TOI-2015 b: A sub-Neptune in strong gravitational interaction with an outer non-transiting planet

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Table E.1

Physical parameters of the TOI-2015 system for the 2:1 near-resonance scenario.

Parameter	Unit	TOI-2015 b	TOI-2015 c
Orbital period P	days	${3.34649323}_{- 0.00004738}^{+ 0.00004513}$ $\[3.34649323_{-0.00004738}^{+0.00004513}\]$	${6.698178}_{- 0.000131}^{+ 0.000195}$ $\[6.698178_{-0.000131}^{+0.000195}\]$
Transit-timing T₀	BJD_TDB	${2459424.78461920}_{- 0.00018066}^{+ 0.00019598}$ $\[2459424.78461920_{-0.00018066}^{+0.00019598}\]$	−
Orbital semi-major axis a	au	0.02931232 ± 0.000003	0.046559 ± 0.000005
Impact parameter b	R_⋆	${0.841}_{- 0.004}^{+ 0.004}$ $\[0.841_{-0.004}^{+0.004}\]$	${30.31}_{- 0.14}^{+ 0.09}$ $\[30.31_{-0.14}^{+0.09}\]$
Transit duration W	hour	1.118 ± 0.007	−
eccentricity e	−	${0.1777}_{- 0.0087}^{+ 0.0084}$ $\[0.1777_{-0.0087}^{+0.0084}\]$	${0.0099}_{- 0.0033}^{+ 0.0044}$ $\[0.0099_{-0.0033}^{+0.0044}\]$
$\sqrt{e} \cos (w)$ $\[\sqrt{e} \cos (w)\]$	−	$- {0.4136}_{- 0.0105}^{+ 0.0111}$ $\[-0.4136_{-0.0105}^{+0.0111}\]$	${0.0111}_{- 0.0024}^{+ 0.0021}$ $\[0.0111_{-0.0024}^{+0.0021}\]$
$\sqrt{e} \sin (w)$ $\[\sqrt{e} \sin (w)\]$	−	${0.0816}_{- 0.0092}^{+ 0.0087}$ $\[0.0816_{-0.0092}^{+0.0087}\]$	$- {0.099}_{- 0.0202}^{+ 0.0183}$ $\[-0.099_{-0.0202}^{+0.0183}\]$
Mean anomaly M	deg	−	${6.246}_{- 0.020}^{+ 0.022}$ $\[6.246_{-0.020}^{+0.022}\]$
Orbital inclination i	deg	87.87 ± 0.01	${28.44}_{- 2.00}^{+ 3.03}$ $\[28.44_{-2.00}^{+3.03}\]$
Radius ratio R_p/R_⋆	R_⋆	${0.09849}_{- 0.00042}^{+ 0.00045}$ $\[0.09849_{-0.00042}^{+0.00045}\]$	−
Scaled semi-major axis a/R_⋆		${19.2758}_{- 0.0056}^{+ 0.0064}$ $\[19.2758_{-0.0056}^{+0.0064}\]$	30.6220 ± 0.0102
Planet radius R_p	R_⊕	${3.5119}_{- 0.015}^{+ 0.016}$ $\[3.5119_{-0.015}^{+0.016}\]$	−
Planet Mass M_p	M_⊕	${8.032}_{- 0.44}^{+ 0.67}$ $\[8.032_{-0.44}^{+0.67}\]$	${18.11}_{- 1.08}^{+ 1.05}$ $\[18.11_{-1.08}^{+1.05}\]$
Planet density ρ_p	g/cm³	${1.022}_{- 0.064}^{+ 0.077}$ $\[1.022_{-0.064}^{+0.077}\]$	−
Planet irradiation S _p	S_⊕	13.19 ± 0.38	5.23 ± 0.15
Planet surface gravity log(g_p)	−	2.81 ± 0.21	−

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