GJ 238 Overview

GJ 238 0.49 R_⦿ 3433.00 K

GJ 238 b

0.050 R_Jup

Overview Parameters Ancillary 1 Nearby Data Bibliography 9 Legend Expand All

GJ 238 Architecture & Discovery Information

Name	Orbital Separation	Planet Size	Method	Year	Reference	Disposition
GJ 238
GJ 238 b	1.74 d	0.57 R_⨁	Transit	2024	Tey et al. 2024	Confirmed Planet

GJ 238 Stellar Parameters (5 Solutions)

RA: 06h33m49.17s

Dec: -58d31m30.11s

Distance: 15.2142+0.0071-0.0072
pc

Parallax: 65.6992000±0.0305741 mas

Ecliptic Latitude: -81.08673 deg

Ecliptic Longitude: 119.69723 deg

Galactic Latitude: -25.12418 deg

Galactic Longitude: 267.83346 deg

Total Proper Motion: 892.6796479±0.0682143 mas/yr

Proper Motion (RA): -404.3510000±0.0689181 mas/yr

Proper Motion (Dec): 795.8500000±0.0680314 mas/yr

Photometry: m_V
11.62±0.10; m_TESS
9.3685400±0.0073252; m_J
7.898±0.023; m_H
7.312±0.034; m_Ks
7.030±0.023; m_Ic
9.200±0.010; m_Gaia
10.529400±0.000463; m_B
12.872±0.289

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

Source	Tey et al. 2024	TICv8	Turnbull 2015	Hawley et al. 1996	ExoFOP
T_eff (K)	3485±140	3470.0±157.0	3433	---	3445±87
L_✶ (log₁₀(L_⦿))	-1.62+0.05-0.05	-1.62379+0.09418-0.12043	-1.523 +0.699-0.477	---	---
M_✶ (M_⦿)	0.4193+0.0095-0.0098	0.4212380±0.0203412	0.41	---	---
R_✶ (R_⦿)	0.4314+0.0075-0.0071	0.4266760±0.0127833	0.49	---	0.4266760±0.0127833
Sp. T	M2.5 V	---	M	M2.5	---
log g (log₁₀(cm/s²))	---	4.8024000±0.0050429	---	---	4.852430±0.061474
ρ_✶ (g/cm³)	---	7.645375±0.318050	---	---	---
Metallicity (dex)	0.15±0.10 [Fe/H]	---	---	---	---
P_rot (days)	44±2	---	---	---	---

GJ 238 b Planetary Parameters (2 Solutions)

Status: Confirmed Planet

Detected By: Transit

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

Source	Tey et al. 2024	ExoFOP
T_eq (K)	758+16-15	1084.286152090791
b	0.202+0.075-0.072	---
i (deg)	89.99+0.80-0.79	---
P (days)	1.7446999+0.0000019-0.0000018	1.7446983660002617±0.0000015804035490
R_p (R_⨁)	0.566±0.014	0.56285138046995642±0.03295242469940986
R_p (R_Jup)	0.0505±0.0012	0.050214323276509563±0.002939823484521645
R_p/R_✶	0.01204±0.00023	---
a (au)	0.02123+0.00016-0.00017	---
T₁₄ (hours)	1.239±0.018	1.0880844531619160±0.3597863291828315
T_C (days)	2458326.98222+0.00064-0.00070 (BJD)	2460985.9035510002±0.0015120713 (BJD)
S (S_⨁)	---	229.45793769334028
δ (%)	---	0.0160464265640231±0.0008427084121982

Ancillary Information (1 Unique File)

+ GJ 238 (1 File Type, 1 File)

Literature Time Series (1 File Type, 1 File)

File Type	Data Points	Filter	Reference
Photometric Light Curve	106	Hp (Hipparcos)	Hipparcos and Tycho Catalogs

Nearby Data (within 30 arcseconds) Browse Nearby Data

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

Data Files: 4 KELT Time Series; 1 Associated Literature Data

Bibliography (9 References)

GJ 238 b: A 0.57 Earth Radius Planet Orbiting an M2.5 Dwarf Star at 15.2 pc
Tey et al. 2024 Reference Overview
The Revised TESS Input Catalog and Candidate Target List
TICv8 Reference Overview
ExoFOP TOI Table
ExoFOP
ExoCat-1: The Nearby Stellar Systems Catalog for Exoplanet Imaging Missions
Turnbull 2015 Reference Overview
2MASS All-Sky Catalog of Point Sources
2MASS Point Source Catalog Reference Overview
Revised Coordinates and Proper Motions of the Stars in the Luyten Half-Second Catalog
Bakos et al. 2002 Reference Overview
The Hipparcos and Tycho Catalogs
Hipparcos and Tycho Catalogs Reference Overview
The Palomar/MSU nearby star spectroscopic survey. II. The southern M dwarfs and investigations of magnetic activity.
Hawley et al. 1996 Reference Overview
UBV(RI)_c photometry of faint nearby stars
Laing 1989 Reference Overview

Legend

System
Star
Confirmed
Candidate
False Positive Planet
Controversial
False Positive

Aliases
Data Access
Transit Prediction Service
Time Series
Kepler | K2

External Link
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Debug Info

https://vmexoweb2.ipac.caltech.edu/data/Overviews_2.0/4/GJ_238.json

GJ 238

Catalog Parameters

06h33m49.17s

Dec

dec

-58d31m30.11s

elat

-81.08673

elon

119.69723

glat

-25.12418

glon

267.83346

m_V

sy_vmag

11.62±0.10

m_TESS

sy_tmag

9.3685400±0.0073252

m_J

sy_jmag

7.898±0.023

m_H

sy_hmag

7.312±0.034

m_Ks

sy_kmag

7.030±0.023

sy_kepmag

no_data

sy_w1mag

no_data

sy_w2mag

no_data

sy_w3mag

no_data

sy_w4mag

no_data

m_Ic

sy_icmag

9.200±0.010

m_Gaia

sy_gaiamag

10.529400±0.000463

m_B

sy_bmag

12.872±0.289

sy_gmag

no_data

sy_imag

no_data

sy_rmag

no_data

sy_umag

no_data

sy_zmag

no_data

sy_pm

892.6796479±0.0682143

μ_δ

sy_pmdec

795.8500000±0.0680314

μ_α

sy_pmra

-404.3510000±0.0689181

sy_plx

65.6992000±0.0305741

Distance

sy_dist

15.2142+0.0071-0.0072

Set Parameters

R_✶

st_rad

0.49

T_eff

st_teff

3433