GJ 1214

Name	Orbital Separation	Planet Size	Method	Year	Reference	Disposition
GJ 1214
GJ 1214 b	1.58 d	2.73 R_⨁	Transit	2009	Charbonneau et al. 2009	Confirmed Planet

Exoplanet Archive Notes (3)

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GJ 1214 b

Equilibrium temperature value drawn from Table 5 corresponding to Bond albedo = 0 in ref. (Kundurthy et al. 2011)
Orbital eccentricity scaled to 1-sigma. (Charbonneau et al. 2009)
Values drawn from Table 2, solution "LD Prior" in ref. (Berta et al. 2012)

GJ 1214 Stellar Parameters (18 Solutions)

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RA: 17h15m19.54s

Dec: +04d57m38.45s

Distance: 14.6427±0.0372 pc

Parallax: 68.265300±0.172281 mas

Ecliptic Latitude: 27.91224 deg

Ecliptic Longitude: 257.38248 deg

Galactic Latitude: 23.60704 deg

Galactic Longitude: 26.16217 deg

Total Proper Motion: 948.0511007±0.3416955 mas/yr

Proper Motion (RA): 580.447000±0.479398 mas/yr

Proper Motion (Dec): -749.588000±0.221265 mas/yr

Photometry: m_V
15.1±0.2; m_TESS
11.5810000±0.0074579; m_J
9.750±0.024; m_H
9.094±0.024; m_Ks
8.782±0.020; m_W1
8.598±0.023; m_W2
8.442±0.021; m_W3
8.254±0.024; m_W4
8.084±0.236; m_Ic
11.52±0.1; m_Gaia
13.008900±0.001061

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

Source	Yalçınkaya et al. 2024	Mahajan et al. 2024	Cloutier et al. 2021	TICv8	Gaia DR2	Gillon et al. 2014	Narita et al. 2013	Harpsøe et al. 2013	Berta et al. 2012	Bean et al. 2011	Croll et al. 2011	Berta et al. 2011	Carter et al. 2011	Carter et al. 2011	Kundurthy et al. 2011	Sada et al. 2010	Charbonneau et al. 2009	Hawley et al. 1996
T_eff (K)	3026±130	3101±43	3250±100	3074.0±157.0	3438.0525+437.5080-152.0520	3250±100	3000	3026±150	3026	3026	3000	---	---	3170±23	2949+27-32	---	3026±130	---
Metallicity (dex)	---	0.24±0.11 [Fe/H]	0.29±0.12 [Fe/H]	---	---	0.1±0.1 [Fe/H]	---	0.39±0.15 [Fe/H]	0 [M/H]	0 [M/H]	---	---	---	0 [Fe/H]	---	---	---	---
R_✶ (R_⦿)	---	0.2162+0.0025-0.0024	0.215±0.008	0.2145720±0.0064456	---	0.2213±0.0043	---	0.216±0.012	0.201+0.004-0.003	0.21	---	0.2064 +0.0086-0.0096	0.210±0.007	0.179±0.006	0.210+0.005-0.004	0.201+0.010-0.005	0.2110±0.0097	---
log g (log₁₀(cm/s²))	---	5.0286+0.0078-0.0088	5.026±0.040	5.038810±0.021587	---	4.994±0.012	5.0	4.944±0.013	5	5.0	5.0	---	4.99±0.04	5.12±0.01	4.94+0.22-0.26	---	4.991±0.029	---
M_✶ (M_⦿)	---	0.1820+0.0042-0.0041	0.178±0.010	0.1836070±0.0200799	---	0.176±0.009	---	0.150±0.011	---	---	---	0.157±0.019	0.157±0.012	0.156±0.006	0.153+0.010-0.009	---	0.157±0.019	---
Sp. T	---	---	M4 V	---	---	---	---	---	---	---	---	---	---	---	---	---	---	M4.5
ρ_✶ (g/cm³)	---	25.41+0.62-0.71	25.4+3.5-3.0	26.2020447±0.5127087	---	22.89±0.65	---	---	---	---	---	25.2±1.2	24.1±1.7	38.4±2.1	23.29+0.92-1.55	---	23.9±2.1	---
v sin i (km/s)	---	---	---	---	---	---	---	---	---	---	---	---	---	2.0	---	---	<2.0	---
L_✶ (log₁₀(L_⦿))	---	-2.41+0.02-0.02	-2.3+0.1-0.1	-2.4313+0.1024-0.1343	---	-2.31+0.06-0.06	---	---	---	---	---	---	---	---	-2.6+0.1-0.1	---	-2.484 +0.056-0.064	---
γ (km/s)	---	20.91±0.66	---	---	---	---	---	---	---	---	---	---	---	---	---	---	-21.1±1.0	---
Age (Gyr)	---	---	---	---	---	---	---	---	---	---	---	>3	---	---	---	---	---	---
P_rot (days)	---	---	124.7+5.0-4.8	---	---	---	---	---	---	---	---	---	---	---	---	---	---	---

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GJ 1214 b Planetary Parameters (20 Solutions)

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Status: Confirmed Planet

Detected By: Orbital Brightness Modulation, Radial Velocity, Transit

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

Source	Mahajan et al. 2024	Schlawin et al. 2024	Yalçınkaya et al. 2024	Kokori et al. 2023	Kokori et al. 2022	Cloutier et al. 2021	Cáceres et al. 2014	Gillon et al. 2014	Kreidberg et al. 2014	Narita et al. 2013	Harpsøe et al. 2013	Berta et al. 2012	de Mooij et al. 2012	Bean et al. 2011	Berta et al. 2011	Kundurthy et al. 2011	Carter et al. 2011	Carter et al. 2011	Sada et al. 2010	Charbonneau et al. 2009
a/R_✶	14.97+0.12-0.14	15.27±0.02	---	15.31+0.21-0.29	---	14.85±0.16	14.9749	---	15.23	14.9749	14.0+0.8-0.7	15.31+0.21-0.29	14.9749	14.9749	14.93±0.24	14.54+0.19-0.33	14.71 +0.37-0.33	14.71 +0.37-0.33	---	14.66±0.41
ω (deg)	77.0+7.5-61.0	90	---	---	---	---	0	---	---	---	---	---	---	---	---	---	---	---	---	---
e	0.00620+0.00790-0.00440	0	---	---	---	<0.063	0	---	0	---	---	---	---	---	---	---	---	---	---	<0.14
i (deg)	88.980+0.094-0.085	89.32±0.03	---	89.3+0.4-0.3	---	88.7±0.1	88.94	---	89.1	88.94	88.17±0.54	89.3+0.4-0.3	---	88.94	88.80 +0.25-0.20	88.39+0.14-0.21	90 +0.0-1.5	90 +0.0-1.5	---	88.62 +0.35-0.28
P (days)	1.580404531+0.000000018-0.000000017	1.580404341±0.000000079	1.580404418±0.000000058	1.580404571±0.000000042	1.58040454±0.00000004	1.58040433±0.00000013	1.580404938±0.000000090	1.58040417±0.00000022	1.58040464894	1.58040481	1.58040456±0.00000016	---	1.580408346	1.58040481±0.00000012	1.58040490±0.00000033	1.58040487±0.00000067	1.58040482±0.00000024	1.58040482±0.00000024	1.5804043±0.0000005	1.5803925±0.0000117
T_C (days)	2459639.7812619+0.0000090-0.0000089 (BJD-TDB)	2460143.93029503±0.00000358 (BJD-TDB)	2455799.398485±0.000019 (BJD-TDB)	2455886.320526±0.000023 (BJD-TDB)	2455881.579310±0.000022 (BJD-TDB)	2455701.413328+0.000066-0.000059 (BJD)	2454934.916934±0.000027 (BJD)	2454980.74900±0.00010 (BJD-TDB)	2454966.52488 (BJD-TDB)	2454966.525227±0.000067 (BJD-TDB)	2455320.535733±0.000021 (BJD-TDB)	---	2455426.42274 (HJD)	2454966.525123±0.000032 (BJD-TDB)	2454966.525042±0.000065 (BJD-TDB)	---	2454980.7487955±0.000045 (BJD-TDB)	2454980.7487955±0.000045 (BJD-TDB)	2454964.94390±0.00006 (UTC-BJD)	2454964.944208±0.000403 (HJD)
T_eq (K)	567.0±7.6	---	---	---	---	596±19	---	604±19	---	---	---	---	---	---	---	547+7-8	---	---	---	555
b	0.264+0.020-0.023	---	---	---	---	0.325±0.025	---	0.385±0.022	---	---	---	0.19+0.08-0.11	0.27729	---	0.313 +0.046-0.061	0.41+0.04-0.03	---	---	0.175+0.181-0.175	0.354 +0.061-0.082
M_p (M_⨁)	8.41+0.36-0.35	---	---	---	---	8.17±0.43	---	---	---	---	6.26±0.86	---	---	---	---	6.37±0.87	6.45±0.91	6.43±0.86	---	6.55±0.98
M_p (M_Jup)	0.0265+0.0011-0.0011	---	---	---	---	0.0257±0.0014	---	---	---	---	0.0197±0.0027	---	---	---	---	0.0200±0.0027	0.020±0.003	0.020±0.003	---	0.021±0.003
ρ (g/cm³)	2.26±0.11	---	---	---	---	2.20+0.17-0.16	---	---	---	---	1.49±0.33	---	---	---	---	1.68±0.23	1.89±0.33	3.03±0.50	---	1.870±0.400
R_p (R_⨁)	2.733+0.033-0.031	---	---	---	---	2.742+0.050-0.053	---	---	---	---	2.85±0.20	---	---	---	2.64±0.13	2.74+0.06-0.05	2.65±0.09	2.27±0.08	2.61+0.30-0.11	2.678±0.13
R_p (R_Jup)	0.2438+0.0029-0.0028	---	---	---	---	0.2446+0.0045-0.0047	---	---	---	---	0.254±0.018	---	---	---	0.24±0.01	0.244+0.005-0.004	0.236±0.008	0.203±0.007	0.233+0.027-0.010	0.239±0.012
R_p/R_✶	0.11589±0.00016	---	---	0.1160±0.0005	---	---	---	---	---	---	---	0.1160±0.0005	---	---	0.1171±0.0010	0.1195+0.0008-0.0004	0.1161±0.0048	0.1161±0.0048	---	0.1162±0.00067
K (m/s)	14.38+0.57-0.56	---	---	---	---	14.36±0.53	---	---	---	---	12.2±1.6	---	---	---	---	---	12.2±1.6	12.2±1.6	---	12.2±1.6
a (au)	0.01505±0.00011	---	---	---	---	0.01490±0.00026	---	---	---	---	0.01411±0.00032	---	---	---	---	---	---	---	---	---
T₁₄ (hours)	0.86966±0.00110	---	---	---	---	---	---	---	---	---	---	0.8688±0.0029	---	---	0.869±0.004	---	0.8788 +0.0082-0.0058	0.8788 +0.0082-0.0058	---	---
S (S_⨁)	17.2+1.0-0.9	---	---	---	---	21.0+2.7-2.5	---	---	---	---	---	---	---	---	---	---	---	---	---	---
T_p (days)	2459639.725+0.033-0.270 (BJD-TDB)	---	---	---	---	---	---	---	---	---	---	---	---	---	---	---	---	---	---	---
M_p sin i (M_⨁)	8.41+0.36-0.35	---	---	---	---	---	---	---	---	---	---	---	---	---	---	---	---	---	---	---
M_p sin i (M_Jup)	0.0265+0.0011-0.0011	---	---	---	---	---	---	---	---	---	---	---	---	---	---	---	---	---	---	---
δ (%)	1.3430+0.0037-0.0038	---	---	---	---	---	---	---	---	---	---	---	---	---	---	---	---	---	---	---

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Ancillary Information (1 Unique File)

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+ GJ 1214 (1 File Type, 1 File)

Literature Time Series (1 File Type, 1 File)

File Type	Data Points	Filter	Reference
Radial Velocity Curve	27	Optical Spectra	Charbonneau et al. 2009

Nearby Data (within 30 arcseconds) Browse Nearby Data

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Known Objects: 1 Confirmed Planets; 3 2MASS Point Source Catalog

Data Files: 1 Associated Literature Data

Bibliography (34 References)

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Possible Carbon Dioxide above the Thick Aerosols of GJ 1214 b
Schlawin et al. 2024 Reference Overview
Looking for timing variations in the transits of 16 exoplanets
Yalçınkaya et al. 2024 Reference Overview
Using JWST Transits and Occultations to Determine ∼1% Stellar Radii and Temperatures of Low-mass Stars
Mahajan et al. 2024 Reference Overview
Exploring the Ability of Hubble Space Telescope WFC3 G141 to Uncover Trends in Populations of Exoplanet Atmospheres through a Homogeneous Transmission Survey of 70 Gaseous Planets
Edwards et al. 2023 Reference Overview
A reflective, metal-rich atmosphere for GJ 1214b from its JWST phase curve
Kempton et al. 2023 Reference Overview
ExoClock Project. III. 450 New Exoplanet Ephemerides from Ground and Space Observations
Kokori et al. 2023 Reference Overview
ExoClock Project. II. A Large-scale Integrated Study with 180 Updated Exoplanet Ephemerides
Kokori et al. 2022 Reference Overview
A More Precise Mass for GJ 1214 b and the Frequency of Multiplanet Systems Around Mid-M Dwarfs
Cloutier 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
ACCESS I: An Optical Transmission Spectrum of GJ 1214b Reveals a Heterogeneous Stellar Photosphere
Rackham et al. 2017 Reference Overview
Large Binocular Telescope view of the atmosphere of GJ1214b
Nascimbeni et al. 2015 Reference Overview
Ground-based transit observations of the super-Earth GJ 1214 b
Cáceres et al. 2014 Reference Overview
Search for a habitable terrestrial planet transiting the nearby red dwarf GJ 1214
Gillon et al. 2014 Reference Overview
A search for methane in the atmosphere of GJ 1214b via GTC narrow-band transmission spectrophotometry
Wilson et al. 2014 Reference Overview
Clouds in the atmosphere of the super-Earth exoplanet GJ1214b
Kreidberg et al. 2014 Reference Overview
All WISE Data Release
Cutri et al. 2014 Reference Overview
Search for Rayleigh Scattering in the Atmosphere of GJ1214b
de Mooij et al. 2013 Reference Overview
IRSF SIRIUS JHK_s Simultaneous Transit Photometry of GJ 1214b
Narita et al. 2013 Reference Overview
The transiting system GJ1214: high-precision defocused transit observations and a search for evidence of transit timing variation
Harpsøe et al. 2013 Reference Overview
Narrow band Hα photometry of the super-Earth GJ 1214b with GTC/OSIRIS tunable filters
Murgas et al. 2012 Reference Overview
The Flat Transmission Spectrum of the Super-Earth GJ1214b from Wide Field Camera 3 on the Hubble Space Telescope
Berta et al. 2012 Reference Overview
Optical to near-infrared transit observations of super-Earth GJ 1214b: water-world or mini-Neptune?
de Mooij et al. 2012 Reference Overview
The Optical and Near-infrared Transmission Spectrum of the Super-Earth GJ 1214b: Further Evidence for a Metal-rich Atmosphere
Bean et al. 2011 Reference Overview
Broadband Transmission Spectroscopy of the Super-Earth GJ 1214b Suggests a Low Mean Molecular Weight Atmosphere
Croll et al. 2011 Reference Overview
The GJ1214 Super-Earth System: Stellar Variability, New Transits, and a Search for Additional Planets
Berta et al. 2011 Reference Overview
The Transit Light Curve Project. XIII. Sixteen Transits of theSuper-Earth GJ 1214b
Carter et al. 2011 Reference Overview
APOSTLE Observations of GJ 1214b: System Parameters and Evidence for Stellar Activity
Kundurthy et al. 2011 Reference Overview
Observational Evidence for a Metal-rich Atmosphere on the Super-Earth GJ1214b
Désert et al. 2011 Reference Overview
Recent Transits of the Super-Earth Exoplanet GJ 1214b
Sada et al. 2010 Reference Overview
A super-Earth transiting a nearby low-mass star
Charbonneau et al. 2009 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
Browse
Download

Debug Info

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https://vmexoweb2.ipac.caltech.edu/data/Overviews_2.0/7/GJ_1214.json

Catalog Parameters

RA

ra

17h15m19.54s

Dec

dec

+04d57m38.45s

β

elat

27.91224

λ

elon

257.38248

b

glat

23.60704

l

glon

26.16217

m_V

sy_vmag

15.1±0.2

m_TESS

sy_tmag

11.5810000±0.0074579

m_J

sy_jmag

9.750±0.024

m_H

sy_hmag

9.094±0.024

m_Ks

sy_kmag

8.782±0.020

sy_kepmag

no_data

m_W1

sy_w1mag

8.598±0.023

m_W2

sy_w2mag

8.442±0.021

m_W3

sy_w3mag

8.254±0.024

m_W4

sy_w4mag

8.084±0.236

m_Ic

sy_icmag

11.52±0.1

m_Gaia

sy_gaiamag

13.008900±0.001061

sy_bmag

no_data

sy_gmag

no_data

sy_imag

no_data

sy_rmag

no_data

sy_umag

no_data

sy_zmag

no_data

μ

sy_pm

948.0511007±0.3416955

μ_δ

sy_pmdec

-749.588000±0.221265

μ_α

sy_pmra

580.447000±0.479398

π

sy_plx

68.265300±0.172281

Distance

sy_dist

14.6427±0.0372

Set Parameters

R_✶

st_rad

0.201+0.004-0.003

T_eff

st_teff

3026

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GJ 1214