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Table 1

Thermal parameter for three typical materials on asteroids, taken from Farinella et al. (1998).

ρ (kg m−3) K (Wm−1 K−1) C (J kg−1 K−1)
Regolith 1500 0.0015 680
Solid basalt 3500 2.65 680
Solid iron 8000 40 500

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