GJ 3470

Name	Orbital Separation	Planet Size	Method	Year	Reference	Disposition
GJ 3470
GJ 3470 b	3.34 d	4.57 R_⨁	Radial Velocity	2012	Bonfils et al. 2012	Confirmed Planet

Exoplanet Archive Notes (3)

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GJ 3470

Equilibrium temperature value/uncertainties estimated from range given in ref. (Awiphan et al. 2016)
Stellar age value/uncertainties estimated from range given in ref. (Kosiarek et al. 2019)

GJ 3470 b

Typo in published unit of RV semi-amplitude in Table 2. (Bonfils et al. 2012)

GJ 3470 Stellar Parameters (10 Solutions)

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RA: 07h59m05.64s

Dec: +15d23m28.35s

Distance: 29.4214+0.0508-0.0507
pc

Parallax: 33.9601000±0.0581536 mas

Ecliptic Latitude: -5.12786 deg

Ecliptic Longitude: 118.72644 deg

Galactic Latitude: 21.75667 deg

Galactic Longitude: 206.23529 deg

Total Proper Motion: 194.3609859±0.1028126 mas/yr

Proper Motion (RA): -185.734000±0.105966 mas/yr

Proper Motion (Dec): -57.2632000±0.0603679 mas/yr

Photometry: m_V
12.332±0.016; m_TESS
10.2479000±0.0073281; m_J
8.794±0.026; m_H
8.206±0.023; m_Ks
7.989±0.023; m_W1
7.807±0.027; m_W2
7.783±0.020; m_W3
7.683±0.020; m_W4
7.786±0.215; m_Ic
10.080±0.013; m_Gaia
11.353700±0.001255; m_B
13.785±0.044; m_g
15.4392000±0.0101128; m_i
10.7632000±0.0004918; m_r
11.8694000±0.0008937; m_u
15.9337000±0.0067464; m_z
10.5750000±0.0017872

Abundances (Hypatia Catalog): [Fe/H] 0.25±0.04 dex; [C/H] 0.27±0.09 dex; [O/H] 0.13±0.09 dex; [Na/H] 0.15±0.04 dex; [Mg/H] 0.19±0.07 dex; [Al/H] 0.06±0.06 dex; [Si/H] 0.18±0.05 dex; [Ca/H] 0.24±0.06 dex

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

Source	TICv8	Kosiarek et al. 2019	Gaia DR2	Awiphan et al. 2016	Biddle et al. 2014	Fukui et al. 2013	Demory et al. 2013	Bonfils et al. 2012	Hawley et al. 1996	ExoFOP
T_eff (K)	3552.0±157.0	3652±50	3775.500+184.035-45.500	3600±100	3652±50	---	3600±100	3600±200	---	3552±157
L_✶ (log₁₀(L_⦿))	-1.44600+0.09264-0.11791	-1.5+0.0-0.0	---	---	---	---	---	-1.538 +0.029-0.031	---	---
γ (km/s)	---	---	26.089736737552283±0.251041932265976	---	---	---	---	26.51691±0.00053	---	---
Age (Gyr)	---	1.65±1.35	---	---	2.5±1.5	---	---	1.65±1.35	---	---
M_✶ (M_⦿)	0.4977570±0.0203467	0.51±0.06	---	0.539+0.047-0.043	0.51±0.06	0.557+0.028-0.020	0.539+0.047-0.043	0.541±0.067	---	---
R_✶ (R_⦿)	0.4996980±0.0149283	0.48±0.04	---	0.547±0.018	0.48±0.04	0.526+0.023-0.011	0.568+0.037-0.031	0.503±0.063	---	0.499698013067245±0.014928300000000
Sp. T	---	M1.5	---	---	---	---	---	M1.5	M1.5	---
Metallicity (dex)	---	0.20±0.10 [Fe/H]	---	0.20±0.10 [Fe/H]	0.18±0.08 [Fe/H]	---	0.20±0.10 [Fe/H]	---	---	---
ρ_✶ (g/cm³)	5.6241919±0.2744326	---	---	3.30±0.17	6.51±1.55	5.40+0.20-0.45	4.10+0.52-0.47	---	---	---
log g (log₁₀(cm/s²))	4.7376700±0.0081941	4.658±0.035	---	4.695±0.046	4.78±0.12	4.741+0.009-0.019	4.658±0.035	---	---	4.74±0.01
P_rot (days)	---	21.54±0.49	---	---	---	---	---	---	---	---

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GJ 3470 b Planetary Parameters (11 Solutions)

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Status: Confirmed Planet

Detected By: Radial Velocity, Transit

Tools: Planetary Systems; TOI; Transit; Atmospheric Spectroscopy

Source	Awiphan et al. 2016	Kokori et al. 2023	Kosiarek et al. 2019	Dragomir et al. 2015	Biddle et al. 2014	Nascimbeni et al. 2013	Crossfield et al. 2013	Fukui et al. 2013	Demory et al. 2013	Bonfils et al. 2012	ExoFOP
b	---	---	---	0.470+0.074-0.110	0.29±0.14	---	---	<0.281	0.40+0.06-0.08	---	---
M_p (M_⨁)	13.9±1.5	---	12.58+1.31-1.28	---	13.73±1.61	---	---	14.1±1.3	13.9+1.5-1.4	14.0±1.7	---
M_p (M_Jup)	0.0437±0.0047	---	0.03958+0.00412-0.00403	---	0.043±0.005	---	---	0.0444±0.0041	0.0437+0.0047-0.0044	0.044±0.005	---
i (deg)	89.13+0.26-0.34	88.9+0.6-0.5	---	---	88.88 +0.62-0.45	88.12+0.34-0.30	88.98+0.94-1.25	---	88.3+0.5-0.4	>88.8	---
P (days)	3.3366496+0.0000039-0.0000033	3.33665240±0.00000014	3.336649+0.000084-0.000081	3.3366413±0.0000060	3.3366487 +0.0000043-0.0000033	3.336649±0.000002	3.336665±0.000008	3.336649±0.000005	3.33665±0.00005	3.33714±0.00017	3.33665106328833±0.00000128701750
ρ (g/cm³)	0.80±0.13	---	0.930+0.560-0.310	---	1.18±0.33	---	---	0.940±0.120	0.72+0.13-0.12	1.07±0.43	---
R_p (R_⨁)	4.57±0.18	---	3.88±0.32	---	3.88±0.32	---	---	4.32+0.21-0.10	4.83+0.22-0.21	4.2±0.6	4.1305078145615±0.1541720800000
R_p (R_Jup)	0.408±0.016	---	0.346±0.029	---	0.346±0.029	---	---	0.385+0.019-0.009	0.431+0.020-0.019	0.37±0.05	0.36849985963144±0.01375433539644
R_p/R_✶	---	0.0764±0.0004	---	---	0.07642±0.00037	---	0.0789+0.0021-0.0019	---	0.07798+0.00046-0.00045	0.0755±0.0031	---
K (m/s)	13.4±1.2	---	8.21+0.47-0.46	---	---	---	---	---	8.9±1.1	9.01±0.75	---
a (au)	0.0355±0.0019	---	---	---	0.031±0.0028	---	---	0.03596+0.00059-0.00044	0.03557+0.00096-0.00100	0.0348±0.0014	---
T₁₄ (hours)	---	---	1.918+0.024-0.024	1.918+0.024-0.024	---	---	---	---	1.90±0.01	---	1.85800338420603±0.03204808000000
T_C (days)	2455983.70421 (BJD)	2456974.689880±0.000059 (BJD-TDB)	2455953.6630±0.0035 (JD)	2456677.727712±0.000220 (BJD-TDB)	2455983.70472±0.00021 (BJD-TDB)	2456340.72559+0.00009-0.00011 (BJD-TDB)	2456390.77580±0.00040 (BJD-TDB)	2456247.29954±0.00019 (BJD-TDB)	2456090.47701±0.00010 (BJD-TDB)	2455953.6645±0.0034 (BJD)	2459500.53574000±0.00011513 (BJD)
a/R_✶	13.98+0.20-0.28	13.9+0.4-0.5	12.92+0.72-0.65	12.92+0.72-0.65	13.94 +0.44-0.49	---	14.2450+0.5698-1.3915	14.70+0.17-0.43	---	14.9±1.2	---
T_eq (K)	593.5±96.5	---	615±16	---	604±98	---	---	---	---	615±16	595.191322613779
e	---	0.017+0.016-0.012	0.114+0.052-0.051	---	0.017 +0.016-0.012	---	---	---	---	<0.051	---
δ (%)	---	---	---	---	---	---	---	---	---	0.52±0.04	0.676587043260467±0.004308213000000
ω (deg)	---	1.7+1.0-1.2	-82.5+5.7-2.3	---	1.70 +0.96-1.20	---	---	---	---	---	---
S (S_⨁)	---	---	---	---	---	---	---	---	---	---	29.6583759145902

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Ancillary Information (1 Unique File)

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+ GJ 3470 (1 File Type, 1 File)

Literature Time Series (1 File Type, 1 File)

File Type	Data Points	Filter	Reference
Radial Velocity Curve	61	Optical Spectra	Bonfils et al. 2012

Nearby Data (within 30 arcseconds) Browse Nearby Data

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

Data Files: 1 Associated Literature Data

Bibliography (22 References)

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Sulfur Dioxide and Other Molecular Species in the Atmosphere of the Sub-Neptune GJ 3470 b
Beatty 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
ExoClock Project. III. 450 New Exoplanet Ephemerides from Ground and Space Observations
Kokori et al. 2023 Reference Overview
The Revised TESS Input Catalog and Candidate Target List
TICv8 Reference Overview
A sub-Neptune exoplanet with a low-metallicity methane-depleted atmosphere and Mie-scattering clouds
Benneke et al. 2019 Reference Overview
Bright Opportunities for Atmospheric Characterization of Small Planets: Masses and Radii of K2-3 b, c, and d and GJ3470 b from Radial Velocity Measurements and Spitzer Transits
Kosiarek et al. 2019 Reference Overview
Gaia Data Release 2
Gaia DR2 Reference Overview
ExoFOP TOI Table
ExoFOP
Transit timing variation and transmission spectroscopy analyses of the hot Neptune GJ3470b
Awiphan et al. 2016 Reference Overview
Rayleigh Scattering in the Atmosphere of the Warm Exo-Neptune GJ 3470b
Dragomir et al. 2015 Reference Overview
Near-infrared transmission spectrum of the warm-Uranus GJ 3470b with the Wide Field Camera-3 on the Hubble Space Telescope
Ehrenreich et al. 2014 Reference Overview
Warm ice giant GJ 3470b - II. Revised planetary and stellar parameters from optical to near-infrared transit photometry
Biddle et al. 2014 Reference Overview
All WISE Data Release
Cutri et al. 2014 Reference Overview
The blue sky of GJ3470b: the atmosphere of a low-mass planet unveiled by ground-based photometry
Nascimbeni et al. 2013 Reference Overview
Warm ice giant GJ 3470b. I. A flat transmission spectrum indicates a hazy, low-methane, and/or metal-rich atmosphere
Crossfield et al. 2013 Reference Overview
Optical-to-near-infrared Simultaneous Observations for the Hot Uranus GJ3470b: A Hint of a Cloud-free Atmosphere
Fukui et al. 2013 Reference Overview
Spitzer Observations of GJ 3470 b: A Very Low-density Neptune-size Planet Orbiting a Metal-rich M Dwarf
Demory et al. 2013 Reference Overview
A hot Uranus transiting the nearby M dwarf GJ3470. Detected with HARPS velocimetry. Captured in transit with TRAPPIST photometry
Bonfils et al. 2012 Reference Overview
2MASS All-Sky Catalog of Point Sources
2MASS Point Source Catalog 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
Preliminary Version of the Third Catalog of Nearby Stars
Gliese Catalog Reference Overview
Photometric parallaxes for selected stars of color class M fromthe NLTT catalog. II - The declination zone 0 deg to +20 deg
Weis 1986 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
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Debug Info

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https://vmexoweb2.ipac.caltech.edu/data/Overviews_2.0/7/GJ_3470.json

Catalog Parameters

RA

ra

07h59m05.64s

Dec

dec

+15d23m28.35s

β

elat

-5.12786

λ

elon

118.72644

b

glat

21.75667

l

glon

206.23529

m_V

sy_vmag

12.332±0.016

m_TESS

sy_tmag

10.2479000±0.0073281

m_J

sy_jmag

8.794±0.026

m_H

sy_hmag

8.206±0.023

m_Ks

sy_kmag

7.989±0.023

sy_kepmag

no_data

m_W1

sy_w1mag

7.807±0.027

m_W2

sy_w2mag

7.783±0.020

m_W3

sy_w3mag

7.683±0.020

m_W4

sy_w4mag

7.786±0.215

m_Ic

sy_icmag

10.080±0.013

m_Gaia

sy_gaiamag

11.353700±0.001255

m_B

sy_bmag

13.785±0.044

m_g

sy_gmag

15.4392000±0.0101128

m_i

sy_imag

10.7632000±0.0004918

m_r

sy_rmag

11.8694000±0.0008937

m_u

sy_umag

15.9337000±0.0067464

m_z

sy_zmag

10.5750000±0.0017872

μ

sy_pm

194.3609859±0.1028126

μ_δ

sy_pmdec

-57.2632000±0.0603679

μ_α

sy_pmra

-185.734000±0.105966

π

sy_plx

33.9601000±0.0581536

Distance

sy_dist

29.4214+0.0508-0.0507

Set Parameters

R_✶

st_rad

0.503±0.063

T_eff

st_teff

3600±200

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