The Excited Spin State of 1I/2017 U1 ‘Oumuamua

  title={The Excited Spin State of 1I/2017 U1 ‘Oumuamua},
  author={M. Belton and O. Hainaut and K. Meech and B. Mueller and J. Kleyna and H. Weaver and M. Buie and M. Drahus and P. Guzik and R. Wainscoat and W. Waniak and B. Handzlik and S. Kurowski and S. Xu and S. Sheppard and M. Micheli and H. Ebeling and J. Keane},
  journal={The Astrophysical Journal},
  • M. Belton, O. Hainaut, +15 authors J. Keane
  • Published 2018
  • Physics
  • The Astrophysical Journal
  • We show that `Oumuamua's excited spin could be in a high energy LAM state, which implies that its shape could be far from the highly elongated shape found in previous studies. CLEAN and ANOVA algorithms are used to analyze `Oumuamua's lightcurve using 818 observations over 29.3~days. Two fundamental periodicities are found at frequencies (2.77$\pm$0.11) and (6.42$\pm$0.18)~cycles/day, corresponding to (8.67$\pm$0.34)~h and (3.74$\pm$0.11)~h, respectively. The phased data show that the… CONTINUE READING
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