XO-4 | NASA Exoplanet Archive

Host	Planet	Method	Year	Reference	Disposition
XO-4	XO-4 b	Transit	2010	Southworth 2010	Confirmed Planet

XO-4 Stellar Parameters (10 Solutions)

+

RA: 07h21m33.13s

Dec: +58d16m05.19s

Distance: 272.655+2.914-2.855
pc

Parallax: 3.6392100±0.0385063 mas

Ecliptic Latitude: 35.7488 deg

Ecliptic Longitude: 103.04392 deg

Galactic Latitude: 26.68924 deg

Galactic Longitude: 158.63533 deg

Total Proper Motion: 17.7999868±0.0553590 mas/yr

Proper Motion (RA): -16.9894000±0.0558839 mas/yr

Proper Motion (Dec): 5.3103500±0.0496684 mas/yr

Photometry: m_V
10.814±0.008; m_TESS
10.1653±0.0061; m_J
9.667±0.021; m_H
9.476±0.022; m_Ks
9.406±0.023; m_W1
9.373±0.022; m_W2
9.398±0.021; m_W3
9.378±0.040; m_W4
8.716; m_Gaia
10.513100±0.000383; m_B
11.149±0.111

Abundances (Hypatia Catalog): [Fe/H] -0.01±0.04 dex; [C/H] -0.10±0.09 dex; [O/H] 0.05±0.09 dex; [Na/H] -0.21±0.04 dex; [Mg/H] -0.07±0.07 dex; [Al/H] -0.31±0.06 dex; [Si/H] -0.06±0.05 dex; [Ca/H] 0.05±0.06 dex; [Y/H] 0.05±0.08 dex

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

Source	TICv8	Gaia DR2	Bonomo et al. 2017	Stassun et al. 2017	Knutson et al. 2014	Southworth 2011	Narita et al. 2010	Southworth 2010	McCullough et al. 2008	ExoFOP-TESS TOI	Show Candidate Solutions >>	<< Hide Candidate Solutions
T_eff (K)	6304.000+103.638-175.444	6526.68+292.31-289.68	6400±70	6397±70	---	6397±70	---	6397±70	5700±70	6304.0±139.5
Metallicity (dex)	-0.030±0.100 [M/H]	---	-0.040±0.030 [Fe/H]	-0.04 [Fe/H]	-0.030±0.080 [Fe/H]	-0.04±0.05 [Fe/H]	---	-0.04±0.05 [Fe/H]	-0.04±0.03 [Fe/H]	---
Age (Gyr)	---	---	2.10±0.60	---	---	2.7+1.1-0.6	---	2.7±0.6	2.1±0.6	---
M_✶ (M_⦿)	1.238000+0.196529-0.175509	---	1.320±0.020	1.10±0.22	1.32±0.02	1.285+0.118-0.045	---	1.285+0.070-0.043	1.32±0.02	---
R_✶ (R_⦿)	1.6225000+0.0982683-0.0828824	1.4489682+0.1377220-0.1215630	1.560±0.050	1.45±0.09	---	1.531+0.386-0.069	---	1.530+0.362-0.070	1.55±0.05	1.62±0.09
log g (log₁₀(cm/s²))	4.1104200+0.0590739-0.1211150	---	---	4.18±0.03	---	4.177+0.034-0.172	---	4.178+0.034-0.169	4.18	4.11±0.09
Sp. T	---	---	---	---	---	---	---	---	F5 V	---
ρ_✶ (g/cm³)	0.4086283+0.1306823-0.0726957	---	---	0.50±0.02	---	0.504+0.065-0.225	---	0.506+0.065-0.225	---	---
v sin i (km/s)	---	---	8.80±0.50	---	---	---	8.9±0.5	---	---	---
L_✶ (log₁₀(L_⦿))	0.5735310+0.0231907-0.0244879	0.53558172+0.00674409-0.00685047	---	---	---	---	---	---	---	---
γ (km/s)	---	1.6357566711280285±0.5285106162674401	---	---	---	---	---	---	---	---

Print

XO-4 b Planetary Parameters (10 Solutions)

Status: Confirmed Planet
Detected By: Radial Velocity, Transit

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

Source	Stassun et al. 2017	Kokori et al. 2023	Ivshina & Winn 2022	Kokori et al. 2022	Bonomo et al. 2017	Knutson et al. 2014	Southworth 2011	Narita et al. 2010	Southworth 2010	ExoFOP-TESS TOI	Show Candidate Solutions >>	<< Hide Candidate Solutions
P (days)	4.125080±0.000004	4.12506679±0.00000048	4.1250672±0.0000020	4.1250679±0.0000006	4.1250823±0.0000039	---	4.1250828±0.0000040	4.1250828±0.0000040	4.12502±0.00002	4.1250429±0.0000093
T_C (days)	---	2456878.47303±0.00023	2455933.83257±0.00085	2455682.20389±0.00023	2454485.93307±0.00036	---	---	2454485.93323±0.00039	---	2460339.400472±0.001473
a/R_✶	7.68±0.11	7.68±0.11	---	---	---	---	7.6923+0.3141-1.3752	7.68±0.11	7.6923+0.3141-1.3752	---
T_eq (K)	---	---	---	---	---	---	1630+170-40	---	1630+169-36	1608
M_p (M_⨁)	451±60	---	---	---	512.3+8.6-8.9	495.5+16.5-15.3	491.7+35.3-21.6	565.71±25.43	483.4+50.9-48.9	---
M_p (M_Jup)	1.42±0.19	---	---	---	1.612+0.027-0.028	1.559+0.052-0.048	1.547+0.111-0.068	1.78±0.08	1.521+0.160-0.154	---
i (deg)	88.80±0.60	88.8±0.6	---	---	88.7±1.1	---	89.9+0.1-3.9	88.8±0.6	89.9+0.1-3.9	---
ρ (g/cm³)	---	---	---	---	0.830+0.100-0.088	---	0.900+0.150-0.490	---	0.94430+0.17290-0.53200	---
R_p (R_⨁)	14.0±0.9	---	---	---	15.02±0.56	---	14.43+4.32-0.71	14.91±0.56	14.5+4.3-0.7	15.347900±0.884007
R_p (R_Jup)	1.25±0.08	---	---	---	1.340±0.050	---	1.287+0.385-0.063	1.33±0.05	1.29+0.38-0.06	1.3692503±0.0788660
K (m/s)	168.6±6.2	---	---	---	169.6+2.3-2.4	163.7±4.7	165.8±6.2	168.6±6.2	163±16	---
a (au)	---	---	---	---	0.05524+0.00027-0.00028	---	0.05474+0.00163-0.00064	---	0.05475+0.00097-0.00062	---
e	0.0	---	---	---	<0.0039	0.0020+0.0120-0.0020	---	0	---	---
R_p/R_✶	---	0.0881±0.0007	---	---	---	---	---	0.0881±0.0007	---	---
λ (deg)	---	---	---	---	---	---	---	-46.7 +8.1-6.1	---	---
S (S_⨁)	---	---	---	---	---	---	---	---	---	1112.27
δ (%)	0.780±0.012	---	---	---	---	---	---	---	---	0.8804000±0.0209761
T₁₄ (hours)	---	---	---	---	---	---	---	---	---	4.454±0.056
ω (deg)	---	---	---	---	---	240+39-160	---	---	---	---

Print

Ancillary Information (12 Unique Files)

+

+ XO-4 (3 File Types, 12 Files)

Literature Time Series (3 File Types, 12 Files)

File Type	Data Points	Filter	Reference
Photometric Light Curve	1830	Clear, no filter	SuperWASP Consortium
Radial Velocity Curve	9	Optical Spectra	McCullough et al. 2008
Amateur Light Curve	178	B (Generic)	Amateur-Contributed Light Curves
Amateur Light Curve	274	Clear, no filter	Amateur-Contributed Light Curves
Amateur Light Curve	375	R (Generic)	Amateur-Contributed Light Curves
Amateur Light Curve	343	R (Generic)	Amateur-Contributed Light Curves
Amateur Light Curve	302	R (Generic)	Amateur-Contributed Light Curves
Amateur Light Curve	270	R (Generic)	Amateur-Contributed Light Curves
Amateur Light Curve	179	R (Generic)	Amateur-Contributed Light Curves
Amateur Light Curve	105	R (Generic)	Amateur-Contributed Light Curves
Amateur Light Curve	81	R (Generic)	Amateur-Contributed Light Curves
Amateur Light Curve	178	V (Generic)	Amateur-Contributed Light Curves