Mass determination of the three long-period Neptune- and sub-Neptune-sized planets transiting TOI-282

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Table B.7

Posteriors and derived orbital parameters (MAP and HDI) for TOI-282 b, c, and d obtained from the dynamical analysis with TRADES


Parameter	Unit	Prior	MAP (HDI ± 1σ)
TOI-282 b
Orbital Period (P)	[days]	𝒰(21.5, 23.5)	${22.89076}_{- 0.00015}^{+ 0.00017}$ $\[22.89076_{-0.00015}^{+0.00017}\]$
Mass (m_p)	[M_⊕]	−	${6.7}_{- 0.8}^{+ 1.7}$ $\[6.7_{-0.8}^{+1.7}\]$
Eccentricity (e)	−	−	${0.0071}_{- 0.0071}^{+ 0.0475}$ $\[0.0071_{-0.0071}^{+0.0475}\]$
Argument of Periastron (ω)	[deg]	−	$- 93_{- 54}^{+ 54}$ $\[-93_{-54}^{+54}\]$
Mean Longitude (λ)	[deg]	𝒰(0, 360)	$147_{- 5}^{+ 1}$ $\[147_{-5}^{+1}\]$
Mean Anomaly (M_A)	[deg]	−	$60_{- 90}^{+ 90}$ $\[60_{-90}^{+90}\]$
TOI-282 c
Orbital Period (P)	[days]	𝒰(54.5, 57.5)	${56.00633}_{- 0.00083}^{+ 0.00166}$ $\[56.00633_{-0.00083}^{+0.00166}\]$
Mass (m_p)	[M_⊕]	−	${10.0}_{- 2.0}^{+ 1.0}$ $\[10.0_{-2.0}^{+1.0}\]$
Eccentricity (e)	−	−	${0.0039}_{- 0.0037}^{+ 0.0041}$ $\[0.0039_{-0.0037}^{+0.0041}\]$
Argument of Periastron (ω)	[deg]	−	$39_{- 6}^{+ 73}$ $\[39_{-6}^{+73}\]$
Mean Longitude (λ)	[deg]	𝒰(0, 360)	${268.31}_{- 0.15}^{+ 0.51}$ $\[268.31_{-0.15}^{+0.51}\]$
Mean Anomaly (M_A)	[deg]	−	$50_{- 72}^{+ 7}$ $\[50_{-72}^{+7}\]$
TOI-282 d
Orbital Period (P)	[days]	𝒰(83, 87)	${84.2721}_{- 0.0053}^{+ 0.0039}$ $\[84.2721_{-0.0053}^{+0.0039}\]$
Mass (m_p)	[M_⊕]	−	${5.8}_{- 1.1}^{+ 0.9}$ $\[5.8_{-1.1}^{+0.9}\]$
Eccentricity (e)	−	−	${0.0054}_{- 0.0036}^{+ 0.0027}$ $\[0.0054_{-0.0036}^{+0.0027}\]$
Argument of Periastron (ω)	[deg]	−	$- 72_{- 27}^{+ 42}$ $\[-72_{-27}^{+42}\]$
Mean Longitude (λ)	[deg]	𝒰(0, 360)	${190.04}_{- 0.30}^{+ 0.23}$ $\[190.04_{-0.30}^{+0.23}\]$
Mean Anomaly (M_A)	[deg]	−	$82_{- 43}^{+ 27}$ $\[82_{-43}^{+27}\]$

Notes. The symbols 𝒰, 𝒢, and 𝒩⁺ refer to uniform, Gaussian, and half-Gaussian distributions, respectively.

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