astrophysics