Kinematics of the Interstellar Vagabond 1I/‘Oumuamua (A/2017 U1)

@article{Mamajek2017KinematicsOT,
  title={Kinematics of the Interstellar Vagabond 1I/‘Oumuamua (A/2017 U1)},
  author={Eric E. Mamajek},
  journal={Research Notes of the AAS},
  year={2017},
  volume={1}
}
  • E. Mamajek
  • Published 31 October 2017
  • Physics, Geology
  • Research Notes of the AAS
The initial Galactic velocity vector for the recently discovered hyperbolic asteroid 1I/'Oumuamua (A/2017 U1) is calculated for before its encounter with our solar system. The latest orbit (JPL-13) shows that 'Oumuamua has eccentricity > 1 at 944\sigma\, significance (1.19936 +- 0.00021), i.e. clearly unbound. Assuming no non-gravitational forces, the object's inbound Galactic velocity was U, V, W = -11.457, -22.395, -7.746 (+-0.009, +-0.009, +-0.011) km/s (U towards Galactic center), with… 

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