WASP-33 Overview

WASP-33 C 0.80 R_⦿ 5014.00 K

WASP-33 1.44 R_⦿ 7430.00 K

WASP-33 b

1.593 R_Jup

Overview Notes System Parameters Ancillary Nearby Data Legend

Architecture: WASP-33; WASP-33 C; WASP-33

Other Data: Bibliography 18; Exoplanet Archive Notes 3; WASP-33 C Nearby Data 5; WASP-33 Nearby Data 5

Discovery Data

Host	Planet	Method	Year	Reference	Disposition
WASP-33	WASP-33 b	Transit	2010	Collier Cameron et al. 2010	Confirmed Planet

Exoplanet Archive Notes (3)

WASP-33

This reference contains discussion regarding the stellar multiplicity of this system. (Mugrauer 2019)

WASP-33 b

Values for orbital parameters drawn from Table 9, solution that takes pulsations into account. (von Essen et al. 2014)
Orbital period provided by authors via private communication. See literature discrepancies page. (Stassun et al. 2017)

WASP-33 C Stellar Parameters (1 Solutions)

RA: 02h26m51.67s

Dec: +37d32m13.18s

Distance: 121.356+0.743-0.735
pc

Parallax: 8.2117600±0.0498071 mas

Ecliptic Latitude: 21.74191 deg

Ecliptic Longitude: 46.81306 deg

Galactic Latitude: -21.5685 deg

Galactic Longitude: 143.10449 deg

Total Proper Motion: 12.0045163±0.0710426 mas/yr

Proper Motion (RA): -5.2461800±0.0815467 mas/yr

Proper Motion (Dec): -10.7975000±0.0683277 mas/yr

Photometry: m_V
11.274±0.018; m_TESS
10.7503±0.0062; m_J
9.958±0.021; m_H
9.497±0.023; m_Ks
9.397±0.018; m_W1
9.325±0.023; m_W2
9.356±0.020; m_W3
9.276±0.043; m_W4
8.266; m_Gaia
11.319500±0.000828; m_B
12.238±0.217

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

Source	TICv8
T_eff (K)	5014.0000+142.0380-91.5264
L_✶ (log₁₀(L_⦿))	-0.4389781+0.0109509-0.0154892
ρ_✶ (g/cm³)	2.2983975+0.5794020-0.4967481
M_✶ (M_⦿)	0.833000+0.102813-0.089077
R_✶ (R_⦿)	0.7994570+0.0554472-0.0379447
log g (log₁₀(cm/s²))	4.5531200+0.0774525-0.0876156

WASP-33 Stellar Parameters (9 Solutions)

RA: 02h26m51.06s

Dec: +37d33m01.60s

Distance: 121.944+0.998-0.983
pc

Parallax: 8.1724400±0.0661056 mas

Ecliptic Latitude: 21.75524 deg

Ecliptic Longitude: 46.81598 deg

Galactic Latitude: -21.55688 deg

Galactic Longitude: 143.09688 deg

Total Proper Motion: 9.0298956±0.1047653 mas/yr

Proper Motion (RA): -0.976046±0.118284 mas/yr

Proper Motion (Dec): -8.976990±0.104595 mas/yr

Photometry: m_V
8.14±0.03; m_TESS
7.87611±0.00630; m_J
7.581±0.021; m_H
7.516±0.024; m_Ks
7.468±0.024; m_W1
7.383±0.036; m_W2
7.443±0.020; m_W3
7.467±0.019; m_W4
7.254±0.113; m_Gaia
8.070040±0.000433; m_B
8.412±0.027

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

Source	TICv8	Chakrabarty & Sengupta 2019	Gaia DR2	Zhang et al. 2018	Stassun et al. 2017	Turner et al. 2016	Collier Cameron et al. 2010	Cannon & Pickering 1918	ExoFOP-TESS TOI	Show Candidate Solutions >>	<< Hide Candidate Solutions
T_eff (K)	7308.000+132.990-109.483	7430±100	7398.5+147.5-168.5	7400	7308±71	7430	7430±100	---	7398.5±157.7
Metallicity (dex)	---	---	---	0.1 [M/H]	0.0 [Fe/H]	0.10 [Fe/H]	---	---	---
log g (log₁₀(cm/s²))	4.2467900+0.0996698-0.0664834	---	---	4.3	4.50	4.30	---	---	4.25±0.08
M_✶ (M_⦿)	1.653000+0.349901-0.186591	1.495±0.031	---	---	1.85±0.25	---	1.495±0.031	---	---
R_✶ (R_⦿)	1.6024200+0.0618769-0.0545452	1.444±0.034	1.5586445+0.0734972-0.0603374	---	1.55±0.05	---	1.444±0.034	---	1.60241997241974±0.05821110000000
L_✶ (log₁₀(L_⦿))	0.8194427+0.0177128-0.0158780	---	0.81676362+0.00450600-0.00455325	---	---	---	---	---	---
Sp. T	---	---	---	---	---	---	---	A5	---
v sin i (km/s)	---	---	---	---	---	---	90±10	---	---
ρ_✶ (g/cm³)	0.5663794+0.1526165-0.0916050	---	---	---	0.70±0.06	---	---	---	---

WASP-33 b Planetary Parameters (10 Solutions)

Status: Confirmed Planet
Detected By: Orbital Brightness Modulation, Radial Velocity, Transit

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

Source	Chakrabarty & Sengupta 2019	Ivshina & Winn 2022	Zhang et al. 2018	Stassun et al. 2017	Turner et al. 2016	Johnson et al. 2015	Johnson et al. 2015	von Essen et al. 2014	Collier Cameron et al. 2010	ExoFOP-TESS TOI	Show Candidate Solutions >>	<< Hide Candidate Solutions
T_eq (K)	2781.70±41.10	---	---	---	2723±37	---	---	---	---	2510.78667440973
S (S_⨁)	---	---	---	---	---	---	---	---	---	9392.04710086675
P (days)	1.219870±0.000001	1.21987070±0.00000038	1.21987089±0.00000015	1.21986983±0.00000045	1.21987016±0.00014000	---	---	1.2198675±0.0000011	1.2198669±0.0000012	1.21983821253186±0.00001671784600
R_p (R_⨁)	17.86±0.83	---	---	17.9±0.7	18.82+0.21-0.34	---	---	---	16.780±0.504	18.2179311434236±0.6672307000000
R_p (R_Jup)	1.593±0.074	---	---	1.60±0.06	1.679+0.019-0.030	---	---	---	1.497±0.045	1.62529775284773±0.05952643847446
δ (%)	---	---	---	1.100±0.019	---	---	---	---	1.372	1.216010960429±0.010221993000
T₁₄ (hours)	2.854±0.012	---	---	---	---	2.8512±0.0079	2.8066+0.0175-0.0098	---	---	2.83418044250338±0.00972171400000
T_C (days)	---	2456217.48738±0.00039	2454163.22367±0.00022	---	2452984.82964±0.00030	2456934.77146±0.00059	---	2455507.5222±0.0003	2454163.22373±0.00026	2459883.19878800±0.00020759
b	0.210±0.002	---	---	---	---	0.0840+0.0020-0.0019	0.218+0.011-0.029	---	0.155 +0.100-0.120	---
i (deg)	86.63±0.03	---	---	87.67±1.81	86.2±0.2	88.695+0.031-0.029	86.61+0.46-0.17	87.90±0.93	87.67±1.81	---
a/R_✶	3.571±0.010	---	---	3.81±0.11	---	---	---	---	3.7879 +0.0836-0.0801	---
M_p (M_⨁)	665.2±44.2	---	---	372±369	1042±232	---	---	---	<1303.0	---
M_p (M_Jup)	2.093±0.139	---	---	1.17±1.16	3.28±0.73	---	---	---	<4.1	---
e	---	---	---	0.0	0	---	---	---	---	---
K (m/s)	304±20	---	---	0.000±295.000	---	---	---	---	<590	---
ρ (g/cm³)	0.689±0.074	---	---	---	0.860±0.190	---	---	---	---	---
R_p/R_✶	0.1118±0.0002	---	---	---	0.1143±0.0002	---	---	0.1046±0.0006	0.1066±0.0009	---
a (au)	0.02390±0.00063	---	---	---	0.0259±0.0005	---	---	---	0.02555±0.00017	---
λ (deg)	---	---	---	---	---	---	---	---	251.2±1.0	---

Ancillary Information (2 Unique Files)

+ WASP-33 (2 File Types, 2 Files)

Literature Time Series (2 File Types, 2 Files)

File Type	Data Points	Filter	Reference
Photometric Light Curve	114	Hp (Hipparcos)	Hipparcos and Tycho Catalogs
Radial Velocity Curve	29	Optical Spectra	Collier Cameron et al. 2010