GJ 1132

Name	Orbital Separation	Planet Size	Method	Year	Reference	Disposition
GJ 1132
GJ 1132 b	1.63 d	1.19 R_⨁	Transit	2015	Berta-Thompson et al. 2015	Confirmed Planet
GJ 1132 c	8.93 d	> 2.91 M_⨁	Radial Velocity	2018	Bonfils et al. 2018	Confirmed Planet

Exoplanet Archive Notes (3)

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GJ 1132 b

Equilibrium temperature value was assuming Bond albedo of 0.75. (Berta-Thompson et al. 2015)
Equilibrium temperature was calculated assuming a Bond albedo of 0.3. (Bonfils et al. 2018)

GJ 1132 c

Equilibrium temperature was calculated assuming a Bond albedo of 0.3. (Bonfils et al. 2018)

GJ 1132 Stellar Parameters (11 Solutions)

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RA: 10h14m50.18s

Dec: -47d09m17.77s

Distance: 12.613±0.007 pc

Parallax: 79.2543000±0.0437672 mas

Ecliptic Latitude: -52.42012 deg

Ecliptic Longitude: 181.43393 deg

Galactic Latitude: 7.75911 deg

Galactic Longitude: 277.25461 deg

Total Proper Motion: 1132.4832583±0.0750929 mas/yr

Proper Motion (RA): -1053.9800000±0.0738738 mas/yr

Proper Motion (Dec): 414.3000000±0.0825484 mas/yr

Photometry: m_V
13.68±0.20; m_TESS
10.8372000±0.0073203; m_J
9.245±0.026; m_H
8.666±0.031; m_Ks
8.322±0.027; m_W1
8.170±0.023; m_W2
8.000±0.020; m_W3
7.862±0.018; m_W4
7.916±0.184; m_Ic
10.69±0.02; m_Gaia
12.138000±0.000387; m_B
15.17±0.03

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

Source	Weisserman et al. 2026	Xue et al. 2024	Maxted et al. 2022	TICv8	Bonfils et al. 2018	Gaia DR2	Southworth et al. 2017	Cloutier et al. 2017	Berta-Thompson et al. 2015	Hawley et al. 1996	ExoFOP
T_eff (K)	---	3229+78-62	3090±65	3261.0±157.0	3270±140	3631.1074+250.2460-281.4410	---	---	3270±140	---	3202
L_✶ (log₁₀(L_⦿))	---	-2.32+0.03-0.02	---	-2.2821+0.0989-0.1282	-2.36+0.03-0.04	---	---	---	-2.36+0.03-0.04	---	---
Metallicity (dex)	-0.18±0.15 [Fe/H]	-0.17±0.15 [Fe/H]	-0.31±0.10 [Fe/H]	---	---	---	---	---	-0.12±0.15 [Fe/H]	---	---
γ (km/s)	---	---	---	---	35.0788±0.0008	---	---	---	35±1	---	---
v sin i (km/s)	---	---	---	---	---	---	---	---	<2	---	---
Age (Gyr)	---	---	---	---	---	---	---	---	>5	---	---
ρ_✶ (g/cm³)	---	25.3+3.1-2.2	---	23.7846156±0.2576782	---	---	15.4+4.8-3.4	---	29.6±6.0	---	---
M_✶ (M_⦿)	0.198±0.005	0.1945+0.0048-0.0046	0.192±0.022	0.1957940±0.0201573	0.181±0.019	---	0.181±0.019	---	0.181±0.019	---	---
R_✶ (R_⦿)	0.226±0.007	0.2211+0.0069-0.0081	0.207±0.016	0.2264070±0.0069743	0.2105+0.0102-0.0085	---	0.255±0.023	---	0.207±0.016	---	0.226407006382942±0.006974270000000
Sp. T	M4.5 V	---	---	---	---	---	---	---	M4.5 V	M3.5	---
P_rot (days)	---	---	---	---	122.3+6.0-5.0	---	---	122.31+6.03-5.04	---	---	---
log g (log₁₀(cm/s²))	5.02±0.03	5.037+0.034-0.026	5.07±0.06	5.0200900±0.0181057	---	---	4.881±0.074	---	---	---	4.86375

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GJ 1132 b Planetary Parameters (9 Solutions)

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Status: Confirmed Planet

Detected By: Radial Velocity, Transit

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

Source	Xue et al. 2024	Weisserman et al. 2026	Kokori et al. 2023	Maxted et al. 2022	Bonfils et al. 2018	Southworth et al. 2017	Cloutier et al. 2017	Berta-Thompson et al. 2015	ExoFOP
T_eq (K)	583.8+11.0-8.5	591±11	---	---	529±9	644±38	---	409±11	545.712674611976
M_p (M_⨁)	1.84+0.19-0.19	1.69±0.15	---	1.74±0.25	1.66±0.23	1.63±0.54	1.58+0.49-0.48	1.62±0.55	---
M_p (M_Jup)	0.00578+0.00060-0.00059	0.00532±0.00047	---	0.00547±0.00079	0.00522±0.00072	0.00513±0.00170	0.00497+0.00154-0.00151	0.00510±0.00173	---
i (deg)	88.16+0.19-0.18	---	88.6±0.5	88.50±0.66	---	86.58±0.63	---	---	---
P (days)	1.62892911+0.00000029-0.00000030	1.62893±0.00001	1.6289304±0.0000013	1.6289287	1.628931±0.000027	1.6289287±0.0000018	---	1.628930±0.000031	1.6289321997705±0.0000037834750
ρ (g/cm³)	5.97+0.96-0.79	---	---	7.0±1.9	6.3±1.3	3.1+1.7-1.2	---	6.0±2.5	---
R_p (R_⨁)	1.192+0.038-0.045	1.22±0.04	---	1.11±0.10	1.130±0.056	1.43±0.16	---	1.16±0.11	1.21456642396614±0.15818869000000
R_p (R_Jup)	0.1063+0.0034-0.0040	0.109±0.004	---	0.0990±0.0089	0.1008±0.0050	0.128±0.014	---	0.103±0.010	0.108356545208981±0.014112673956161
R_p/R_✶	0.04943±0.00015	---	0.051±0.003	0.0494±0.0021	---	0.05041±0.00086	---	0.0512±0.0025	---
a (au)	0.01570±0.00013	---	---	---	0.0153±0.0005	0.01533±0.00053	---	---	---
T_C (days)	2459280.98988±0.00013 (BJD-TDB)	2457184.5579±0.0003 (BJD)	2458031.60114±0.00011 (BJD-TDB)	2458938.91419±0.00044 (BJD-TDB)	---	2457184.55759±0.00030 (BJD-TDB)	---	2457184.55786±0.00032 (BJD-TDB)	2459280.9894040±0.0008845 (BJD)
a/R_✶	15.26+0.59-0.45	---	16.0±1.1	16.3±1.1	---	---	---	16.0±1.1	---
b	0.504+0.032-0.038	---	---	0.43±0.16	---	---	---	0.38±0.14	---
K (m/s)	2.98±0.30	2.75±0.24	---	2.85±0.34	2.85±0.34	---	2.69+0.81-0.79	2.76±0.92	---
S (S_⨁)	19.3+1.5-1.1	---	---	---	---	---	---	---	20.9593188562353
δ (%)	0.2443+0.0014-0.0015	---	---	---	---	---	---	---	0.251211924470605±0.009733358000000
T₁₄ (hours)	0.76646+0.00214-0.00216	---	---	---	---	---	---	---	0.809275952968085±0.096365620000000
M_p sin i (M_⨁)	1.84+0.19-0.19	---	---	---	1.66±0.23	---	---	---	---
M_p sin i (M_Jup)	0.00578+0.00060-0.00059	---	---	---	0.00522±0.00072	---	---	---	---
e	0.0118+0.0470-0.0099	0	---	---	<0.22	---	---	0	---
T_p (days)	2459280.149+0.025-0.600 (BJD-TDB)	---	---	---	---	---	---	---	---
ω (deg)	-95.80+5.50-130.00	---	---	---	---	---	---	---	---

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GJ 1132 c Planetary Parameters (2 Solutions)

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Status: Confirmed Planet

Detected By: Radial Velocity

Tools: Planetary Systems

Source	Weisserman et al. 2026	Bonfils et al. 2018
T_eq (K)	---	300±5
M_p sin i (M_⨁)	2.91±0.27	2.64±0.44
M_p sin i (M_Jup)	0.00916±0.00085	0.00831±0.00138
e	<0.19	<0.27
P (days)	8.9290±0.0008	8.929±0.010
K (m/s)	2.69±0.25	2.57±0.39
a (au)	---	0.0476±0.0017
T_C (days)	2457505.94±0.15 (BJD)	---

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Nearby Data (within 30 arcseconds) Browse Nearby Data

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

Data Files: 2 Associated Literature Data

Bibliography (21 References)

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Super-Earth masses and stellar abundances from NIRPS reveal tentative evidence for water-rich formation around M dwarfs
Weisserman et al. 2026 Reference Overview
Additional JWST/NIRSpec Transits of the Rocky M Dwarf Exoplanet GJ 1132 b Reveal a Featureless Spectrum
Bennett et al. 2025 Reference Overview
JWST Thermal Emission of the Terrestrial Exoplanet GJ 1132b
Xue et al. 2024 Reference Overview
Double Trouble: Two Transits of the Super-Earth GJ 1132 b Observed with JWST NIRSpec G395H
May et al. 2023 Reference Overview
ExoClock Project. III. 450 New Exoplanet Ephemerides from Ground and Space Observations
Kokori et al. 2023 Reference Overview
The Featureless HST/WFC3 Transmission Spectrum of the Rocky Exoplanet GJ 1132b: No Evidence for a Cloud-free Primordial Atmosphere and Constraints on Starspot Contamination
Libby-Roberts et al. 2022 Reference Overview
Analysis of Early Science observations with the CHaracterising ExOPlanets Satellite (CHEOPS) using PYCHEOPS
Maxted et al. 2022 Reference Overview
ARES. V. No Evidence For Molecular Absorption in the HST WFC3 Spectrum of GJ 1132 b
Mugnai et al. 2021 Reference Overview
Detection of an Atmosphere on a Rocky Exoplanet
Swain et al. 2021 Reference Overview
The Revised TESS Input Catalog and Candidate Target List
TICv8 Reference Overview
Radial velocity follow-up of GJ1132 with HARPS. A precise mass for planet b and the discovery of a second planet
Bonfils et al. 2018 Reference Overview
Gaia Data Release 2
Gaia DR2 Reference Overview
Ground-based Optical Transmission Spectroscopy of the Small, Rocky Exoplanet GJ 1132b
Diamond-Lowe et al. 2018 Reference Overview
ExoFOP TOI Table
ExoFOP
Detection of the Atmosphere of the 1.6 M _⊕ Exoplanet GJ 1132 b
Southworth et al. 2017 Reference Overview
On the Radial Velocity Detection of Additional Planets in Transiting, Slowly Rotating M-dwarf Systems: The Case of GJ 1132
Cloutier et al. 2017 Reference Overview
A rocky planet transiting a nearby low-mass star
Berta-Thompson et al. 2015
All WISE Data Release
Cutri et al. 2014 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 Palomar/MSU nearby star spectroscopic survey. II. The southern M dwarfs and investigations of magnetic activity.
Hawley et al. 1996 Reference Overview

Legend

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System
Star
Confirmed
Candidate
False Positive Planet
Controversial
False Positive

Aliases
Data Access
Transit Prediction Service
Time Series
Kepler | K2

External Link
Search
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Download

Debug Info

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https://vmexoweb2.ipac.caltech.edu/data/Overviews_2.0/7/GJ_1132.json

Catalog Parameters

RA

ra

10h14m50.18s

Dec

dec

-47d09m17.77s

β

elat

-52.42012

λ

elon

181.43393

b

glat

7.75911

l

glon

277.25461

m_V

sy_vmag

13.68±0.20

m_TESS

sy_tmag

10.8372000±0.0073203

m_J

sy_jmag

9.245±0.026

m_H

sy_hmag

8.666±0.031

m_Ks

sy_kmag

8.322±0.027

sy_kepmag

no_data

m_W1

sy_w1mag

8.170±0.023

m_W2

sy_w2mag

8.000±0.020

m_W3

sy_w3mag

7.862±0.018

m_W4

sy_w4mag

7.916±0.184

m_Ic

sy_icmag

10.69±0.02

m_Gaia

sy_gaiamag

12.138000±0.000387

m_B

sy_bmag

15.17±0.03

sy_gmag

no_data

sy_imag

no_data

sy_rmag

no_data

sy_umag

no_data

sy_zmag

no_data

μ

sy_pm

1132.4832583±0.0750929

μ_δ

sy_pmdec

414.3000000±0.0825484

μ_α

sy_pmra

-1053.9800000±0.0738738

π

sy_plx

79.2543000±0.0437672

Distance

sy_dist

12.613±0.007

Set Parameters

R_✶

st_rad

0.207±0.016

T_eff

st_teff

3270±140

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GJ 1132