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WASP-12 Overview

WASP-12 1.69 R⦿ 6265.00 K
WASP-12 b
1.965 RJup
WASP-12 B 0.70 R⦿ 4111.00 K
WASP-12 C

WASP-12 Architecture & Discovery Information

Name Orbital Separation Planet Size Method Year Reference Disposition
WASP-12
WASP-12 b 1.09 d 22.03 R⨁ Transit 2008 Hebb et al. 2009 Confirmed Planet
WASP-12 B
WASP-12 C
WASP-12
  • This reference contains discussion regarding the stellar multiplicity of this system. (Bergfors et al. 2011)
  • This reference contains discussion regarding the stellar multiplicity of this system. (Bergfors et al. 2013)
  • This reference contains discussion regarding the stellar multiplicity of this system. (Bechter et al. 2014)
  • This reference contains discussion regarding the stellar multiplicity of this system. (Ngo et al. 2015)
WASP-12 b
  • The as-published mid-transit points were corrected from 240xxxx.xxx to 245xxxx.xxx. (Öztürk & Erdem 2019)
  • Units for radial velocity semi-amplitude given incorrectly in ref. Literature Value: 204.4±2.4 km/s. Exoplanet Archive Value: 204.4±2.4 m/s. (Albrecht et al. 2012)
  • Orbital period provided by authors via private communication. See Literature Value: 1.09142±3.3E-07. Exoplanet Archive Value: 1.09142245±0.00000033. (Stassun et al. 2017)
  • Orbital period and mid-transit time updated by author via private communication. (Sodickson & Grunblatt 2025)
RA
06h30m32.79s
Dec
+29d40m20.16s
Distance
427.246+6.068-5.903
pc
Parallax
2.3122400±0.0325363 mas
Ecliptic Latitude
6.40969 deg
Ecliptic Longitude
96.66845 deg
Galactic Latitude
8.93638 deg
Galactic Longitude
184.08312 deg
Total Proper Motion
7.1348482±0.0582966 mas/yr
Proper Motion (RA)
-1.5798900±0.0675524 mas/yr
Proper Motion (Dec)
-6.9577300±0.0577792 mas/yr
Photometry
mV
11.569±0.023
mTESS
11.0967±0.0126
mJ
10.477±0.021
mH
10.228±0.022
mKs
10.188±0.020
mW1
10.111±0.022
mW2
10.109±0.021
mW3
10.121±0.073
mW4
8.32
mGaia
11.499900±0.000538
mB
12.139±0.334
Abundances
(Hypatia Catalog)
[Fe/H] 0.21±0.16 dex
[C/H] 0.11±0.05 dex
[O/H] 0.15±0.12 dex
[Na/H] 0.06±0.19 dex
[Mg/H] 0.20±0.01 dex
[Al/H] 0.06±0.05 dex
[Si/H] 0.21±0.06 dex
[Ca/H] 0.25±0.05 dex
[Y/H] 0.38±0.08 dex
Tools
Planetary Systems
ExoFOP Target Overview Page
IRSA Finding Chart
TOI
Stellar Hosts
Source Leonardi et al. 2024 TICv8 Chakrabarty & Sengupta 2019 Öztürk & Erdem 2019 Gaia DR2 Bonomo et al. 2017 Stassun et al. 2017 Collins et al. 2017 Turner et al. 2016 Knutson et al. 2014 Mortier et al. 2013 Southworth 2012 Albrecht et al. 2012 Hebb et al. 2009 ExoFOP
Teff
(K)
6265±50
6154.000+105.979-105.385
 6360±140
6300+200-100
6269.3335+604.0870-408.3330
 6250±100 6300±150
6360+130-140
 6300 --- 6313±52 6250±100 --- 6300±200 6154.000±105.682
Metallicity
(dex)
0.12±0.07 [Fe/H] 0.21±0.10 [M/H] ---
0.30+0.05-0.15
[Fe/H] 		--- 0.32±0.12 0.30 [Fe/H]
0.33+0.14-0.17
[Fe/H] 		0.30 [Fe/H] 0.070±0.070 [Fe/H] 0.21±0.04 [Fe/H] 0.32±0.12 [Fe/H] --- --- ---
v sin i
(km/s)
<1.9 --- --- --- --- 2.2±1.5 --- --- --- --- --- ---
1.6+0.8-0.4
 <2.2±1.5 ---
Age
(Gyr)
3.05±0.32 --- --- --- ---
2.00+0.70-2.00
 --- --- --- --- ---
2.0+0.8-2.7
 --- --- ---
ρ✶
(g/cm3)
0.386±0.014
0.3080837+0.0813117-0.0551007
 --- --- --- --- 0.42±0.07
0.446+0.015-0.014
 --- --- 0.22±0.02 0.458±0.023 --- --- ---
M✶
(M⦿)
1.325+0.026-0.018
1.170000+0.183504-0.137682
 1.434±0.110 1.35±0.14 --- 1.38±0.18 1.20±0.45
1.434+0.110-0.090
 --- 1.38±0.19 1.26±0.10 1.38±0.19 --- 1.35±0.14 ---
R✶
(R⦿)
1.690+0.019-0.018
1.7494200+0.0680613-0.0942603
 1.657±0.046 1.57±0.07
1.5710118+0.2265290-0.2640090
 1.619±0.076 1.59±0.18
1.657+0.046-0.044
 --- --- 1.21±0.21 1.619±0.079 --- 1.57±0.07 1.74942004680634±0.08116080000000
log g
(log10(cm/s2))
4.11±0.11
4.0204600+0.0778017-0.0828036
 --- 4.17±0.03 --- --- 4.38±0.10
4.157+0.013-0.012
 4.38 --- 4.37±0.12 4.159±0.024 --- --- 4.0204600±0.0803026
L✶
(log10(L⦿))
---
0.5971137+0.0277900-0.0250514
 --- ---
0.53593909+0.00943127-0.00964064
 --- ---
0.607+0.054-0.061
 --- --- --- --- --- --- ---
γ
(km/s)
--- --- --- --- 18.746578618017317±0.647284715650036 --- --- --- --- --- --- --- --- 19.0845±0.002 ---
Print
Status
Confirmed Planet
Detected By
Orbital Brightness Modulation, Radial Velocity, Transit
Tools
Planetary Systems
Transit Prediction Service
TOI
Transit
NExoList: JWST
Atmospheric Spectroscopy
Source Leonardi et al. 2024 Sodickson & Grunblatt 2025 Kokori et al. 2023 Ivshina & Winn 2022 Kokori et al. 2022 Chakrabarty & Sengupta 2019 Öztürk & Erdem 2019 Bonomo et al. 2017 Stassun et al. 2017 Collins et al. 2017 Barstow et al. 2017 Turner et al. 2016 Maciejewski et al. 2016 Sing et al. 2016 Knutson et al. 2014 Southworth 2012 Albrecht et al. 2012 Hebb et al. 2009 ExoFOP
a/R✶
--- --- 3.04±0.03 --- ---
3.0000+0.0160-0.0019
2.933+0.163-0.147
 --- 2.98±0.15
3.039+0.034-0.033
 --- --- --- --- ---
3.0675+0.0497-0.0482
 --- --- ---
Teq
(K)
--- --- --- --- --- 2592.6±57.2 2601±18 --- ---
2580+58-62
 2530 2483±79 --- 2510 --- 2523±45 --- --- 2428.54087085427
Mp
(M⨁)
--- --- --- --- --- 465.6±25.1 448±32 442±38 416±105
467.2+24.2-21.9
 --- 639±44 --- 445 442±41 454±44 ---
448 +32-312
 ---
Mp
(MJup)
--- --- --- --- --- 1.465±0.079 1.41±0.10 1.39±0.12 1.31±0.33
1.470+0.076-0.069
 --- 2.01±0.14 --- 1.40 1.39±0.13 1.43±0.14 --- 1.41±0.10 ---
i
(deg)
81.80+0.29-0.27
 ---
83.4+0.7-0.6
 --- --- 83.52±0.03 81.92±1.51 83.3±1.1 82.50±0.75
83.37+0.72-0.64
 ---
82.96+0.50-0.44
 --- --- --- 83.3±1.1 ---
83.1 +1.4-1.1
 ---
P
(days)
1.091418901±0.000000018 1.0914186656877711±0.0000000165911214 1.091419179±0.000000043 1.091419108±0.000000055 1.09141964±0.00000004 1.09142000000±0.00000014432 1.0914199±0.0000002 1.09142090±0.00000020 1.09142245±0.00000033 1.09142030±0.00000014 --- 1.09142119±0.00000021 1.09142162±0.00000021 1.09 --- 1.0914222±0.0000011 --- 1.091423±0.000003 1.09143044695785±0.00000021365278
ρ
(g/cm3)
--- --- --- --- --- 0.2670±0.0288 0.311±0.051
0.283+0.054-0.044
 ---
0.266+0.015-0.014
 --- 0.434±0.065 --- --- --- 0.293±0.026 ---
0.24 +0.03-0.02
 ---
Rp
(R⨁)
22.03+0.99-0.98
 --- --- --- --- 21.71±0.63 20.39±1.59 20.46±1.02 20.4±2.4
21.30+0.64-0.62
 --- 20.85±1.01 --- 19.4 --- 20.46±1.05 --- 20.1±1 22.6154555074133±1.0501168000000
Rp
(RJup)
1.965+0.088-0.087
 --- --- --- --- 1.937±0.056 1.819±0.142 1.825±0.091 1.82±0.21
1.900+0.057-0.055
 --- 1.860±0.090 --- 1.73 --- 1.825±0.094 --- 1.79±0.09 2.01761927446385±0.09368530717517
K
(m/s)
--- --- --- --- --- 226.4±4.1 ---
219.9+2.2-2.1
 226.0±4.0 226.4±4.1 --- --- --- --- 220.2±3.1 226±4 204.4±2.4 --- ---
a
(au)
0.0234±0.0010 --- --- --- --- 0.02320±0.00064 ---
0.02312+0.00094-0.00100
 ---
0.02340+0.00056-0.00050
 --- 0.0235±0.0011 --- --- --- 0.02309±0.00101 --- 0.0229±0.004 ---
TC
(days)
2457607.519305±0.000032
(BJD-TDB)
2459550.2431494649500±0.0000444675827
(BJD)
2457036.706177±0.000055
(BJD-TDB)
2457010.512173±0.000070
(BJD-TDB)
2456594.68160±0.00004
(BJD-TDB)
--- 2454508.97824±0.00027
(BJD-TDB)
2454508.97718±0.00022
(BJD-TDB)
--- 2456176.66825800±0.00007765
(BJD-TDB)
--- 2455147.45820±0.00013
(BJD)
2454508.97696±0.00016
(BJD-TDB)
--- --- --- 2454508.97605±0.00146
(BJD-TDB)
2454508.9761±0.0002
(BJD)
2458842.99715900±0.00005596
(BJD)
e
--- --- --- --- --- --- 0 <0.020 0.05±0.01 0 --- 0.0447±0.0043 --- ---
0.037+0.014-0.015
 --- --- 0.049±0.015 ---
Rp/R✶
--- --- 0.1178±0.0005 --- --- 0.1170±0.0002 0.119±0.004 --- ---
0.11785+0.00053-0.00054
 --- 0.1173±0.0005 --- --- --- --- 0.1119±0.0020 --- ---
ω
(deg)
--- --- --- --- --- --- --- --- --- --- --- --- --- ---
272.7+2.4-1.3
 --- ---
-74 +13-10
 ---
b
0.424+0.012-0.013
 --- --- --- --- 0.3390±0.0017 --- --- ---
0.351+0.030-0.034
 --- --- --- --- --- --- --- --- ---
Mp sin i
(M⨁)
--- --- --- --- --- --- --- --- ---
464.0+23.8-21.6
 --- --- --- --- --- --- --- --- ---
Mp sin i
(MJup)
--- --- --- --- --- --- --- --- ---
1.460+0.075-0.068
 --- --- --- --- --- --- --- --- ---
δ
(%)
--- --- --- --- --- --- --- --- 1.400±0.016 1.389±0.013 --- --- --- --- --- --- --- 1.38±0.02 1.53777920503756±0.00387908800000
T14
(hours)
3.0010±0.0043 --- --- --- ---
3.0408+0.0022-0.0120
 --- --- --- 2.9959±0.0106 --- --- --- --- --- --- 3.001±0.037 2.928±0.024 3.05123003899773±0.00755956700000
λ
(deg)
--- --- --- --- --- --- --- --- --- --- --- --- --- --- --- ---
59 +15-20
 --- ---
S
(S⨁)
--- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- 8220.58395128002
Print
RA
06h30m32.53s
Dec
+29d40m30.10s
Distance
2112.16+1385.45-767.01
pc
Parallax
0.311328±0.334641 mas
Ecliptic Latitude
6.4124 deg
Ecliptic Longitude
96.66735 deg
Galactic Latitude
8.93675 deg
Galactic Longitude
184.08019 deg
Total Proper Motion
0.75550170±0.58994780 mas/yr
Proper Motion (RA)
-0.03189860±0.68949600 mas/yr
Proper Motion (Dec)
0.7548280±0.5897550 mas/yr
Photometry
mV
19.8676±0.1115
mTESS
18.4309±0.0147
mJ
16.859±0.184
mH
16.245±0.255
mKs
16.123
mW1
---
mW2
---
mW3
---
mW4
---
mGaia
19.290300±0.005679
mB
---
Tools
Planetary Systems
ExoFOP Target Overview Page
IRSA Finding Chart
Stellar Hosts
Source TICv8
Teff
(K)
4111.0±223.0
L✶
(log10(L⦿))
-0.8920520
ρ✶
(g/cm3)
2.5653763
M✶
(M⦿)
0.64
R✶
(R⦿)
0.705881
log g
(log10(cm/s2))
4.54678
Print
RA
---
Dec
---
Distance
---
Parallax
---
Ecliptic Latitude
---
Ecliptic Longitude
---
Galactic Latitude
---
Galactic Longitude
---
Total Proper Motion
---
Proper Motion (RA)
---
Proper Motion (Dec)
---
Photometry
mV
---
mTESS
---
mJ
---
mH
---
mKs
---
mW1
---
mW2
---
mW3
---
mW4
---
mGaia
---
mB
---
Tools
Planetary Systems
Stellar Hosts
Literature Time Series (3 File Types, 9 Files)
File Type Data Points Filter Reference
Photometric Light Curve     5435 Clear, no filter SuperWASP Consortium
Radial Velocity Curve     29 Optical Spectra Husnoo et al. 2010
Radial Velocity Curve     21 Optical Spectra Hebb et al. 2009
Amateur Light Curve     233 Clear, no filter Amateur-Contributed Light Curves
Amateur Light Curve     213 Clear, no filter Amateur-Contributed Light Curves
Amateur Light Curve     156 R (Generic) Amateur-Contributed Light Curves
Amateur Light Curve     116 R (Generic) Amateur-Contributed Light Curves
Amateur Light Curve     82 R (Generic) Amateur-Contributed Light Curves
Amateur Light Curve     57 R (Generic) Amateur-Contributed Light Curves
Known Objects
1 Confirmed Planets
5 2MASS Point Source Catalog
Data Files
4 KELT Time Series
1 SuperWASP Time Series
1 Associated Literature Data
Known Objects
1 Confirmed Planets
5 2MASS Point Source Catalog
Data Files
4 KELT Time Series
1 SuperWASP Time Series
1 Associated Literature Data
Known Objects
1 Confirmed Planets
5 2MASS Point Source Catalog
Data Files
4 KELT Time Series
1 SuperWASP Time Series
1 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
  • Search
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