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HD 12661 Overview

HD 12661 1.10 R⦿ 5754.00 K
HD 12661 b
HD 12661 c
Architecture
HD 12661
HD 12661
HD 12661 b
HD 12661 c
Discovery Data
Host Planet Orbital Separation Planet Size Method Year Reference Disposition
HD 12661 HD 12661 b 262.71 d > 772.33 M⨁ Radial Velocity 2000 Fischer et al. 2001 Confirmed Planet
HD 12661 HD 12661 c 1708 d > 575.88 M⨁ Radial Velocity 2002 Fischer et al. 2003 Confirmed Planet
HD 12661
RA
02h04m34.16s
Dec
+25d24m48.83s
Distance
37.8478+0.0633-0.0630
pc
Parallax
26.3927000±0.0437412 mas
Ecliptic Latitude
12.00084 deg
Ecliptic Longitude
37.77908 deg
Galactic Latitude
-34.58321 deg
Galactic Longitude
143.06278 deg
Total Proper Motion
204.3236427±0.0890284 mas/yr
Proper Motion (RA)
-108.181000±0.089332 mas/yr
Proper Motion (Dec)
-173.3350000±0.0889099 mas/yr
Photometry
mV
7.43±0.03
mTESS
6.7944±0.0060
mJ
6.182±0.019
mH
5.896±0.021
mKs
5.861±0.024
mW1
5.794±0.139
mW2
5.732±0.049
mW3
5.846±0.015
mW4
5.783±0.044
mGaia
7.24746±0.00037
mB
8.156±0.023
Abundances
(Hypatia Catalog)
[Fe/H] 0.40±0.14 dex
[C/H] 0.33±0.33 dex
[O/H] 0.22±0.15 dex
[Na/H] 0.42±0.17 dex
[Mg/H] 0.44±0.22 dex
[Al/H] 0.42±0.14 dex
[Si/H] 0.36±0.11 dex
[Ca/H] 0.30±0.13 dex
[Y/H] 0.31±0.09 dex
[BaII/H] 0.24±0.07 dex
Tools
Planetary Systems
ExoFOP Target Overview Page
IRSA Finding Chart
Stellar Hosts
Source An et al. 2025 An et al. 2025 Rosenthal et al. 2021 TICv8 Gaia DR2 Stassun et al. 2017 Liu et al. 2014 Ghezzi et al. 2010 Valenti & Fischer 2005 Wright et al. 2004 Santos et al. 2004 Santos et al. 2003 Nidever et al. 2002 Fischer et al. 2001 Cannon & Pickering 1918
S Index
--- --- --- --- --- --- --- --- --- 0.150±0.019 --- --- --- --- ---
CAII LOG RHK
--- --- --- --- --- --- --- --- --- -5.08 --- --- --- --- ---
Teff
(K)
--- --- 5661.17857861000±94.13539023677
5655.000+104.729-104.017
5656.00+78.25-35.00
 5645±31 5748±70 5785±50 --- --- 5702±36 5715 --- 5754 ---
Metallicity
(dex)
--- --- 0.33827528360750003±0.05896265415172500 [Fe/H] 0.3±0.1 [M/H] --- 0.36 [Fe/H] 0.36±0.03 [Fe/H] 0.37±0.03 [Fe/H] --- --- 0.36±0.05 [Fe/H] 0.36 [Fe/H] --- 0.29±0.05 [Fe/H] ---
M✶
(M⦿)
1.158+0.058-0.056
1.158+0.054-0.055
 1.08482566338500±0.04381502270397
1.000000+0.134603-0.117835
 --- 1.20±0.10 1.02±0.02 1.10±0.10 --- --- 1.05 1.05 --- 1.07 ---
R✶
(R⦿)
--- --- 1.19817158325500±0.02673242219787
1.2137700+0.0716030-0.0313769
1.2145214+0.0151719-0.0329207
 1.20±0.02 1.11±0.08 1.04±0.08 --- --- --- --- --- 1.096 ---
log g
(log10(cm/s2))
--- --- 4.3161284158550002±0.0287057483393500
4.2698000+0.0539079-0.0875185
 --- 4.36±0.03 --- 4.39±0.15 --- --- 4.33±0.08 4.49 --- 4.43 ---
L✶
(log10(L⦿))
--- --- ---
0.13269729+0.00991431-0.01048918
0.13354264+0.00103477-0.00103724
 --- 0.063±0.063 0.033±0.063 --- --- --- --- --- --- ---
Age
(Gyr)
--- --- --- --- --- --- 6.39±1.94
<1.0+2.5-1.0
 --- --- --- --- --- --- ---
γ
(km/s)
--- --- --- --- -47.375037642262583±0.127676017293850 --- --- --- -46.9 --- --- --- -47.3 --- ---
v sin i
(km/s)
--- --- --- --- --- --- --- --- 1.3±0.5 --- --- --- --- --- ---
Sp. T
--- --- --- --- --- --- --- --- --- --- --- --- --- --- K0
ρ✶
(g/cm3)
--- --- ---
0.7884200+0.1703423-0.1334739
 --- --- --- --- --- --- --- --- --- --- ---
Print
Status
Confirmed Planet
Detected By
Astrometry, Radial Velocity
Tools
Planetary Systems
Source Stassun et al. 2017 An et al. 2025 Rosenthal et al. 2021 Liu et al. 2014 Wright et al. 2009 Butler et al. 2006 Fischer et al. 2001
Tp
(days)
--- --- --- --- 2454152.76±0.87 2450214.1±2.9 2451542.5±4.3
(JD)
ω
(deg)
--- --- -60.62±0.74 --- 296.0±1.5 296.3±2.6 323.1±8.5
Mp sin i
(M⨁)
772±44 757.1±25.4
725.6+19.4-19.7
 691.569±11.759 731±60 743.7±60.4 887
Mp sin i
(MJup)
2.43±0.14 2.382±0.080
2.283+0.061-0.062
 2.176±0.037 2.30±0.19 2.34±0.19 2.79
e
0.38±0.01
0.3598+0.0059-0.0060
0.3597+0.0046-0.0044
 0.3768±0.0077 0.3768±0.0077 0.361±0.011 0.230±0.024
P
(days)
262.70862±0.08300 262.367±0.025
262.360+0.017-0.016
 262.709±0.083 262.709±0.083 262.53±0.27 252.7±2.7
K
(m/s)
73.6±0.6 ---
73.59+0.36-0.37
 73.56±0.56 73.56±0.56 74.19±0.85 88.4±2.0
a
(au)
0.84±0.02 0.843±0.014 0.824±0.011 0.8079±0.0052 0.831±0.048 0.831±0.048 0.79
TC
(days)
--- ---
2456079.28+0.66-0.62
(BJD)
--- --- --- ---
i
(deg)
---
86.0+41.0-38.0
 --- --- --- --- ---
Print
Status
Confirmed Planet
Detected By
Astrometry, Radial Velocity
Tools
Planetary Systems
Source Liu et al. 2014 An et al. 2025 Rosenthal et al. 2021 Wright et al. 2009 Butler et al. 2006
ω
(deg)
--- ---
60+110-20
 165 38
Mp sin i
(M⨁)
575.884±15.255 --- 589.6±17.2 610±51 581.6±50.9
Mp sin i
(MJup)
1.812±0.048 --- 1.855±0.054 1.92±0.16 1.83±0.16
e
0.031±0.022
0.0131+0.0150-0.0094
 0.025±0.012 0.031±0.022 0.017±0.029
P
(days)
1708.0±14.0
1699.7+3.2-3.0
1696.7+2.3-2.4
 1708±14 1679.0±29.0
K
(m/s)
30.41±0.62 --- 29.96±0.34 30.41±0.62 29.27±0.88
a
(au)
2.8145±0.0238
2.929+0.045-0.047
2.861+0.038-0.039
 2.90±0.17 2.86±0.17
TC
(days)
--- ---
2455774.9+7.4-7.0
(BJD)
--- ---
Mp
(M⨁)
---
899+261-213
 --- --- ---
Mp
(MJup)
---
2.83+0.82-0.67
 --- --- ---
i
(deg)
---
136+11-21
 --- --- ---
Tp
(days)
--- --- --- 2456153.42±0.87 2452130±330
Print
Literature Time Series (2 File Types, 9 Files)
File Type Data Points Filter Reference
Photometric Light Curve     89 Hp (Hipparcos) Hipparcos and Tycho Catalogs
Radial Velocity Curve     66 Optical Spectra Wright et al. 2009
Radial Velocity Curve     40 Optical Spectra Wright et al. 2009
Radial Velocity Curve     57 Optical Spectra Butler et al. 2006
Radial Velocity Curve     51 Optical Spectra Butler et al. 2006
Radial Velocity Curve     45 Optical Spectra Fischer et al. 2003
Radial Velocity Curve     41 Optical Spectra Fischer et al. 2003
Radial Velocity Curve     20 Optical Spectra Fischer et al. 2001
Radial Velocity Curve     15 Optical Spectra Fischer et al. 2001
Known Objects
2 Confirmed Planets
2 2MASS Point Source Catalog
Data Files
4 KELT Time Series
1 SuperWASP 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
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