Oumuamua as a messenger from the Local Association

  title={Oumuamua as a messenger from the Local Association},
  author={Fabo Feng and Hugh R. A. Jones},
  journal={arXiv: Earth and Planetary Astrophysics},
  • F. Feng, H. Jones
  • Published 23 November 2017
  • Physics
  • arXiv: Earth and Planetary Astrophysics
With a hyperbolic trajectory around the Sun, `Oumuamua is the first confirmed interstellar object. However, its origin is poorly known. By simulating the orbits of 0.23 million local stars, we find 109 encounters with periastron less than 5 pc. `Oumuamua's low peculiar velocity is suggestive of its origin from a young stellar association with similar velocity. In particular, we find that `Oumuamua would have had slow encounters with at least five young stars belonging to the Local Association… 

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