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HD 181433 Overview

HD 181433 0.83 R⦿ 4900.00 K
HD 181433 b
HD 181433 c
HD 181433 d
Architecture
HD 181433
HD 181433
HD 181433 b
HD 181433 c
HD 181433 d
Discovery Data
Host Planet Orbital Separation Planet Size Method Year Reference Disposition
HD 181433 HD 181433 b 9.37 d > 7.22 M⨁ Radial Velocity 2008 Bouchy et al. 2009 Confirmed Planet
HD 181433 HD 181433 c 1018.5 d > 235.5 M⨁ Radial Velocity 2008 Bouchy et al. 2009 Confirmed Planet
HD 181433 HD 181433 d 6896.1 d > 206.91 M⨁ Radial Velocity 2008 Bouchy et al. 2009 Confirmed Planet
HD 181433
RA
19h25m08.97s
Dec
-66d28m04.02s
Distance
26.8762±0.0225 pc
Parallax
37.1787000±0.0308949 mas
Ecliptic Latitude
-43.8838 deg
Ecliptic Longitude
281.59816 deg
Galactic Latitude
-28.04356 deg
Galactic Longitude
329.51487 deg
Total Proper Motion
330.0287524±0.0419822 mas/yr
Proper Motion (RA)
-230.9310000±0.0339134 mas/yr
Proper Motion (Dec)
235.7750000±0.0484766 mas/yr
Photometry
mV
8.40±0.03
mTESS
7.4903±0.0060
mJ
6.664±0.020
mH
6.243±0.029
mKs
6.094±0.023
mW1
6.092±0.101
mW2
6.057±0.035
mW3
6.092±0.015
mW4
6.001±0.042
mIc
7.380
mGaia
8.092280±0.000274
mB
9.420±0.024
Abundances
(Hypatia Catalog)
[Fe/H] 0.42±0.12 dex
[C/H] 0.44±0.06 dex
[O/H] 0.34±0.02 dex
[Na/H] 0.63±0.16 dex
[Mg/H] 0.40±0.24 dex
[Al/H] 0.55±0.08 dex
[Si/H] 0.50±0.10 dex
[Ca/H] 0.36±0.48 dex
[Y/H] 0.43±0.08 dex
[BaII/H] 0.27±0.04 dex
Tools
Planetary Systems
ExoFOP Target Overview Page
IRSA Finding Chart
Stellar Hosts
Source Standing et al. 2026 An et al. 2025 An et al. 2025 TICv8 Horner et al. 2019 Gaia DR2 Stassun et al. 2017 Turnbull 2015 Ghezzi et al. 2010 Bouchy et al. 2009 Sousa et al. 2008 Gray et al. 2006 Nordstrom et al. 2004 Michigan Catalog, Vol. 1 Cannon & Pickering 1918
Teff
(K)
--- --- ---
4929.630+127.518-146.004
 4962±134
4843.4+67.1-41.7
 4918±15 4900 4915±63 4962±134 4962±134 --- --- --- ---
L✶
(log10(L⦿))
--- --- ---
-0.4561762+0.0162789-0.0125293
-0.511+0.035-0.038
-0.44627842+0.00058270-0.00058347
 ---
-0.444 +0.106-0.141
-0.496±0.066
-0.511 +0.035-0.038
-0.511+0.035-0.038
 --- --- --- ---
M✶
(M⦿)
0.86±0.06 0.871±0.043
0.869+0.042-0.041
0.8100000+0.0934514-0.1000920
 0.78 --- 0.63±0.07 0.77 0.90±0.10 0.78 0.781 --- --- --- ---
R✶
(R⦿)
--- --- ---
0.8108410+0.0675859-0.0480020
 ---
0.8495966+0.0148205-0.0230602
 0.79±0.01 0.83 0.78±0.07 --- --- --- --- --- ---
log g
(log10(cm/s2))
--- --- ---
4.5286800+0.0800214-0.1138350
 4.37±0.26 --- 4.45±0.04 4.49 4.28±0.31 4.37±0.26 4.37±0.26 --- --- --- ---
Sp. T
--- --- --- --- --- --- --- K2IV/V --- K3 IV --- K3 III-IV --- K2 IV/V K2
Metallicity
(dex)
--- --- --- 0.4012220±0.0373969 [M/H] 0.33±0.13 [Fe/H] --- 0.38 [Fe/H] --- 0.46±0.05 [Fe/H] 0.33±0.13 [Fe/H] 0.33±0.13 [Fe/H] --- --- --- ---
γ
(km/s)
39.77676±0.00019 --- --- --- --- 39.977439990487142±0.177456674038174 --- --- --- 40.2125±0.0004 --- --- 39.6±0.2 --- ---
v sin i
(km/s)
--- --- --- --- 1.5 --- --- --- --- 1.5 --- --- 2 --- ---
Age
(Gyr)
--- --- --- --- 6.7±1.8 --- --- ---
2.0+9.0-2.0
 --- --- --- --- --- ---
ρ✶
(g/cm3)
--- --- ---
2.1421183+0.8303073-0.3954351
 --- --- --- --- --- --- --- --- --- --- ---
Prot
(days)
--- --- --- --- 54 --- --- --- --- --- --- --- --- --- ---
Print
Status
Confirmed Planet
Detected By
Radial Velocity
Tools
Planetary Systems
Source Standing et al. 2026 Kiefer et al. 2021 Horner et al. 2019 Stassun et al. 2017 Campanella 2011 Bouchy et al. 2009
Mp
(M⨁)
--- <1709 --- --- --- ---
Mp
(MJup)
--- <5.376 --- --- --- ---
Mp sin i
(M⨁)
7.22+0.44-0.45
 7.542 7.09±0.10 6.4±0.0 7.42102 7.5
Mp sin i
(MJup)
0.0227+0.0014-0.0014
 0.02373 0.0223±0.0003 0.020±0.000 0.02335 0.024
i
(deg)
--- >0.2542 --- --- --- ---
P
(days)
9.37450+0.00025-0.00038
 9.374 9.3745±0.0002 9.37430±0.00190 9.37459 9.3743±0.0019
Tp
(days)
2456470.15+0.10-0.19
(BJD)
--- 2452939.16±0.06
(BJD)
--- 2452788.9185 2454542.0±0.26
ω
(deg)
201.90+4.20-7.91
 --- 210.4±2.5 --- 202.039 202±10
e
0.396+0.015-0.024
 --- 0.336±0.014 0.40±0.06 0.38840 0.396±0.062
K
(m/s)
2.646+0.089-0.124
 --- 2.7±0.1 2.9±0.2 2.57 2.94±0.23
a
(au)
0.0828+0.0019-0.0020
 --- 0.0801±0.0001 0.080±0.000 0.08013 0.080
Print
Status
Confirmed Planet
Detected By
Astrometry, Radial Velocity
Tools
Planetary Systems
Source Standing et al. 2026 An et al. 2025 Kiefer et al. 2021 Horner et al. 2019 Campanella 2011 Bouchy et al. 2009
Mp
(M⨁)
--- --- <2207 --- --- ---
Mp
(MJup)
--- --- <6.944 --- --- ---
Mp sin i
(M⨁)
235.50+10.80-11.13
 238±9 203.5 214±1 207.47704 203
Mp sin i
(MJup)
0.74097+0.03398-0.03502
 0.749±0.029 0.6404 0.674±0.003 0.65282 0.64
i
(deg)
---
111+59-62
 >5.196 --- --- ---
P
(days)
1018.50+1.47-0.78
1022+4-3
 962.0 1014.5±0.6 975.41 962.0±15
Tp
(days)
2455711.3+3.4-7.1
(BJD)
--- --- 2452184.3±1.9
(BJD)
2452255.6235 2453235.0±7.3
ω
(deg)
10.10+0.74-1.50
 --- --- 8.6±0.7 22.221 21.4±3.2
e
0.2402+0.0093-0.0080
0.235+0.017-0.016
 --- <0.235±0.003 0.26912 0.28±0.02
K
(m/s)
17.05+0.19-0.18
 --- --- 16.55±0.07 14.63 16.2±0.4
a
(au)
1.885+0.042-0.044
1.897+0.031-0.032
 --- 1.819±0.001 1.77310 1.76
Print
Status
Confirmed Planet
Detected By
Astrometry, Radial Velocity
Tools
Planetary Systems
Source Standing et al. 2026 An et al. 2025 Kiefer et al. 2021 Horner et al. 2019 Campanella 2011 Bouchy et al. 2009
Mp
(M⨁)
---
858+540-636
 <3585 --- --- ---
Mp
(MJup)
---
2.7+1.7-2.0
 <11.28 --- --- ---
Mp sin i
(M⨁)
206.91±10.49 --- 170.2 195±1 166.89822 171
Mp sin i
(MJup)
0.65101±0.03301 --- 0.5355 0.612±0.004 0.52514 0.54
i
(deg)
---
164.5+6.8-53.0
 >2.665 --- --- ---
P
(days)
6896.1+102.7-123.7
13000+8036-4383
 2172 7012±276 2468.46 2172±158
Tp
(days)
2450647.2+155.4-87.9
(BJD)
--- --- 2446915±239
(BJD)
2451844.4714 2452154±194
ω
(deg)
250.1+3.4-1.7
 --- --- 241.4±2.4 319.129 -30±13
e
0.444+0.020-0.018
0.64+0.11-0.12
 --- 0.469±0.013 0.46626 0.48±0.05
K
(m/s)
8.58+0.15-0.13
 --- --- 8.7±0.1 9.41 11.3±0.9
a
(au)
6.74±0.18
10.3+3.9-2.6
 --- 6.60±0.22 3.29347 3
Print
Literature Time Series (2 File Types, 2 Files)
File Type Data Points Filter Reference
Photometric Light Curve     148 Hp (Hipparcos) Hipparcos and Tycho Catalogs
Radial Velocity Curve     107 Optical Spectra Bouchy et al. 2009
Known Objects
3 Confirmed Planets
3 2MASS Point Source Catalog
Data Files
3 SuperWASP Time Series
3 Associated Literature Data
System
Star
Confirmed
Candidate
False Positive Planet
Controversial
False Positive
Aliases
Data Access
Transit Prediction Service
Time Series
Kepler | K2
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