Eclipsing binary Trojan asteroid Patroclus: Thermal inertia from Spitzer observations

  title={Eclipsing binary Trojan asteroid Patroclus: Thermal inertia from Spitzer observations},
  author={Michael Mueller and Franck Marchis and Joshua P. Emery and Alan W. Harris and Stefano Mottola and Daniel Hestroffer and J. Berthier and Mario di Martino},
We present mid-infrared (8-33 micron) observations of the binary L5-Trojan system (617) Patroclus-Menoetius before, during, and after two shadowing events, using the Infrared Spectrograph (IRS) on board the Spitzer Space Telescope.F or the first time, we effectively observe changes in asteroid surface temperature in real time, allowing the thermal inertia to be determined very directly. A new detailed binary thermophysical model is presented which accounts for the system's known mutual orbit… Expand

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