Two warm Earth-sized exoplanets and an Earth-sized candidate in the M5V-M6V binary system TOI-2267

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Volume 702 (October 2025)

A&A, 702 (2025) A85

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Table H.2

Parameters for the TOI-2267.02 candidate.

Parameter	Unit	Primary host	Secondary host

Fitted Parameters		TOI-2267 d / TOI-2267.02
R_p/R_⋆		${0.0422}_{- 0.0025}^{+ 0.0028}$ $\[0.0422_{-0.0025}^{+0.0028}\]$	${0.0799}_{- 0.0093}^{+ 0.010}$ $\[0.0799_{-0.0093}^{+0.010}\]$
(R_⋆ + R_p)/a_p		${0.0486}_{- 0.0072}^{+ 0.018}$ $\[0.0486_{-0.0072}^{+0.018}\]$	${0.0501}_{- 0.0062}^{+ 0.016}$ $\[0.0501_{-0.0062}^{+0.016}\]$
cos i_p		$- {0.006}_{- 0.038}^{+ 0.033}$ $\[-0.006_{-0.038}^{+0.033}\]$	${0.012}_{- 0.028}^{+ 0.031}$ $\[0.012_{-0.028}^{+0.031}\]$
Orbital period, P	days	${2.0344678}_{- 0.0000023}^{+ 0.0000020}$ $\[2.0344678_{-0.0000023}^{+0.0000020}\]$	2.0344671 ± 0.0000023
Mid-transit time, T₀	BJD_TDB-2457000	1817.0810 ± 0.0014	${1817.0813}_{- 0.0015}^{+ 0.0014}$ $\[1817.0813_{-0.0015}^{+0.0014}\]$
Dilution factor TESS, D_0;TESS		0.288 ± 0.049	${0.806}_{- 0.045}^{+ 0.040}$ $\[0.806_{-0.045}^{+0.040}\]$
GP hyper-parameter, ln S_0;TESS	rel. flux	−15.220 ± 0.047	$- {15.227}_{- 0.045}^{+ 0.048}$ $\[-15.227_{-0.045}^{+0.048}\]$
GP hyper-parameter, ln Q_;TESS	rel. flux	0.818 ± 0.053	0.817 ± 0.052
GP hyper-parameter, ln ω_0;TESS	rel. flux	${2.4434}_{- 0.0097}^{+ 0.0092}$ $\[2.4434_{-0.0097}^{+0.0092}\]$	2.444 ± 0.010

Derived Parameters

Planet Radius, R_p	R_⊕	0.95 ± 0.12	${1.13}_{- 0.28}^{+ 0.31}$ $\[1.13_{-0.28}^{+0.31}\]$
Semimajor axis, a	AU	${0.0203}_{- 0.0053}^{+ 0.0046}$ $\[0.0203_{-0.0053}^{+0.0046}\]$	${0.0124}_{- 0.0035}^{+ 0.0040}$ $\[0.0124_{-0.0035}^{+0.0040}\]$
Inclination, i	°	${90.3}_{- 1.9}^{+ 2.2}$ $\[90.3_{-1.9}^{+2.2}\]$	${89.3}_{- 1.8}^{+ 1.6}$ $\[89.3_{-1.8}^{+1.6}\]$
Transit duration, T_1–4	hrs	${0.654}_{- 0.036}^{+ 0.051}$ $\[0.654_{-0.036}^{+0.051}\]$	${0.708}_{- 0.048}^{+ 0.060}$ $\[0.708_{-0.048}^{+0.060}\]$
Impact parameter, b		$- {0.15}_{- 0.59}^{+ 0.72}$ $\[-0.15_{-0.59}^{+0.72}\]$	${0.29}_{- 0.65}^{+ 0.44}$ $\[0.29_{-0.65}^{+0.44}\]$
^a Equilibrium Temperature, T_eq	K	$424_{- 35}^{+ 70}$ $\[424_{-35}^{+70}\]$	$412_{- 36}^{+ 58}$ $\[412_{-36}^{+58}\]$
Insolation Flux, S	S_⊕	${8.6}_{- 3.3}^{+ 6.4}$ $\[8.6_{-3.3}^{+6.4}\]$	${7.6}_{- 4.1}^{+ 10.5}$ $\[7.6_{-4.1}^{+10.5}\]$
Transit Depth (TESS, undiluted), δ	ppt	${1.95}_{- 0.20}^{+ 0.22}$ $\[1.95_{-0.20}^{+0.22}\]$	${7.1}_{- 1.4}^{+ 2.0}$ $\[7.1_{-1.4}^{+2.0}\]$
Transit Depth (TESS, diluted), δ	ppt	1.39 ± 0.12	${1.37}_{- 0.11}^{+ 0.12}$ $\[1.37_{-0.11}^{+0.12}\]$
Host density from orbit, ρ_⋆	g cm⁻³	45 ± 28	$46_{- 25}^{+ 22}$ $\[46_{-25}^{+22}\]$

Notes. ^a Values derived assuming an albedo of 0.3 (Earth-like) and emissivity of 1.

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