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Table 1

Adopted planetary characteristics of TRAPPIST-1 planets for climate simulations.

Parameter Tb Tc Td Te Tf Tg Th Unit
Rp 1.09a 1.06a 0.77a 0.92a 1.05a 1.13a 0.75b R
Mp 0.85a 1.38a 0.41a 0.62a 0.68a 1.34a 0.38 (arb.) M
gp 7.07 12.14 6.75 7.22 6.11 10.34 6.6 (arb.) m s−2
Semi-major axis 0.011a 0.015a 0.021a 0.028a 0.037a 0.045a 0.060b au
Sp 4.25a 2.27a 1.143a 0.662a 0.382a 0.258a 0.165b S
Sp 5806 3101 1561 904 522 352 225 W m−2
Spin-orbit resonance 1:1
Period 1.51a 2.42a 4.05a 6.10a 9.21a 12.35a 18.76b Earth days
Ωp 4.82 3.00 1.80 1.19 0.790 0.589 0.388 10−5 rad s−1
Obliquity 0 °
Eccentricity 0

Notes. Most of the values derive from Gillon et al. (2017)(a) and Luger et al. (2017)(b). Note that mass estimates are all compatible (at less than 1σ) with the TTV analysis of Wang et al. (2017) that included both Spitzer (Gillon et al. 2017) and K2 (Luger et al. 2017) transits.

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