Thermal Properties of Centaurs Asbolus and Chiron

  title={Thermal Properties of Centaurs Asbolus and Chiron},
  author={Yan R. Fern{\'a}ndez and David C. Jewitt and Scott S. Sheppard},
  journal={The Astronomical Journal},
We have measured the mid-infrared thermal continua from two Centaurs, inactive (8405) Asbolus and active 95P = (2060) Chiron, and have constrained their geometric albedos, p, and effective radii, R, with the standard thermal model for slow rotators. These are the first such measurements of Asbolus; we find R = 33 ± 2 km and p = 0.12 ± 0.03. This albedo is higher than all of those confidently known for active cometary nuclei. The thermal inertia is comparable to or lower than those of main-belt… 

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