HD 156668 Overview
HD 156668
0.80
R⦿
4813.00
K
HD 156668 b
HD 156668 c
- Architecture
- HD 156668
- HD 156668
Discovery Data
| Host | Planet | Orbital Separation | Planet Size | Method | Year | Reference | Disposition |
|---|---|---|---|---|---|---|---|
| HD 156668 | HD 156668 b | 4.65 d | > 4.15 M⨁ | Radial Velocity | 2010 | Howard et al. 2011 | Confirmed Planet |
| HD 156668 | HD 156668 c | 811.3 d | > 31.5 M⨁ | Radial Velocity | 2021 | Rosenthal et al. 2021 | Confirmed Planet |
HD 156668 b
- Time of Periastron/Transit Midpoint definition ambiguity in ref.; value omitted. (Kammer et al. 2014)
- RA
- 17h17m40.40s
- Dec
- +29d13m41.38s
- Distance
-
24.3323+0.0165-0.0166pc
- Parallax
- 41.0687000±0.0277859 mas
- Ecliptic Latitude
- 52.11322 deg
- Ecliptic Longitude
- 254.86911 deg
- Galactic Latitude
- 32.1149 deg
- Galactic Longitude
- 51.96923 deg
- Total Proper Motion
- 228.6121060±0.0497899 mas/yr
- Proper Motion (RA)
- -72.6271000±0.0413092 mas/yr
- Proper Motion (Dec)
- 216.7690000±0.0506533 mas/yr
- Photometry
-
mV8.43±0.03
-
mTESS7.4911±0.0060
-
mJ6.593±0.026
-
mH6.117±0.024
-
mKs6.004±0.020
-
mW15.985±0.128
-
mW25.975±0.041
-
mW36.015±0.015
-
mW45.962±0.042
-
mGaia8.107530±0.000304
-
mB9.317±0.033
-
Abundances
(Hypatia Catalog) -
[Fe/H] -0.03±0.04 dex
-
[C/H] 0.11±0.09 dex
-
[O/H] -0.16±0.03 dex
-
[Mg/H] 0.07±0.04 dex
-
[Al/H] 0.18±0.06 dex
-
[Si/H] 0.08±0.12 dex
-
[Ca/H] 0.02±0.02 dex
-
[Y/H] -0.18±0.08 dex
-
[BaII/H] -0.20±0.19 dex
| Source | Rosenthal et al. 2021 | TICv8 | Gaia DR2 | Turnbull 2015 | Howard et al. 2011 | Wright et al. 2004 | Gray et al. 2003 | Cannon & Pickering 1918 |
|---|---|---|---|---|---|---|---|---|
|
S Index
|
--- | --- | --- | --- | --- | 0.194±0.025 | --- | --- |
|
Teff
(K)
|
4903.6871576399999±59.6399475505500 |
4849.920+116.103-89.953
|
4831.5+55.0-61.5
|
4813 | 4850±88 | --- | --- | --- |
|
L✶
(log10(L⦿))
|
--- |
-0.5402456+0.0111407-0.0133572
|
-0.53743383+0.00049845-0.00049902
|
-0.509 +0.100-0.130
|
0.230±0.018 | --- | --- | --- |
|
M✶
(M⦿)
|
0.78516704481099997±0.02387628065255000 |
0.7900000+0.0880730-0.0963432
|
--- | 0.74 | 0.772±0.020 | --- | --- | --- |
|
R✶
(R⦿)
|
0.7745276665009999±0.0121461551612750 |
0.7604320+0.0367704-0.0486266
|
0.76872635+0.01995020-0.01720740
|
0.80 | 0.720±0.013 | --- | --- | --- |
|
Sp. T
|
--- | --- | --- | K2 | --- | --- | K3 V | K2 |
|
γ
(km/s)
|
--- | --- | -44.573345753493584±0.166113454046484 | --- | --- | --- | --- | --- |
|
Metallicity
(dex)
|
0.049261635137599985±0.055960162716649997 [Fe/H] | -0.0511312±0.0470871 [M/H] | --- | --- | 0.05±0.06 [Fe/H] | --- | --- | --- |
|
v sin i
(km/s)
|
--- | --- | --- | --- | 0.50±1.0 | --- | --- | --- |
|
Age
(Gyr)
|
--- | --- | --- | --- | 8.6±4.8 | --- | --- | --- |
|
log g
(log10(cm/s2))
|
4.55115135292000±0.01808741923925 |
4.5735700+0.0882860-0.0649929
|
--- | --- | 4.598±0.12 | --- | --- | --- |
|
ρ✶
(g/cm3)
|
--- |
2.5328516+0.6644328-0.4546196
|
--- | --- | --- | --- | --- | --- |
- Status
- Confirmed Planet
- Detected By
- Radial Velocity
- Tools
- Planetary Systems
| Source | Howard et al. 2011 | Rosenthal et al. 2021 | Kammer et al. 2014 |
|---|---|---|---|
|
ω
(deg)
|
--- |
36+21-25
|
--- |
|
Mp sin i
(M⨁)
|
4.15±0.58 | 5.02±0.41 | 4.15±0.58 |
|
Mp sin i
(MJup)
|
0.013±0.002 | 0.0158±0.0013 | 0.0131±0.0018 |
|
e
|
0.0 | 0.235±0.072 | 0.22±0.08 |
|
P
(days)
|
4.6455±0.0011 |
4.64275+0.00020-0.00022
|
4.64260±0.00078 |
|
K
(m/s)
|
1.89±0.26 | 2.34±0.20 | --- |
|
a
(au)
|
0.0500±0.0007 |
0.05024+0.00051-0.00052
|
--- |
|
TC
(days)
|
--- |
2455201.60±0.15
(BJD)
|
--- |
|
Tp
(days)
|
2454718.57±0.11 | --- | --- |
- Status
- Confirmed Planet
- Detected By
- Radial Velocity
- Tools
- Planetary Systems
| Source | Rosenthal et al. 2021 |
|---|---|
|
ω
(deg)
|
-10.886202+52.712136-42.398892
|
|
Mp sin i
(M⨁)
|
31.50+2.51-2.45
|
|
Mp sin i
(MJup)
|
0.09910+0.00790-0.00770
|
|
e
|
0.0890+0.0840-0.0610
|
|
P
(days)
|
811.3+5.2-5.3
|
|
K
(m/s)
|
2.56±0.20 |
|
a
(au)
|
1.570±0.017 |
|
TC
(days)
|
2455890+25-19
(BJD)
|
Literature Time Series
(1 File Type, 1 File)
| File Type | Data Points | Filter | Reference |
|---|---|---|---|
| Photometric Light Curve | 145 | Hp (Hipparcos) | Hipparcos and Tycho Catalogs |
- Known Objects
- 2 Confirmed Planets
- 2 2MASS Point Source Catalog
- Data Files
- 4 KELT Time Series
- 1 SuperWASP Time Series
- 2 Associated Literature Data
-
The California Legacy Survey. I. A Catalog of 178 Planets from Precision Radial Velocity Monitoring of 719 Nearby Stars over Three Decades
Rosenthal et al. 2021 | Reference Overview -
The Revised TESS Input Catalog and Candidate Target List
TICv8 | Reference Overview -
Gaia Data Release 2
Gaia DR2 | Reference Overview -
ExoCat-1: The Nearby Stellar Systems Catalog for Exoplanet Imaging Missions
Turnbull 2015 | Reference Overview -
A Spitzer Search for Transits of Radial Velocity Detected Super-Earths
Kammer et al. 2014 | Reference Overview -
All WISE Data Release
Cutri et al. 2014 | Reference Overview -
The NASA-UC Eta-Earth Program: II. A Planet Orbiting HD 156668with a Minimum Mass of Four Earth Masses
Howard et al. 2011 | Reference Overview -
Chromospheric Ca II Emission in Nearby F, G, K, and M Stars
Wright et al. 2004 | Reference Overview -
Contributions to the Nearby Stars (NStars) Project: Spectroscopy of Stars Earlier than M0 within 40 parsecs: The Northern Sample I
Gray et al. 2003 | Reference Overview -
2MASS All-Sky Catalog of Point Sources
2MASS Point Source Catalog | Reference Overview -
The Tycho-2 catalog of the 2.5 million brightest stars
The Tycho-2 Catalog | Reference Overview -
The Hipparcos and Tycho Catalogs
Hipparcos and Tycho Catalogs | Reference Overview -
The Henry Draper catalogue 0h, 1h, 2h, and 3h
Cannon & Pickering 1918 | Reference Overview
- System
- Star
- Confirmed
- Candidate
- False Positive Planet
- Controversial
- False Positive
- Aliases
- Data Access
- Transit Prediction Service
- Time Series
- Kepler | K2
- External Link
- Search
- Browse
- Download
