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HD 154857 Overview

HD 154857 2.30 R⦿ 5589.00 K
HD 154857 b
HD 154857 c
Architecture
HD 154857
HD 154857
HD 154857 b
HD 154857 c
Other Data
Bibliography 17
Nearby Data 4
Discovery Data
Host Planet Method Year Reference Disposition
HD 154857 HD 154857 b Radial Velocity 2004 McCarthy et al. 2004 Confirmed Planet
HD 154857 HD 154857 c Radial Velocity 2014 Wittenmyer et al. 2014 Confirmed Planet
RA
17h11m15.89s
Dec
-56d40m51.74s
Distance
63.4482+0.1565-0.1558
pc
Parallax
15.7321000±0.0385045 mas
Ecliptic Latitude
-33.57957 deg
Ecliptic Longitude
262.00131 deg
Galactic Latitude
-10.02581 deg
Galactic Longitude
333.28825 deg
Total Proper Motion
103.8983825±0.0523370 mas/yr
Proper Motion (RA)
87.5849000±0.0538587 mas/yr
Proper Motion (Dec)
-55.8906000±0.0483975 mas/yr
Photometry
mV
7.24±0.03
mTESS
6.5859±0.0060
mJ
5.938±0.018
mH
5.588±0.038
mKs
5.509±0.018
mW1
5.503±0.172
mW2
5.385±0.059
mW3
5.505±0.015
mW4
5.452±0.041
mGaia
7.048370±0.000218
mB
7.905±0.000
Abundances
(Hypatia Catalog)
[Fe/H] -0.18±0.04 dex
[Na/H] -0.20±0.04 dex
[Si/H] -0.17±0.05 dex
Tools
ExoFOP Target Overview Page
IRSA Finding Chart
Stellar Hosts
Source TICv8 Gaia DR2 Stassun et al. 2017 Wittenmyer et al. 2014 Takeda et al. 2007 Valenti & Fischer 2005 Nordstrom et al. 2004 Henry et al. 1996 Michigan Catalog, Vol. 1 Cannon & Pickering 1918
S Index
--- --- --- --- --- --- --- 0.142 --- ---
CAII LOG RHK
--- --- --- --- --- --- --- -5.14 --- ---
Teff
(K)
5604.560+150.292-132.276
5582.5+38.5-115.4
 5589±18 5605 --- --- --- --- --- ---
Metallicity
(dex)
-0.2236±0.0240 [M/H] --- -0.22 [Fe/H] -0.20 [Fe/H] --- --- --- --- --- ---
M✶
(M⦿)
0.9900000+0.1346350-0.1265380
 --- 1.96±0.12
1.718 +0.03-0.022
1.718+0.030-0.022
 --- --- --- --- ---
R✶
(R⦿)
2.274650+0.138611-0.121852
2.2993386+0.0980937-0.0313900
 2.30±0.06 1.760±0.057
2.31+0.17-0.10
 --- --- --- --- ---
log g
(log10(cm/s2))
3.7198700+0.0721237-0.0961697
 --- 4.01±0.01 3.82
3.95+0.05-0.03
 --- --- --- --- ---
L✶
(log10(L⦿))
0.66269061+0.00715663-0.01466332
0.66521551+0.00157138-0.00157705
 --- --- --- --- --- --- --- ---
γ
(km/s)
--- 28.058446433094662±0.152455991514070 --- --- --- 27.9 27.9±0.2 --- --- ---
v sin i
(km/s)
--- --- --- 1.4±0.5 --- 1.4±0.5 2 --- --- ---
Sp. T
--- --- --- G5 V --- --- --- --- G5 V G0
Age
(Gyr)
--- --- --- ---
5.64+0.80-0.92
 --- --- --- --- ---
ρ✶
(g/cm3)
0.1185922+0.0369239-0.0199630
 --- --- --- --- --- --- --- --- ---
Print
Status
Confirmed Planet
Detected By
Radial Velocity
Tools
Source Stassun et al. 2017 Wittenmyer et al. 2014 McCarthy et al. 2004
Tp
(days)
--- 2453572.5±2.4 2450346±5
ω
(deg)
--- 57±4 59±4
Mp sin i
(M⨁)
779±35 711.91±15.89 570±100
Mp sin i
(MJup)
2.45±0.11 2.24±0.05 1.8±0.4
e
0.46±0.02 0.46±0.02 0.47±0.02
P
(days)
408.60001±0.50000 408.6±0.5 409.0±1
a
(au)
1.29±0.02 1.291±0.008 1.2±0.2
K
(m/s)
48.3±1.0 48.3±1.0 ---
Print
Status
Confirmed Planet
Detected By
Radial Velocity
Tools
Source Wittenmyer et al. 2014
Tp
(days)
2455219±375
ω
(deg)
352±37
Mp sin i
(M⨁)
819.97±50.85
Mp sin i
(MJup)
2.58±0.16
e
0.06±0.05
P
(days)
3452±105
K
(m/s)
24.2±1.1
a
(au)
5.36±0.09
Print
Literature Time Series (2 File Types, 3 Files)
File Type Data Points Filter Reference
Photometric Light Curve     134 Hp (Hipparcos) Hipparcos and Tycho Catalogs
Radial Velocity Curve     28 Optical Spectra O'Toole et al. 2007
Radial Velocity Curve     18 Optical Spectra McCarthy et al. 2004
Known Objects
2 Confirmed Planets
7 2MASS Point Source Catalog
Data Files
4 KELT 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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