WASP-17

Name	Orbital Separation	Planet Size	Method	Year	Reference	Disposition
WASP-17
WASP-17 b	3.74 d	20.96 R_⨁	Transit	2009	Anderson et al. 2010	Confirmed Planet

WASP-17 Stellar Parameters (14 Solutions)

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RA: 15h59m50.94s

Dec: -28d03m42.46s

Distance: 405.908+8.779-8.421
pc

Parallax: 2.4365600±0.0517685 mas

Ecliptic Latitude: -7.33863 deg

Ecliptic Longitude: 243.54899 deg

Galactic Latitude: 18.66769 deg

Galactic Longitude: 345.95969 deg

Total Proper Motion: 12.5908023±0.0776622 mas/yr

Proper Motion (RA): -8.100100±0.101597 mas/yr

Proper Motion (Dec): -9.6393300±0.0547881 mas/yr

Photometry: m_V
11.588±0.015; m_TESS
11.0261±0.0062; m_J
10.509±0.027; m_H
10.319±0.024; m_Ks
10.224±0.027; m_W1
10.197±0.024; m_W2
10.225±0.020; m_W3
10.093±0.078; m_W4
8.805; m_Gaia
11.380300±0.000982; m_B
11.826±0.190

Abundances (Hypatia Catalog): [Fe/H] -0.01±0.20 dex; [C/H] -0.07±0.22 dex; [O/H] 0.10±0.06 dex; [Na/H] -0.12±0.19 dex; [Mg/H] -0.09±0.20 dex; [Al/H] -0.37±0.08 dex; [Si/H] -0.07±0.06 dex; [Ca/H] 0.02±0.09 dex; [Y/H] -0.12±0.05 dex

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

Source	Grant et al. 2023	TICv8	Gaia DR2	Bonomo et al. 2017	Stassun et al. 2017	Sedaghati et al. 2016	Tsantaki et al. 2014	Knutson et al. 2014	Mortier et al. 2013	Southworth et al. 2012	Anderson et al. 2011	Triaud et al. 2010	Anderson et al. 2010	ExoFOP
T_eff (K)	6550	6548.000+138.197-142.289	6218.000+317.667-138.020	6650±80	6550±100	---	6666±30	---	6794±83	---	6650±80	6650±80	6550±100	6650
γ (km/s)	---	---	-47.977050594515134±1.270531493274848	---	---	---	---	---	---	---	-49.51367±0.00056	---	-49.5128±0.0016	---
v sin i (km/s)	---	---	---	10.05+0.88-0.79	---	---	9.93	---	---	---	10.05+0.88-0.79	9.920+0.400-0.450	9.0±1.5	---
M_✶ (M_⦿)	---	1.354000+0.269619-0.158546	---	1.306±0.026	2.28±0.99	1.306±0.026	---	1.286±0.079	1.20±0.08	1.286±0.079	1.306±0.026	1.20±0.12	1.20±0.12	---
R_✶ (R_⦿)	---	1.5732300+0.0842382-0.0924704	1.6021124+0.0735638-0.1519570	1.572±0.056	1.49±0.19	1.572±0.056	---	---	0.73±0.08	1.583±0.041	1.572±0.056	1.579+0.067-0.060	1.38±0.20	1.57±0.09
Metallicity (dex)	-0.25 [Fe/H]	-0.070±0.100 [M/H]	---	-0.190±0.090 [Fe/H]	-0.25 [Fe/H]	---	-0.04±0.03 [Fe/H]	-0.020±0.090 [Fe/H]	-0.12±0.05 [Fe/H]	---	-0.19±0.09 [Fe/H]	-0.19±0.09 [Fe/H]	---	---
ρ_✶ (g/cm³)	---	0.4902361+0.0978443-0.1589762	---	---	0.980±0.200	---	---	---	0.32±0.01	0.457±0.017	0.474±0.042	0.428+0.023-0.028	---	---
log g (log₁₀(cm/s²))	4.149	4.1761000+0.0689027-0.1220980	---	---	4.20±0.20	---	4.26±0.06	---	4.83±0.09	4.149±0.014	4.161±0.026	4.45±0.15	---	4.1639
Sp. T	---	---	---	---	---	---	---	---	---	---	---	F4	---	---
L_✶ (log₁₀(L_⦿))	---	0.6127156+0.0318970-0.0319628	0.5386836+0.0123959-0.0127602	---	---	---	---	---	---	---	---	---	---	---
Age (Gyr)	---	---	---	2.65±0.25	---	---	---	---	---	2.70+0.85-1.17	---	---	---	---

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WASP-17 b Planetary Parameters (16 Solutions)

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Status: Confirmed Planet

Detected By: Radial Velocity, Transit

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

Source	Stassun et al. 2017	Grant et al. 2023	Panek et al. 2023	Kokori et al. 2023	Patel & Espinoza 2022	Ivshina & Winn 2022	Bonomo et al. 2017	Barstow et al. 2017	Sedaghati et al. 2016	Sing et al. 2016	Knutson et al. 2014	Southworth et al. 2012	Anderson et al. 2011	Triaud et al. 2010	Anderson et al. 2010	ExoFOP
ω (deg)	---	---	---	---	---	---	---	---	90.0	---	179±120	---	-82.6+14.6-2.6	---	290 +106-16	---
M_p (M_⨁)	248±73	---	---	---	---	---	163±12	---	154±10	162	168+15-15	152±10	154±10	144+14-11	156 +19-18	---
M_p (M_Jup)	0.780±0.230	---	---	---	---	---	0.512±0.037	---	0.486±0.032	0.51	0.529+0.047-0.048	0.477±0.033	0.486±0.032	0.453+0.043-0.035	0.490 +0.059-0.056	---
e	0.0	---	---	---	---	---	<0.020	---	0	---	0.039+0.050-0.027	0	0.028+0.015-0.018	<0.11	0.129 +0.106-0.068	---
K (m/s)	59.2±2.9	---	---	---	---	---	56.0+4.1-4.0	---	---	---	58.8+4.4-4.7	---	53.2±3.4	52.7+3.0-2.8	---	---
P (days)	3.735430±0.000008	3.73548546	---	3.73548545±0.00000026	3.7354300+0.0000071-0.0000074	3.7354826±0.0000015	3.7354845±0.0000019	---	3.735438	3.73	---	3.7354845±0.0000019	3.7354380±0.0000068	3.7354330+0.0000076-0.0000075	3.7354417 +0.0000072-0.0000073	3.7354838±0.0000021
T_C (days)	---	2460016.726452±0.000061 (BJD-TDB)	---	2457569.98347±0.00012 (BJD-TDB)	2458638.33209±0.00026 (BJD)	2457192.70049±0.00089 (BJD-TDB)	2454592.80154±0.00005 (BJD-TDB)	---	2457192.69798±0.00028 (HJD)	---	---	2454592.80154±0.00050 (BJD-TDB)	2454577.85806±0.00027 (HJD-UTC)	2454559.18096+0.00025-0.00021 (BJD)	2454559.18102±0.00028 (HJD)	2459355.5456300±0.0002571 (BJD)
a/R_✶	8.97±0.62	7.110±0.040	---	7.03±0.15	7.32+0.11-0.18	---	---	---	7.025±0.146	---	---	6.9638+0.0884-0.0862	---	6.8166+0.1182-0.1500	---	---
b	---	---	---	---	0.180+0.130-0.100	---	---	---	0.361±0.069	---	---	---	0.401+0.059-0.077	0.400+0.043-0.040	---	---
i (deg)	86.63±0.42	87.217±0.135	---	87.1±0.6	---	---	86.83+0.68-0.53	---	87.06+0.61-0.63	---	---	86.71±0.30	86.83+0.68-0.56	86.63+0.39-0.45	87.8 +2.0-1.0	---
R_p (R_⨁)	21.0±2.7	---	19.2	---	---	---	22.32±0.91	---	19.58±0.87	21.2	---	21.66±0.59	22.32±0.91	22.26+1.00-0.83	19.5 +2.9-2.6	21.23150±1.19579
R_p (R_Jup)	1.87±0.24	---	1.71	---	---	---	1.991±0.081	---	1.747±0.078	1.89	---	1.932±0.053	1.991±0.081	1.986+0.089-0.074	1.74 +0.26-0.23	1.894151±0.106681
R_p/R_✶	---	0.12472±0.00016	---	0.1235±0.0011	0.1218+0.0016-0.0014	---	---	---	0.12345±0.00109	---	---	0.1255±0.0007	---	0.12929+0.00077-0.00061	---	---
a (au)	---	---	---	---	---	---	0.05151±0.00035	---	0.0513±0.0029	---	---	0.05125±0.00103	0.05150±0.00034	0.0500±0.0017	0.051 +0.0017-0.0018	---
δ (%)	1.700±0.018	---	---	---	---	---	---	---	---	---	---	---	1.696±0.026	1.672+0.020-0.016	1.672 +0.029-0.035	1.7030000000±0.0000271732
T₁₄ (hours)	---	---	---	---	---	---	---	---	---	---	---	---	4.392±0.041	4.423+0.031-0.024	4.3728 +0.0456-0.0552	4.142±0.045
λ (deg)	---	---	---	---	---	---	---	---	---	---	---	---	---	-148.5 +5.1-4.2	---	---
T_eq (K)	---	---	---	---	---	---	---	1738	---	1740	---	1755±28	1771±35	---	---	1670
S (S_⨁)	---	---	---	---	---	---	---	---	---	---	---	---	---	---	---	1292.19
ρ (g/cm³)	---	---	---	---	---	---	0.080+0.013-0.011	---	0.121±0.024	---	---	0.0820±0.0064	0.0817±0.0106	---	0.122 +0.072-0.043	---

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Ancillary Information (5 Unique Files)

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+ WASP-17 (3 File Types, 5 Files)

Literature Time Series (3 File Types, 5 Files)

File Type	Data Points	Filter	Reference
Photometric Light Curve	181	Ic (Cousins)	Anderson et al. 2010
Photometric Light Curve	16869	Clear, no filter	SuperWASP Consortium
Radial Velocity Curve	41	Optical Spectra	Anderson et al. 2010
Radial Velocity Curve	3	Optical Spectra	Anderson et al. 2010
Amateur Light Curve	163	I (Generic)	Amateur-Contributed Light Curves

Nearby Data (within 30 arcseconds) Browse Nearby Data

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

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

Bibliography (33 References)

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JWST-TST DREAMS: A Precise Water Abundance for Hot Jupiter WASP-17b from the NIRISS SOSS Transmission Spectrum
Louie et al. 2025 Reference Overview
JWST-TST DREAMS: A Supersolar Metallicity in WASP-17 bs Dayside Atmosphere from NIRISS SOSS Eclipse Spectroscopy
Gressier et al. 2025 Reference Overview
JWST-TST DREAMS: Nonuniform Dayside Emission for WASP-17b from MIRI/LRS
Valentine et al. 2024 Reference Overview
JWST-TST DREAMS: Quartz Clouds in the Atmosphere of WASP-17b
Grant et al. 2023 Reference Overview
A re-analysis of equilibrium chemistry in five hot Jupiters
Panek et al. 2023 Reference Overview
ExoClock Project. III. 450 New Exoplanet Ephemerides from Ground and Space Observations
Kokori et al. 2023 Reference Overview
Emergent Spectral Fluxes of Hot Jupiters: An Abrupt Rise in Dayside Brightness Temperature Under Strong Irradiation
Deming et al. 2023 Reference Overview
The Transmission Spectrum of WASP-17 b From the Optical to the Near-infrared Wavelengths: Combining STIS, WFC3, and IRAC Data Sets
Saba et al. 2022 Reference Overview
Empirical Limb-darkening Coefficients and Transit Parameters of Known Exoplanets from TESS
Patel & Espinoza 2022 Reference Overview
A comprehensive analysis of WASP-17b's transmission spectrum from space-based observations
Alderson et al. 2022 Reference Overview
TESS Transit Timing of Hundreds of Hot Jupiters
Ivshina & Winn 2022 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
The GAPS Programme with HARPS-N at TNG . XIV. Investigating giant planet migration history via improved eccentricity and mass determination for 231 transiting planets
Bonomo et al. 2017 Reference Overview
Accurate Empirical Radii and Masses of Planets and Their Host Stars with Gaia Parallaxes
Stassun et al. 2017 Reference Overview
A Consistent Retrieval Analysis of 10 Hot Jupiters Observed in Transmission
Barstow et al. 2017 Reference Overview
Potassium detection in the clear atmosphere of a hot-Jupiter. FORS2 transmission spectroscopy of WASP-17b
Sedaghati et al. 2016 Reference Overview
A continuum from clear to cloudy hot-Jupiter exoplanets without primordial water depletion
Sing et al. 2016 Reference Overview
Spectroscopic parameters for solar-type stars with moderate-to-high rotation. New parameters for ten planet hosts
Tsantaki et al. 2014 Reference Overview
Friends of Hot Jupiters I: A Radial Velocity Search for Massive, Long-Period Companions to Close-In Gas Giant Planets
Knutson et al. 2014 Reference Overview
All WISE Data Release
Cutri et al. 2014 Reference Overview
Optical transmission photometry of the highly inflated exoplanet WASP-17b
Bento et al. 2014 Reference Overview
Exoplanet Transit Spectroscopy Using WFC3: WASP-12 b, WASP-17 b, and WASP-19 b
Mandell et al. 2013 Reference Overview
New and updated stellar parameters for 90 transit hosts. The effect of the surface gravity
Mortier et al. 2013 Reference Overview
High-precision photometry by telescope defocusing - IV. Confirmation of the huge radius of WASP-17 b
Southworth et al. 2012 Reference Overview
Thermal emission at 4.5 and 8 μm of WASP-17b, an extremely large planet in a slightly eccentric orbit
Anderson et al. 2011 Reference Overview
Transmission spectroscopy of the sodium D doublet in WASP-17b with the VLT
Wood et al. 2011 Reference Overview
Spin-orbit angle measurements for six southern transiting planets. New insights into the dynamical origins of hot Jupiters
Triaud et al. 2010 Reference Overview
Exoplanet Archive Help: Amateur Light Curves
Amateur-Contributed Light Curves
Wasp-17b: An Ultra-Low Density Planet in a Probable RetrogradeOrbit
Anderson et al. 2010 Reference Overview
2MASS All-Sky Catalog of Point Sources
2MASS Point Source Catalog Reference Overview
SuperWASP: Wide Angle Search for Planets
SuperWASP Consortium

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/WASP-17.json

Catalog Parameters

RA

ra

15h59m50.94s

Dec

dec

-28d03m42.46s

β

elat

-7.33863

λ

elon

243.54899

b

glat

18.66769

l

glon

345.95969

m_V

sy_vmag

11.588±0.015

m_TESS

sy_tmag

11.0261±0.0062

m_J

sy_jmag

10.509±0.027

m_H

sy_hmag

10.319±0.024

m_Ks

sy_kmag

10.224±0.027

sy_kepmag

no_data

m_W1

sy_w1mag

10.197±0.024

m_W2

sy_w2mag

10.225±0.020

m_W3

sy_w3mag

10.093±0.078

m_W4

sy_w4mag

8.805

sy_icmag

no_data

m_Gaia

sy_gaiamag

11.380300±0.000982

m_B

sy_bmag

11.826±0.190

sy_gmag

no_data

sy_imag

no_data

sy_rmag

no_data

sy_umag

no_data

sy_zmag

no_data

μ

sy_pm

12.5908023±0.0776622

μ_δ

sy_pmdec

-9.6393300±0.0547881

μ_α

sy_pmra

-8.100100±0.101597

π

sy_plx

2.4365600±0.0517685

Distance

sy_dist

405.908+8.779-8.421

Set Parameters

R_✶

st_rad

1.38±0.20

T_eff

st_teff

6550±100

WASP-17 Overview

WASP-17 Architecture & Discovery Information

WASP-17