tau Cet Overview

tau Cet 0.83 R⦿ 5283.00 K
tau Cet g
tau Cet h
tau Cet e
tau Cet f
Discovery Data
Host Planet Method Year Reference Disposition
tau Cet tau Cet g Radial Velocity 2017 Feng et al. 2017 Confirmed Planet
tau Cet tau Cet h Radial Velocity 2017 Feng et al. 2017 Confirmed Planet
tau Cet tau Cet e Radial Velocity 2017 Feng et al. 2017 Confirmed Planet
tau Cet tau Cet f Radial Velocity 2017 Feng et al. 2017 Confirmed Planet
tau Cet
  • Some stellar parameter values may be biased due to companion blend (WDS Catalog)
RA
01h44m02.23s
Dec
-15d56m01.68s
Distance
3.60304+0.00678-0.00675
pc
Parallax
277.516000±0.517309 mas
Ecliptic Latitude
-24.80956 deg
Ecliptic Longitude
17.8127 deg
Galactic Latitude
-73.4424 deg
Galactic Longitude
173.07319 deg
Total Proper Motion
1929.7238523±1.2270635 mas/yr
Proper Motion (RA)
-1729.730±1.313 mas/yr
Proper Motion (Dec)
855.493000±0.783143 mas/yr
Photometry
mV
3.49607±0.02300
mTESS
2.7459±1.7221
mJ
2.149±0.310
mH
1.800±0.234
mKs
1.794±0.274
mIc
2.680
mGaia
3.2485400±0.0103988
mB
4.220
Source TICv8 Gaia DR2 Feng et al. 2017 Turnbull 2015 Sousa et al. 2008 Takeda et al. 2007 Gray et al. 2006 Valenti & Fischer 2005 Wright et al. 2004 Nordstrom et al. 2004 Reiners & Schmitt 2003a Pizzolato et al. 2003 Nidever et al. 2002 Garrison & Beattie 1998 Henry et al. 1996 Henry et al. 1996 Duncan et al. 1991 Duncan et al. 1991 Duncan et al. 1991 Duncan et al. 1991 Duncan et al. 1991 Duncan et al. 1991 Duncan et al. 1991 Duncan et al. 1991 Duncan et al. 1991 Duncan et al. 1991 Duncan et al. 1991 Duncan et al. 1991 Duncan et al. 1991 Duncan et al. 1991 Duncan et al. 1991 Duncan et al. 1991 Michigan Catalog, Vol. 4 Cannon & Pickering 1918
S Index
--- --- --- --- --- --- --- --- 0.168±0.022 --- --- --- --- --- 0.171±0.003 0.174 0.1739±0.0044 0.1751±0.0040 0.1728±0.0023 0.1744±0.0062 0.1734±0.0032 0.1766±0.0058 0.1764±0.0053 0.1773±0.0051 0.1767±0.0033 0.1757±0.0044 0.1739±0.0044 0.1751±0.0040 0.1728±0.0023 0.1744±0.0062 0.1734±0.0032 0.1766±0.0058 --- ---
CAII LOG RHK
--- --- --- --- --- --- --- --- -4.98 --- --- --- --- --- -4.96±0.01 -4.95 --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- ---
Age
(Gyr)
--- --- --- --- --- >12.12 --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- ---
M
(M⦿)
0.92000000+0.12136600-0.09862510
--- 0.783±0.012 0.80 0.627
0.799+0.015-0.012
--- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- ---
R
(R⦿)
0.8330490+0.0278121-0.0459618
0.86241020+0.27881700-0.19391300
--- 0.83 --- 0.83±0.02 --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- ---
log g
(log10(cm/s2))
4.5605100+0.0637060-0.0809325
--- --- 4.52 4.44±0.03
4.52+0.02-0.01
--- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- ---
Teff
(K)
5333.0000+123.7510-74.6878
5375.0+730.0-702.5
--- 5283 5310±17 --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- ---
L
(log10(L⦿))
-0.2960778+0.0090776-0.0108362
-0.25236364+0.00310690-0.00312929
---
-0.284 +0.040-0.044
-0.305+0.003-0.003
--- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- ---
Metallicity
(dex)
-0.43±0.10 [M/H] --- --- -0.52 [Fe/H] -0.52±0.01 [Fe/H] --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- ---
Sp. T
--- --- --- G8.5V --- --- G8.5 V --- --- --- --- --- --- G8 V --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- G8 V K0
γ
(km/s)
--- --- --- --- --- --- --- -16.7 --- -17.1±0.1 --- --- -16.6 --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- ---
v sin i
(km/s)
--- --- --- --- --- --- --- 1.3±0.5 --- 1 <1.8±0.1 --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- ---
Prot
(days)
--- --- --- --- --- --- --- --- --- --- --- 34.50 --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- ---
ρ
(g/cm3)
2.2435835+0.4319947-0.4638653
--- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- ---
Status
Confirmed Planet
Detected By
Radial Velocity
Tools
Source Feng et al. 2017
ω
(deg)
395.341+36.096-84.798
Mp sin i
(M)
1.75+0.25-0.40
Mp sin i
(MJup)
0.00551+0.00079-0.00126
e
0.060+0.130-0.060
P
(days)
20.00+0.02-0.01
K
(m/s)
0.49+0.07-0.11
a
(au)
0.133+0.001-0.002
Status
Confirmed Planet
Detected By
Radial Velocity
Tools
Source Feng et al. 2017
ω
(deg)
7.450+37.240-48.130
Mp sin i
(M)
1.83+0.68-0.26
Mp sin i
(MJup)
0.00576+0.00214-0.00082
e
0.23+0.16-0.15
P
(days)
49.41+0.08-0.10
K
(m/s)
0.39+0.15-0.06
a
(au)
0.243±0.003
Status
Confirmed Planet
Detected By
Radial Velocity
Tools
Source Feng et al. 2017
ω
(deg)
22.35+73.91-45.84
Mp sin i
(M)
3.93+0.83-0.64
Mp sin i
(MJup)
0.0124+0.0026-0.0020
e
0.18+0.18-0.14
P
(days)
162.87+1.08-0.46
K
(m/s)
0.55+0.13-0.09
a
(au)
0.538±0.060
Status
Confirmed Planet
Detected By
Radial Velocity
Tools
Source Feng et al. 2017
ω
(deg)
119.75+41.25-70.47
Mp sin i
(M)
3.93+1.05-1.37
Mp sin i
(MJup)
0.0124+0.0033-0.0043
e
0.16+0.07-0.16
P
(days)
636.13+11.70-47.69
K
(m/s)
0.35+0.10-0.12
a
(au)
1.334+0.017-0.044
Literature Stellar Spectra (10 Files)
File Type Spectrum Type Wavelength Category Reference
Spectra     echelle grating Optical California Planet Search
Spectra     echelle grating Optical California Planet Search
Spectra     echelle grating Optical California Planet Search
Spectra     echelle grating Optical California Planet Search
Spectra     echelle grating Optical California Planet Search
Spectra     echelle grating Optical California Planet Search
Spectra     echelle grating Optical California Planet Search
Spectra     echelle grating Optical California Planet Search
Spectra     echelle grating Optical California Planet Search
Spectra     echelle grating Optical California Planet Search
Literature Time Series (2 File Types, 5 Files)
File Type Data Points Filter Reference
Photometric Light Curve     74 Hp (Hipparcos) Hipparcos and Tycho Catalogs
Radial Velocity Curve     535 Optical Spectra Howard & Fulton 2016
Radial Velocity Curve     191 Optical Spectra Howard & Fulton 2016
Radial Velocity Curve     95 Optical Spectra Howard & Fulton 2016
Radial Velocity Curve     87 Optical Spectra Howard & Fulton 2016
Known Objects
4 Confirmed Planets
1 2MASS Point Source Catalog
Data Files
4 Associated Literature Data
System
Star
Confirmed
Candidate
Refuted
Controversial
False Positive
Aliases
Data Access
Transit Prediction Service
Time Series
Kepler | K2
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