eps Eri Overview

eps Eri 0.77 R⦿ 5146.00 K
eps Eri b
Architecture
eps Eri
eps Eri
eps Eri b
Discovery Data
Host Planet Method Year Reference Disposition
eps Eri eps Eri b Radial Velocity 2000 Hatzes et al. 2000 Confirmed Planet
eps Eri
  • Some stellar parameter values may be biased due to companion blend (WDS Catalog)
  • Stellar mass selected from evolutionary track mass (M_track) in Table 4 (Ghezzi et al. 2010)
eps Eri b
RA
03h32m54.82s
Dec
-09d27m29.42s
Distance
3.20260±0.00483 pc
Parallax
312.219000±0.467348 mas
Ecliptic Latitude
-27.71455 deg
Ecliptic Longitude
48.16323 deg
Galactic Latitude
-48.05487 deg
Galactic Longitude
195.84135 deg
Total Proper Motion
975.5865066±0.5673523 mas/yr
Proper Motion (RA)
-975.376000±0.567357 mas/yr
Proper Motion (Dec)
20.265500±0.556325 mas/yr
Photometry
mV
3.71548±0.02300
mTESS
2.9054±1.7796
mJ
2.228±0.298
mH
1.880±0.276
mKs
1.776±0.286
mW1
>-0.792
mW2
>-0.146
mW3
1.748±0.025
mW4
1.406±0.014
mIc
2.785
mGaia
3.4771900±0.0055451
mB
4.616±0.018
Source Rosenthal et al. 2021 TICv8 Mawet et al. 2019 Gaia DR2 Turnbull 2015 Maldonado et al. 2015 Sanz-Forcada et al. 2010 Sousa et al. 2008 Takeda et al. 2007 Benedict et al. 2006 Gray et al. 2006 Valenti & Fischer 2005 Wright et al. 2004 Nordstrom et al. 2004 Gray et al. 2003 Pizzolato et al. 2003 Nidever et al. 2002 Hatzes et al. 2000 Michigan Catalog, Vol. 5 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 Cannon & Pickering 1918
S Index
--- --- --- --- --- --- --- --- --- --- --- --- 0.447±0.058 --- --- --- --- --- --- 0.490±0.021 0.4938±0.0194 0.4920±0.0536 0.5001±0.0212 0.5098±0.0194 0.5328±0.0196 0.4928±0.0162 0.4595±0.0111 0.5300±0.0185 0.5467±0.0174 0.5309±0.0248 0.4938±0.0194 0.4920±0.0536 0.5001±0.0212 0.5098±0.0194 0.5328±0.0196 0.4928±0.0162 ---
CAII LOG RHK
--- --- --- --- --- --- --- --- --- --- --- --- -4.51 --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- ---
Teff
(K)
5020.3760341750003±57.6873540161000
5065.0000+131.1390-71.5572
---
4975.000+520.667-288.667
5146 5136±18 --- 5153±42 --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- ---
L
(log10(L⦿))
---
-0.4706705+0.0113977-0.0087912
---
-0.41928208+0.00174942-0.00175652
-0.456 +0.069-0.082
--- ---
-0.485+0.003-0.003
--- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- ---
Metallicity
(dex)
-0.043887015946950006±0.058290869190199997 [Fe/H] -0.050±0.100 [M/H] --- --- -0.03 [Fe/H] -0.03±0.02 [Fe/H] --- -0.11±0.03 [Fe/H] --- -0.13±0.04 [Fe/H] --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- ---
Age
(Gyr)
--- --- 0.5±0.3 --- 2.6 --- 1.12 --- <0.60 0.8 --- --- --- --- --- --- --- <1 --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- ---
M
(M⦿)
0.814595451310500±0.024151859262575
0.8500000+0.1199210-0.0799538
0.781±0.005 --- 0.86 --- --- 0.855
0.856+0.006-0.008
0.83±0.05 --- --- --- --- --- --- --- 0.85 --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- ---
R
(R⦿)
0.75910566974500004±0.01181633622092500
0.7553680+0.0285487-0.0480794
---
0.8306641+0.1054850-0.1499400
0.77 --- --- ---
0.77+0.02-0.01
--- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- ---
log g
(log10(cm/s2))
4.5900996225549999±0.0182402917122250
4.6111700+0.0634557-0.0883423
--- --- 4.61 4.71±0.05 --- 4.53±0.07 4.61 --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- ---
Sp. T
--- --- --- --- K2.0V --- --- --- --- --- K2 V (k) --- --- --- K2 V (k) --- --- --- K2 V --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- K0
γ
(km/s)
--- --- --- --- --- --- --- --- --- --- --- 17.3 --- 16.0±0.1 --- --- 16.3 --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- ---
v sin i
(km/s)
--- --- --- --- --- --- --- --- --- --- --- 2.4±0.5 --- 3 --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- ---
Prot
(days)
--- --- --- --- --- --- --- --- --- --- --- --- --- --- --- 11.30 --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- ---
ρ
(g/cm3)
---
2.7804171+0.5076418-0.6691106
--- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- ---
Status
Confirmed Planet
Detected By
Radial Velocity
Tools
Source Mawet et al. 2019 Rosenthal et al. 2021 Benedict et al. 2006 Hatzes et al. 2000
Tp
(days)
2447198+361-426
2457388+45-36
2454207.5±7.0 2449194.8±13.5
ω
(deg)
175+53-52
-10+69-49
47±3 48.9±4.1
Mp sin i
(M)
---
207+12-12
248±25 273
Mp sin i
(MJup)
---
0.651+0.038-0.039
0.78±0.08 0.86
e
0.070+0.060-0.050
0.044+0.047-0.031
0.702±0.039 0.608±0.041
P
(days)
2690±30 2650±21 2502±10 2502.1±20.1
K
(m/s)
---
11.00+0.59-0.61
18.5±0.2 19.0±1.7
a
(au)
--- 3.500±0.039 3.39±0.36 3.4
Mp
(M)
--- --- 494±76 547
Mp
(MJup)
--- --- 1.56±0.24 1.72
Mp
(M)
248+121-38
--- 493±76 540
Mp
(MJup)
0.780+0.380-0.120
--- 1.55±0.24 1.7
i
(deg)
89.0±42.0 --- 30.1±3.8 30
Literature Time Series (2 File Types, 8 Files)
File Type Data Points Filter Reference
Photometric Light Curve     492 Optical (MOST) Croll et al. 2006
Photometric Light Curve     75 Hp (Hipparcos) Hipparcos and Tycho Catalogs
Radial Velocity Curve     127 Optical Spectra Howard & Fulton 2016
Radial Velocity Curve     61 Optical Spectra Howard & Fulton 2016
Radial Velocity Curve     49 Optical Spectra Howard & Fulton 2016
Radial Velocity Curve     33 Optical Spectra Benedict et al. 2006
Radial Velocity Curve     120 Optical Spectra Butler et al. 2006
Radial Velocity Curve     33 Optical Spectra Campbell et al. 1988
Known Objects
1 Confirmed Planets
1 2MASS Point Source Catalog
Data Files
1 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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