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

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Table 1

Main identifiers, equatorial coordinates, parallax, distance, optical and near-infrared magnitudes, and fundamental parameters of the star TOI-282.


Main identifiers	TOI-282
	TIC 178155732
	HD 28109
	HIP 20295
	Gaia DR3 4668163021600295552

Parameter	Value	Source

RA (Ep=2016.0)	04^h20^m57.20^s	Gaia DR3
Dec. (Ep=2016.0)	−68° 06′ 09.68″	Gaia DR3
B	9.91 ± 0.03	CDS Simbad
V	9.38 ± 0.02	CDS Simbad
B_T	10.021 ± 0.026	Høg et al. (2000)
V_T	9.438 ± 0.021	Høg et al. (2000)
J	8.476 ± 0.020	Cutri et al. (2003)
H	8.256 ± 0.024	Cutri et al. (2003)
Ks	8.175 ± 0.023	Cutri et al. (2003)
G	9.3063 ± 0.0028	Gaia DR3
G_RP	9.5625 ± 0.0028	Gaia DR3
G_BP	8.8875 ± 0.0038	Gaia DR3
Parallax ϖ [mas]	7.1364 ± 0.0098	Gaia DR3^(a)
Distance (pc)	140.13 ± 0.19	Gaia DR3^(a)

T_eff (K)	6189 ± 55	Spectroscopy
[Fe/H]	0.10 ± 0.03	Spectroscopy
log g_⋆ (cgs)	4.25 ± 0.07	Spectroscopy
v sin i_⋆ (km s⁻¹)	8.0 ± 0.5	Spectroscopy
L_⋆ (L_⊙)	${2.71}_{- 0.14}^{+ 0.16}$ $\[2.71_{-0.14}^{+0.16}\]$	ϖ & Photometry
R_⋆ (R_⊙)	${1.425}_{- 0.041}^{+ 0.048}$ $\[1.425_{-0.041}^{+0.048}\]$	ϖ & Photometry^(b)
M_⋆ (M_⊙)	1.227 ± 0.052	Isochrones
t_⋆ (Gyr)	3.2 ± 0.9	Isochrones
log $R_{H K}^{'}$ $\[\mathrm{R}_{\mathrm{HK}}^{\prime}\]$	−4.991 ± 0.003	Spectroscopy

Notes. Values in the bottom part of the table were derived in this work. ^(a)Zero-point correction from Lindegren et al. (2021) applied. ^(b)The role of PARSEC isochrones for the R_⋆ estimate is to transform absolute magnitudes into luminosity via bolometric correction tables provided with the evolutionary grids (Marigo et al. 2017).

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