Interstellar Interloper 1I/2017 U1: Observations from the NOT and WIYN Telescopes

@article{Jewitt2017InterstellarI1,
  title={Interstellar Interloper 1I/2017 U1: Observations from the NOT and WIYN Telescopes},
  author={D. Jewitt and J. Luu and J. Rajagopal and R. Kotulla and S. Ridgway and W. Liu and T. Augusteijn},
  journal={The Astrophysical Journal},
  year={2017},
  volume={850}
}
  • D. Jewitt, J. Luu, +4 authors T. Augusteijn
  • Published 2017
  • Physics
  • The Astrophysical Journal
  • We present observations of the interstellar interloper 1I/2017 U1 ('Oumuamua) taken during its 2017 October flyby of Earth. The optical colors B – V = 0.70 ± 0.06, V – R = 0.45 ± 0.05, overlap those of the D-type Jovian Trojan asteroids and are incompatible with the ultrared objects that are abundant in the Kuiper Belt. With a mean absolute magnitude H V = 22.95 and assuming a geometric albedo p V = 0.1, we find an average radius of 55 m. No coma is apparent; we deduce a limit to the dust mass… CONTINUE READING

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