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HD 219666 Overview

HD 219666 1.03 R⦿ 5527.00 K
HD 219666 b
0.437 RJup
Architecture
HD 219666
HD 219666
HD 219666 b
Other Data
Bibliography 10
Nearby Data 4
Discovery Data
Host Planet Method Year Reference Disposition
HD 219666 HD 219666 b Transit 2018 Esposito et al. 2019 Confirmed Planet
RA
23h18m14.22s
Dec
-56d54m14.35s
Distance
94.1719+0.2518-0.2506
pc
Parallax
10.5900000±0.0281131 mas
Ecliptic Latitude
-46.82486 deg
Ecliptic Longitude
321.7008 deg
Galactic Latitude
-55.92883 deg
Galactic Longitude
325.60907 deg
Total Proper Motion
314.5657803±0.0388329 mas/yr
Proper Motion (RA)
313.9180000±0.0388128 mas/yr
Proper Motion (Dec)
-20.1772000±0.0434263 mas/yr
Photometry
mV
9.809±0.003
mTESS
9.179±0.006
mJ
8.557±0.020
mH
8.254±0.042
mKs
8.158±0.033
mW1
8.080±0.023
mW2
8.138±0.020
mW3
8.100±0.021
mW4
8.250±0.288
mGaia
9.649560±0.000219
mB
10.596±0.037
Tools
ExoFOP Target Overview Page
IRSA Finding Chart
TOI
Stellar Hosts
Source Murphy et al. 2025 Oddo et al. 2023 TICv8 Esposito et al. 2019 Gaia DR2 ExoFOP-TESS TOI Show Candidate Solutions >> << Hide Candidate Solutions
Teff
(K)
5540±63 5527±65
5527.000+103.188-149.639
 5527±65
5493.5+326.5-114.5
 5586±187
Metallicity
(dex)
--- 0.04±0.04 [Fe/H] --- 0.04±0.04 [Fe/H] --- ---
Age
(Gyr)
--- 10.0±2.0 --- 10±2 --- ---
M✶
(M⦿)
1.02±0.10 0.92±0.03
0.97000000+0.15527900-0.08659840
 0.92±0.03 --- ---
R✶
(R⦿)
1.059±0.008 1.03±0.03
1.0516800+0.0651176-0.0447819
 1.03±0.03
1.0691907+0.0459909-0.1165975
 1.05±0.05
CAII LOG RHK
--- -5.07±0.03 --- --- --- ---
log g
(log10(cm/s2))
--- 4.40±0.11
4.3810700+0.0775376-0.0826475
 4.40±0.11 --- 4.367630±0.270247
Sp. T
--- G5 V --- --- --- ---
γ
(km/s)
--- --- --- -20.0976±0.0004 -19.956535824233089±0.307659426052417 ---
v sin i
(km/s)
--- --- --- 2.2±0.8 --- ---
L✶
(log10(L⦿))
--- ---
-0.03158131+0.01031588-0.00981525
 ---
-0.02779837+0.00188799-0.00189624
 ---
ρ✶
(g/cm3)
--- ---
1.1756781+0.2958365-0.2290347
 --- --- ---
Print
Status
Confirmed Planet
Detected By
Radial Velocity, Transit
Tools
Transit Prediction Service
TOI
Transit
Atmospheric Spectroscopy
Source Murphy et al. 2025 Oddo et al. 2023 Kokori et al. 2023 Patel & Espinoza 2022 Esposito et al. 2019 ExoFOP-TESS TOI Show Candidate Solutions >> << Hide Candidate Solutions
a/R✶
13.25±0.46 21.747±2.023 13.3±0.4
14.56+3.10-1.73
 13.27±0.39 ---
Teq
(K)
1076±22 838±40 --- --- 1073±20 788
ω
(deg)
0.0±48.0 --- --- --- --- ---
Mp
(M⨁)
17.6±1.2 --- --- --- 16.6±1.3 ---
Mp
(MJup)
0.055±0.003 --- --- --- 0.0522±0.0041 ---
e
0.05±0.04 --- --- --- 0 ---
i
(deg)
86.42±0.23 88.938±0.505 86.38±0.15 --- 86.38±0.15 ---
P
(days)
6.034468±0.000004 6.04345±0.00001 6.034468±0.000014
6.0357970+0.0003070-0.0000160
6.03607+0.00064-0.00063
 6.0344667±0.0000059
Rp
(R⨁)
4.898±0.060 4.24±0.16 --- --- 4.71±0.17 4.440290±0.243975
Rp
(RJup)
0.437±0.006 0.378±0.014 --- --- 0.420±0.015 0.3961368±0.0217660
Rp/R✶
0.0421±0.0006 0.0376±0.0009 0.0419±0.0008 0.0397±0.0017 0.04192±0.00083 ---
K
(m/s)
6.07±0.32 --- --- --- 6.17±0.46 ---
TC
(days)
2459083.5107±0.0001 2459083.5109±0.0011 2458600.75321±0.00081
2459083.67430+0.03780-0.00190
 2458329.1996±0.0012 2460175.7491180±0.0010809
b
--- 0.402±0.193 ---
0.805+0.048-0.104
0.838+0.012-0.013
 ---
ρ
(g/cm3)
--- --- --- ---
0.87+0.12-0.11
 ---
a
(au)
--- 0.104±0.005 --- --- 0.06356±0.00265 ---
T14
(hours)
--- 2.028±0.194 --- --- 2.158±0.034 1.890±0.109
S
(S⨁)
--- --- --- --- --- 64.2648
δ
(%)
--- 0.1414±0.0068 --- --- --- 0.18000000±0.00500931
Print
Known Objects
1 Confirmed Planets
1 2MASS Point Source Catalog
Data Files
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
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