2017/11/30 by Piotr A. Dybczyński, Małgorzata Królikowska · 29 citations
Physics and Astronomy · #Astronomy and Astrophysical Research #Astrophysics and Star Formation Studies #Kinematics #Motion (physics) #Object (grammar) #Orbit (dynamics) #Proper motion #Solar System #Star (game theory) #Stars #Stellar, planetary, and galactic studies #astro-ph.EP
paper · pdf · doi:10.1051/0004-6361/201732309
published in Astronomy and Astrophysics 610, L11 (EDP Sciences) · 11 pages, 4 main tables and 3 tables with data, 8 figures, accepted for publication in A&A (v.4: rewritten and figures added)
arxiv created 2018/01/26 · openalex publication_date 2018/02/01 · openalex created_date 2018/02/23 · arxiv updated 2018/02/28 · openalex updated_date 2026/08/05
Here we try to find the origin of 1I/2017 U1 ’Oumuamua, the first interstellar object recorded inside the solar system. 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. However, 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.