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Table 2
Nucleus parameter properties for thermal modeling.
| Parameters | Symbols | Values | Sources |
|---|---|---|---|
| Emissivity | ε | 1 | |
| Specific heat capacity | c | 1000 J kg−1K−1 | |
| Bond albedo |  |
0.01 | Fornasier et al. (2015) |
| Mass density | ρ | 500 kg m−3 | Sierks et al. (2015) |
| Icy area fraction | f | 0 or 0.1 | |
| Thickness of the dust mantle | X | 5 or 6 mm | |
| Radius of the dust aggregate | ra | 0.5 or 5 mm | |
| Radius of dust monomer | rm | 1 μm | |
| Filling factor of the aggregate | ϕa | 0.4 | |
| Filling factor of the aggregate pack | ϕ0 | 0.6 | |
| Young’s modulus of the aggregate |  |
8.1 × 103 Pa | |
| Young’s modulus of the monomer |  |
5.5 × 1010 Pa | |
| Poisson ratio of the aggregate | μa | 0.17 | |
| Poisson ratio of the monomer | μm | 0.17 | Blum et al. (2017) |
| Coefficients of the Hertz factor | h1 | 5.18 × 10−2 | |
| h2 | 5.26 | ||
| Conductivity of the (solid) monomer | κm | 0.5 W m−1K−1 | |
| Specific surface energy of the monomer | γm | 0.01 J m−2 | |
| Sublimation coefficient | α0 | 0.146 | Gundlach et al. (2011) |
| α1 | 0.854 | ||
| α2 | 57.78 | ||
| α3 | 11580 K | ||
| Saturation pressure | p0 | 3.23 × 1012 Pa | |
| p1 | −6134.6 K | ||
| Permeability coefficient | ψ | 0.07 | |
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