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WASP-18 Overview

WASP-18 B
WASP-18 1.35 R⦿ 6400.00 K
WASP-18 b
1.240 RJup
!
WASP-18 c
Architecture
WASP-18
WASP-18 B
WASP-18
WASP-18 b
WASP-18 c
Other Data
Bibliography 30
Exoplanet Archive Notes 5
WASP-18 B Nearby Data 5
WASP-18 Nearby Data 5
Discovery Data
Host Planet Method Year Reference Disposition
WASP-18 WASP-18 b Transit 2009 Hellier et al. 2009 Confirmed Planet
WASP-18 WASP-18 c Transit Timing Variations 2019 Pearson 2019 Confirmed Planet
WASP-18
  • This reference contains discussion regarding the stellar multiplicity of this system. (Csizmadia et al. 2019)
  • This reference contains discussion regarding the stellar multiplicity of this system. (Mugrauer 2019)
WASP-18 WASP-18 b WASP-18 c
RA
01h37m24.18s
Dec
-45d41m05.09s
Distance
---
Parallax
---
Ecliptic Latitude
-50.44777 deg
Ecliptic Longitude
358.16646 deg
Galactic Latitude
-69.31676 deg
Galactic Longitude
279.72585 deg
Total Proper Motion
---
Proper Motion (RA)
---
Proper Motion (Dec)
---
Photometry
mV
21.5539±0.1916
mTESS
20.0408±0.0831
mJ
16.289±0.097
mH
15.513±0.083
mKs
15.146±0.122
mW1
14.457±0.029
mW2
14.249±0.041
mW3
12.226
mW4
9.012
mGaia
20.916800±0.013484
mB
---
Tools
ExoFOP Target Overview Page
IRSA Finding Chart
Stellar Hosts
RA
01h37m25.07s
Dec
-45d40m40.06s
Distance
123.483+0.371-0.369
pc
Parallax
8.0694300±0.0240807 mas
Ecliptic Latitude
-50.44353 deg
Ecliptic Longitude
358.17603 deg
Galactic Latitude
-69.32147 deg
Galactic Longitude
279.70959 deg
Total Proper Motion
32.5798036±0.0317955 mas/yr
Proper Motion (RA)
25.2428000±0.0303142 mas/yr
Proper Motion (Dec)
20.5972000±0.0338989 mas/yr
Photometry
mV
9.28±0.03
mTESS
8.8287±0.0060
mJ
8.409±0.018
mH
8.231±0.055
mKs
8.131±0.027
mW1
8.075±0.023
mW2
8.123±0.021
mW3
8.079001±0.022000
mW4
7.753±0.196
mGaia
9.166170±0.000236
mB
9.8540±0.2590
Abundances
(Hypatia Catalog)
[Fe/H] 0.20±0.14 dex
[C/H] 0.00±0.02 dex
[O/H] 0.25±0.05 dex
[Na/H] 0.01±0.16 dex
[Mg/H] 0.05±0.10 dex
[Al/H] -0.13±0.10 dex
[Si/H] 0.10±0.04 dex
[Ca/H] 0.24±0.14 dex
[Y/H] 0.22±0.02 dex
Tools
ExoFOP Target Overview Page
IRSA Finding Chart
TOI
Stellar Hosts
Source Cortés-Zuleta et al. 2020 Pearson 2019 TICv8 Shporer et al. 2019 Gaia DR2 Bonomo et al. 2017 Stassun et al. 2017 Salz et al. 2015 Knutson et al. 2014 Mortier et al. 2013 Southworth 2012 Triaud et al. 2010 Southworth 2010 Southworth et al. 2009 Hellier et al. 2009 Michigan Catalog, Vol. 2 Cannon & Pickering 1918 ExoFOP-TESS TOI Show Candidate Solutions >> << Hide Candidate Solutions
Teff
(K)
6432±48 6400
6226.000+162.250-117.399
 6431±48
6462.0073+338.2180-192.0640
 6400±100 6431±48 6400 --- 6526±69 6455±70 6400±100 6400±100 6400±100 6400±100 --- --- 6400
R✶
(R⦿)
1.319+0.061-0.062
 1.23
1.3465800+0.0694628-0.0673965
 1.26±0.04
1.2397299+0.0771153-0.1202520
1.216+0.067-0.054
 1.29±0.05 --- --- 0.81±0.08 1.228±0.043
1.360+0.055-0.041
 1.222±0.043 1.230±0.047 --- --- --- 1.35±0.07
log g
(log10(cm/s2))
4.310+0.036-0.033
 ---
4.2587900+0.1072850-0.0667331
 4.47±0.13 --- --- 4.47±0.13 --- --- 4.73±0.08 4.365±0.027 4.40±0.15 4.363±0.027 4.366±0.026 --- --- --- 4.36583
γ
(km/s)
--- --- --- --- 4.088736632492482±0.558722340700608 --- --- --- --- --- --- --- --- --- 3.1961±0.0033 --- --- ---
v sin i
(km/s)
--- --- --- --- --- 11.0±1.5 --- --- --- --- --- --- --- --- 11.0±1.5 --- --- ---
Metallicity
(dex)
0.107±0.080 [Fe/H] --- 0.1±0.1 [M/H] 0.11±0.08 [Fe/H] --- 0.00±0.09 0.13 [Fe/H] --- 0.11±0.08 [Fe/H] 0.19±0.05 [Fe/H] 0.0±0.1 [Fe/H] 0.0±0.1 [Fe/H] 0.0±0.1 [Fe/H] 0.0±0.1 [Fe/H] --- --- --- ---
ρ✶
(g/cm3)
0.795+0.110-0.089
 ---
0.6928732+0.1862056-0.1349398
 --- --- --- 0.970±0.150 --- --- 0.69±0.06 0.9680±0.0870
0.694+0.061-0.072
 0.9710±0.0870 0.9710±0.0870 --- --- --- ---
M✶
(M⦿)
1.294+0.063-0.061
 1.22
1.200000+0.180540-0.168567
 1.46±0.29 --- 1.25±0.13 1.46±0.29 --- 1.28±0.09 1.23±0.08 1.274±0.060 1.24±0.04 1.256±0.066 1.281±0.069 --- --- --- ---
Age
(Gyr)
1.57+1.40-0.94
 --- --- --- --- 1.00±0.50 --- 0.7 --- ---
0.40+1.10-0.80
 ---
0.50+1.30-1.00
 1.0±1.0 --- --- --- ---
Sp. T
--- --- --- --- --- --- --- F6 IV-V --- --- --- F6 --- --- --- F6 IV/V F8 ---
L✶
(log10(L⦿))
0.428+0.043-0.044
 ---
0.38999311+0.01971080-0.01800694
 ---
0.38281863+0.00224300-0.00225465
 --- --- --- --- --- --- --- --- --- --- --- --- ---
Print
Status
Confirmed Planet
Detected By
Orbital Brightness Modulation, Radial Velocity, Transit Timing Variations, Transit
Tools
Transit Prediction Service
TOI
Transit
Atmospheric Spectroscopy
Source Cortés-Zuleta et al. 2020 Kokori et al. 2023 Ivshina & Winn 2022 Kokori et al. 2022 Pearson 2019 Shporer et al. 2019 Csizmadia et al. 2019 Bonomo et al. 2017 Stassun et al. 2017 Salz et al. 2015 Knutson et al. 2014 Southworth 2012 Triaud et al. 2010 Southworth 2010 Southworth et al. 2009 Hellier et al. 2009 ExoFOP-TESS TOI Show Candidate Solutions >> << Hide Candidate Solutions
ω
(deg)
-85.0+72.0-96.0
 269.0±3.0 --- --- --- 269 257.27±2.13
268.7+2.9-2.7
 --- ---
261.1+5.3-7.4
 ---
-92.1+4.9-4.3
 --- --- -96±10 ---
e
0.00510+0.00700-0.00370
 0.00910±0.00120 --- --- --- 0.0091 0.00850±0.00200 0.00757±0.00100 0.010±0.000 0
0.0068+0.0025-0.0027
 ---
0.00848+0.00085-0.00095
 --- --- 0.0092±0.0028 ---
K
(m/s)
1814+23-24
 --- --- --- ---
1816.6+6.1-6.3
1817.0+1.7-2.0
 1817.3±2.3 1818.3±1.9 ---
1816.6+6.1-6.3
 1816.7±1.9 1816.7±1.9 1816.9±2.0 1818.3±8.0 --- ---
Teq
(K)
2429+77-70
 --- --- --- --- --- --- --- --- 2400 --- 2413±44 --- 2392±51 --- --- 2251
S
(S⨁)
5805+808-639
 --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- 4266.74
P
(days)
0.94145223±0.00000024 0.941452417±0.000000019 0.941452422±0.000000035 0.94145254±0.00000008 0.94124000±0.00000234
0.9414526+0.0000016-0.0000015
 --- 0.94145230±0.00000030 0.941450±0.000001 0.9 --- 0.94145181±0.00000044
0.94145290+0.00000078-0.00000086
 0.94145181±0.00000044 --- 0.94145299±0.00000087 0.9414525±0.0000001
Rp
(R⨁)
13.90±0.89 --- --- --- --- 13.35±0.43 ---
12.40+0.81-0.61
 13.5±0.6 14.6 --- 13.04±0.62
14.20+0.69-0.50
 12.98±0.62 13.06±0.64 13.059±0.639 15.342000±0.801605
Rp
(RJup)
1.240±0.079 --- --- --- --- 1.191±0.038 ---
1.106+0.072-0.054
 1.20±0.05 1.3 --- 1.163±0.055
1.267+0.062-0.045
 1.158±0.055 1.165±0.057 1.165±0.057 1.3687239±0.0715145
δ
(%)
1.041±0.022 --- --- --- ---
0.9439+0.0027-0.0026
 --- --- 0.920±0.016 --- --- ---
0.916+0.020-0.012
 --- --- 0.875±0.021 1.1445000±0.0260648
T14
(hours)
2.21±0.03 --- --- --- --- --- --- --- --- --- --- ---
2.181+0.019-0.015
 --- --- 2.14368±0.01632 2.050±0.036
TC
(days)
2456740.80560±0.00019 2458501.324483±0.000019 2453403.35962±0.00020 2455562.11007±0.00007 ---
2458375.169883+0.000026-0.000025
 --- 2455265.5525±0.0001 --- --- --- ---
2454664.90531+0.00016-0.00017
 --- --- 2454221.48163±0.00038 2460205.3533220±0.0002056
a/R✶
3.48+0.16-0.17
3.562+0.022-0.023
 --- --- 3.5700±0.0155
3.562+0.022-0.023
 --- --- 3.57±0.19 --- ---
3.5778+0.1109-0.1044
3.195+0.095-0.118
3.5778+0.1109-0.1044
3.5780+0.1109-0.1044
 --- ---
b
0.36+0.11-0.18
 --- --- --- ---
0.318+0.018-0.019
 --- --- --- --- --- ---
0.527+0.052-0.046
 --- --- --- ---
Mp
(M⨁)
3242±111 --- --- --- 3314.82 3305 ---
3242+222-229
 3636±480 3241.7
3328+156-159
 3299±108
3213+76-67
 3270±118 3315±121 3314.83±120.77 ---
Mp
(MJup)
10.20±0.35 --- --- --- 10.4295 10.4 ---
10.20+0.70-0.72
 11.44±1.51 10.2
10.47+0.49-0.50
 10.38±0.34
10.11+0.24-0.21
 10.29±0.37 10.43±0.38 10.43±0.38 ---
Mp sin i
(M⨁)
3223±105 --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- ---
Mp sin i
(MJup)
10.14±0.33 --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- ---
i
(deg)
83.5+2.0-1.6
 84.9±0.3 --- --- 85.680±0.279 84.88±0.33 --- 86.0±2.5 80.60±1.20 --- --- 85.0±2.1
80.6+1.1-1.3
 85.0±2.1 85.0±2.1 86.0±2.5 ---
ρ
(g/cm3)
6.6+1.2-1.1
 --- --- --- --- --- ---
9.60+1.80-1.60
 --- 10.3 --- 8.22±1.11 --- 8.830±1.200 8.78±1.20 8.78±1.20 ---
Rp/R✶
0.1018±0.0011 0.09716±0.00014 --- --- 0.0964
0.09716+0.00014-0.00013
 --- --- --- --- --- ---
0.09576+0.00105-0.00063
 --- --- --- ---
a
(au)
0.02024+0.00029-0.00031
 --- --- --- 0.02 0.02087±0.00068 ---
0.02030+0.00069-0.00073
 --- 0.020 --- 0.02043±0.00032
0.02020+0.00024-0.00021
 0.02034±0.00036 0.02047±0.00038 0.02026±0.00068 ---
λ
(deg)
--- --- --- --- --- --- --- --- --- --- --- --- 4±5 --- --- --- ---
Occ. Depth
(%)
--- --- --- --- ---
0.0341+0.0017-0.0018
 --- --- --- --- --- --- --- --- --- --- ---
Print
Status
Confirmed Planet
Controversial
Detected By
Tools
Source Pearson 2019
ω
(deg)
272±13
Mp
(M⨁)
55.2±12.3
Mp
(MJup)
0.174±0.039
e
<0.015
P
(days)
2.1558±0.0064
a
(au)
0.035
Print
Literature Time Series (2 File Types, 8 Files)
File Type Data Points Filter Reference
Photometric Light Curve     169 V (Johnson) Southworth et al. 2009
Photometric Light Curve     141 V (Johnson) Southworth et al. 2009
Photometric Light Curve     140 V (Johnson) Southworth et al. 2009
Photometric Light Curve     93 V (Johnson) Southworth et al. 2009
Photometric Light Curve     86 V (Johnson) Southworth et al. 2009
Photometric Light Curve     7692 Clear, no filter SuperWASP Consortium
Photometric Light Curve     130 Hp (Hipparcos) Hipparcos and Tycho Catalogs
Amateur Light Curve     579 R (Generic) Amateur-Contributed Light Curves
Known Objects
2 Confirmed Planets
2 2MASS Point Source Catalog
Data Files
4 KELT Time Series
1 SuperWASP Time Series
2 Associated Literature Data
Known Objects
2 Confirmed Planets
2 2MASS Point Source Catalog
Data Files
4 KELT Time Series
1 SuperWASP Time Series
2 Associated Literature Data
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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