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Table 2

Parameters used to determine the similarity criterion given by Eqs. (11)–(13) that shows how similar a synthetic system is to the observed Trappist-1 planetary system.

Parameter Trappist-1
Mean mass 0.8079 M
Variance mass 0.362 M
Total mass 5.655 M
Mean period ratio 1.5226
Variance period ratio 0.1117
Mean eccentricity 0.0063
Variance eccentricity 0.0025
dMp∕dP −0.0206 M∕d
σ(MpMcp) 0.3393 M

Notes. The values for Trappist-1 are taken from Grimm et al. (2018).

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