The mass, orbit, and tidal evolution of the Quaoar–Weywot system

  title={The mass, orbit, and tidal evolution of the Quaoar–Weywot system},
  author={Wesley C. Fraser and Konstantin Batygin and Michael E. Brown and Antonin H. Bouchez},
Here we present new adaptive optics observations of the Quaoar–Weywot system. With these new observations we determine an improved system orbit. Due to a 0.39 day alias that exists in available observations, four possible orbital solutions are available with periods of ∼11.6, ∼12.0, ∼12.4, and ∼12.8 days. From the possible orbital solutions, system masses of 1.3–1.5 ± 0.1 × 10^(21) kg are found. These observations provide an updated density for Quaoar of 2.7–5.0 g cm^(−3). In all cases, Weywot… Expand

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