TOI-237 Overview

TOI-237 0.21 R_⦿ 3535.21 K

TOI-237 c

0.108 R_Jup

TOI-237 b

0.128 R_Jup

Overview Parameters Nearby Data Bibliography 8 Legend Expand All

TOI-237 Architecture & Discovery Information

Name	Orbital Separation	Planet Size	Method	Year	Reference	Disposition
TOI-237
TOI-237 c	1.74 d	1.21 R_⨁	Transit	2026	Timmermans et al. 2026	Confirmed Planet
TOI-237 b	5.44 d	1.44 R_⨁	Transit	2020	Waalkes et al. 2021	Confirmed Planet

TOI-237 Stellar Parameters (5 Solutions)

RA: 23h32m58.45s

Dec: -29d24m59.35s

Distance: 38.0749+0.2292-0.2265
pc

Parallax: 26.236800±0.155995 mas

Ecliptic Latitude: -24.19609 deg

Ecliptic Longitude: 341.4984 deg

Galactic Latitude: -72.59431 deg

Galactic Longitude: 20.77828 deg

Total Proper Motion: 365.8325270±0.1486934 mas/yr

Proper Motion (RA): 151.04700±0.10832 mas/yr

Proper Motion (Dec): -333.194000±0.155699 mas/yr

Photometry: m_V
16.37±0.20; m_TESS
13.4102000±0.0074368; m_J
11.740±0.021; m_H
11.190±0.022; m_Ks
10.896±0.025; m_W1
10.732±0.023; m_W2
10.538±0.021; m_W3
10.389±0.071; m_W4
>9.187; m_Gaia
14.754000±0.000823; m_B
17.718±0.000

Tools: Planetary Systems; ExoFOP Target Overview Page; IRSA Finding Chart; TOI; Stellar Hosts

Source	Timmermans et al. 2026	Waalkes et al. 2021	TICv8	Gaia DR2	ExoFOP
T_eff (K)	3226+47-48	3212±100	3210.0±157.0	3535.2068+484.8632-239.2068	3139±98
L_✶ (log₁₀(L_⦿))	-2.4+0.0-0.0	-2.4+0.0-0.0	-2.3695+0.1001-0.1303	---	---
γ (km/s)	---	7.8±1.0	---	---	---
v sin i (km/s)	---	<6.4	---	---	---
Age (Gyr)	---	>4.5	---	---	---
ρ_✶ (g/cm³)	---	25.6+4.3-8.7	26.9426265±0.5161529	---	---
M_✶ (M_⦿)	0.1698+0.0385-0.0350	0.179±0.004	0.1802880±0.0201408	---	---
R_✶ (R_⦿)	0.2056+0.0047-0.0067	0.211±0.006	0.2112990±0.0065435	---	0.21129900217056272±0.00654350000000000
log g (log₁₀(cm/s²))	5.0494+0.0865-0.0923	5.04±0.07	5.0442400±0.0218134	---	5.049440±0.547167
Sp. T	---	M4.5 V	---	---	---
P_rot (days)	---	102±22	---	---	---
Metallicity (dex)	-0.3443+0.6245-0.3964 [Fe/H]	---	---	---	---

TOI-237 c Planetary Parameters (1 Solution)

Status: Confirmed Planet

Detected By: Transit

Tools: Planetary Systems; Transit Prediction Service; Transit

Source	Timmermans et al. 2026
T_eq (K)	515+11-8
b	0.25+0.12-0.14
S (S_⨁)	16.0±1.7
i (deg)	89.14+0.49-0.47
P (days)	1.74486147+0.00000130-0.00000100
R_p (R_⨁)	1.206±0.035
R_p (R_Jup)	0.1076±0.0031
R_p/R_✶	0.0526±0.0013
a (au)	0.0160+0.0005-0.0006
δ (%)	0.314+0.017-0.015
T₁₄ (hours)	0.827±0.010
T_C (days)	2459540.35059+0.00023-0.00024 (BJD-TDB)

TOI-237 b Planetary Parameters (4 Solutions)

Status: Confirmed Planet

Detected By: Transit

Tools: Planetary Systems; Transit Prediction Service; TOI; Transit

Source	Waalkes et al. 2021	Timmermans et al. 2026	Patel & Espinoza 2022	ExoFOP
a/R_✶	34.7±2.9	---	34.61+4.59-7.84	---
b	0.30+0.27-0.21	0.22+0.12-0.13	0.420+0.300-0.260	---
P (days)	5.436098±0.000039	5.43613914+0.00000280-0.00000290	5.4361470+0.0000180-0.0000170	5.436166729046963±0.000016691933000
R_p/R_✶	0.062±0.002	0.0601±0.0015	0.0665+0.0064-0.0052	---
T_C (days)	2458697.7197997+0.0007960-0.0008150 (BJD-TDB)	2458697.72080+0.00047-0.00045 (BJD-TDB)	2459110.86950+0.00180-0.00190 (BJD)	2458355.24175300±0.00231891 (BJD)
T_eq (K)	388	350+7-5	---	352.0718501624619
S (S_⨁)	3.7±0.5	3.4±0.4	---	3.631166907585703
R_p (R_⨁)	1.44±0.12	1.379±0.040	---	1.7175409297667155±0.2127978200000000
R_p (R_Jup)	0.128±0.011	0.1230±0.0036	---	0.15322900232727812±0.01898458260348329
δ (%)	0.38	0.412+0.020-0.021	---	0.479712884822235±0.073569073000000
T₁₄ (hours)	---	1.213+0.015-0.014	---	1.541967345155758±0.244813760000000
e	0	---	---	---
i (deg)	89.5+0.4-0.6	89.63±0.22	---	---
a (au)	0.0341±0.0010	0.0346+0.0010-0.0013	---	---

Nearby Data (within 30 arcseconds) Browse Nearby Data

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Known Objects: 2 Confirmed Planets; 1 2MASS Point Source Catalog

Data Files: 1 SuperWASP Time Series; 2 Associated Literature Data

Bibliography (8 References)

Hidden Gems in TESS: SHERLOCK finds two new rocky planets around nearby M dwarfs
Timmermans et al. 2026 Reference Overview
Empirical Limb-darkening Coefficients and Transit Parameters of Known Exoplanets from TESS
Patel & Espinoza 2022 Reference Overview
TOI 122b and TOI 237b: Two Small Warm Planets Orbiting Inactive M Dwarfs Found by TESS
Waalkes et al. 2021 Reference Overview
The Revised TESS Input Catalog and Candidate Target List
TICv8 Reference Overview
Gaia Data Release 2
Gaia DR2 Reference Overview
ExoFOP TOI Table
ExoFOP
All WISE Data Release
Cutri et al. 2014 Reference Overview
2MASS All-Sky Catalog of Point Sources
2MASS Point Source Catalog Reference Overview

System
Star
Confirmed
Candidate
False Positive Planet
Controversial
False Positive

Aliases
Data Access
Transit Prediction Service
Time Series
Kepler | K2

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