eps Eri Overview
eps Eri
0.77
R⦿
5146.00
K
eps Eri b
- Other Data
- Bibliography 37
- Exoplanet Archive Notes 3
- Nearby Data 4
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)
- Planet parameters drawn from 800 Myr model in Table 4 (Mawet et al. 2019)
- 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
-
mV3.71548±0.02300
-
mTESS2.9054±1.7796
-
mJ2.228±0.298
-
mH1.880±0.276
-
mKs1.776±0.286
-
mW1>-0.792
-
mW2>-0.146
-
mW31.748±0.025
-
mW41.406±0.014
-
mIc---
-
mGaia3.4771900±0.0055451
-
mB4.616±0.018
-
Abundances
(Hypatia Catalog) -
[Fe/H] -0.05±0.46 dex
-
[C/H] 0.06±0.35 dex
-
[O/H] -0.07±0.16 dex
-
[Na/H] -0.13±0.45 dex
-
[Mg/H] -0.02±0.96 dex
-
[Al/H] -0.08±0.23 dex
-
[Si/H] -0.08±0.25 dex
-
[Ca/H] -0.01±0.67 dex
-
[Y/H] 0.01±0.14 dex
-
[BaII/H] 0.07±0.18 dex
| Source | Llop-Sayson et al. 2021 | 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)
|
0.600±0.200 | --- | --- | 0.5±0.3 | --- | 2.6 | --- | 1.12 | --- | <0.60 | 0.8 | --- | --- | --- | --- | --- | --- | --- | <1 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
|
M✶
(M⦿)
|
0.82±0.02 | 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 V | --- | --- | --- | --- | 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 | Llop-Sayson et al. 2021 | Rosenthal et al. 2021 | Mawet et al. 2019 | Benedict et al. 2006 | Hatzes et al. 2000 |
|---|---|---|---|---|---|
|
ω
(deg)
|
-19.150+88.270-94.800
|
-10+69-49
|
175+53-52
|
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+0.070-0.050
|
0.044+0.047-0.031
|
0.070+0.060-0.050
|
0.702±0.039 | 0.608±0.041 |
|
P
(days)
|
2671+17-23
|
2650±21 | 2690±30 | 2502±10 | 2502.1±20.1 |
|
K
(m/s)
|
10.34+0.95-0.93
|
11.00+0.59-0.61
|
--- | 18.5±0.2 | 19.0±1.7 |
|
a
(au)
|
3.53+0.03-0.04
|
3.500±0.039 | --- | 3.39±0.36 | 3.4 |
|
TC
(days)
|
2460017+76-32
|
2457388+45-36
|
--- | --- | --- |
|
Tp
(days)
|
2460054+680-690
|
--- |
2447198+361-426
|
2454207.5±7.0 | 2449194.8±13.5 |
|
Mp
(M⨁)
|
210+38-29
|
--- |
248+121-38
|
493±76 | 540 |
|
Mp
(MJup)
|
0.66+0.12-0.09
|
--- |
0.780+0.380-0.120
|
1.55±0.24 | 1.7 |
|
i
(deg)
|
78.810+29.340-22.410
|
--- | 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
-
Constraining the Orbit and Mass of epsilon Eridani b with Radial Velocities, Hipparcos IAD-Gaia DR2 Astrometry, and Multiepoch Vortex Coronagraphy Upper Limits
Llop-Sayson et al. 2021 | Reference Overview -
The California Legacy Survey. I. A Catalog of 178 Planets from Precision Radial Velocity Monitoring of 719 Nearby Stars over Three Decades
Rosenthal et al. 2021 | Reference Overview -
The Revised TESS Input Catalog and Candidate Target List
TICv8 | Reference Overview -
Deep Exploration of ∊ Eridani with Keck Ms-band Vortex Coronagraphy and Radial Velocities: Mass and Orbital Parameters of the Giant Exoplanet
Mawet et al. 2019 | Reference Overview -
Gaia Data Release 2
Gaia DR2 | Reference Overview -
Limits on Planetary Companions from Doppler Surveys of Nearby Stars
Howard & Fulton 2016 | Reference Overview -
ExoCat-1: The Nearby Stellar Systems Catalog for Exoplanet Imaging Missions
Turnbull 2015 | Reference Overview -
Searching for signatures of planet formation in stars with circumstellar debris discs
Maldonado et al. 2015 | Reference Overview -
All WISE Data Release
Cutri et al. 2014 | Reference Overview -
Stellar Parameters and Metallicities of Stars Hosting Jovian and Neptunian Mass Planets: A Possible Dependence of Planetary Mass on Metallicity
Ghezzi et al. 2010 | Reference Overview -
A scenario of planet erosion by coronal radiation
Sanz-Forcada et al. 2010 | Reference Overview -
Spectroscopic parameters for 451 stars in the HARPS GTO planet search program. Stellar [Fe/H] and the frequency of exo-Neptunes
Sousa et al. 2008 | Reference Overview -
Structure and Evolution of Nearby Stars with Planets. II. Physical Properties of ~1000 Cool Stars from the SPOCS Catalog
Takeda et al. 2007 | Reference Overview -
The Extrasolar Planet eta Eridani b: Orbit and Mass
Benedict et al. 2006 | Reference Overview -
Differential Rotation of epsilon Eridani Detected by MOST
Croll et al. 2006 | Reference Overview -
Contributions to the Nearby Stars (NStars) Project: Spectroscopy of Stars Earlier than M0 within 40 parsecs: The Southern Sample
Gray et al. 2006 | Reference Overview -
Catalog of Nearby Exoplanets
Butler et al. 2006 | Reference Overview -
Spectroscopic Properties of Cool Stars (SPOCS). I. 1040 F, G, and K Dwarfs from Keck, Lick, and AAT Planet Search Programs
Valenti & Fischer 2005 | Reference Overview -
Chromospheric Ca II Emission in Nearby F, G, K, and M Stars
Wright et al. 2004 | Reference Overview -
The Geneva-Copenhagen survey of the Solar neighbourhood. Ages,metallicities and kinematix properties of ~14 000 F and G dwarfs
Nordstrom et al. 2004 | Reference Overview -
Contributions to the Nearby Stars (NStars) Project: Spectroscopy of Stars Earlier than M0 within 40 parsecs: The Northern Sample I
Gray et al. 2003 | Reference Overview -
2MASS All-Sky Catalog of Point Sources
2MASS Point Source Catalog | Reference Overview -
The stellar activity-rotation relationship revisited: Dependence of saturated and non-saturated X-ray emission regimes on stellar mass for late-type dwarfs.
Pizzolato et al. 2003 | Reference Overview -
Radial Velocities of 889 late-type stars
Nidever et al. 2002 | Reference Overview -
Revised Coordinates and Proper Motions of the Stars in the Luyten Half-Second Catalog
Bakos et al. 2002 | Reference Overview -
Yale Trigonometric Parallaxes, Fourth Edition (van Altena+ 1995)
van Altena et al. 2001 | Reference Overview -
Evidence for a Long-Period Planet Orbiting eta Eridani
Hatzes et al. 2000 | Reference Overview -
The Tycho-2 catalog of the 2.5 million brightest stars
The Tycho-2 Catalog | Reference Overview -
Michigan Catalog of two-dimensional spectral types for the HD stars, Vol 5
Michigan Catalog, Vol. 5 | Reference Overview -
The Washington Double Star Catalog (WDS, 1996.0)
WDS Catalog | Reference Overview -
The Hipparcos and Tycho Catalogs
Hipparcos and Tycho Catalogs | Reference Overview -
A Survey of Ca II H and K Chromospheric Emission in Southern Solar-Type Stars
Henry et al. 1996 | Reference Overview -
CA II H and K measurements made at Mount Wilson Observatory, 1966-1983
Duncan et al. 1991 | Reference Overview -
A search for substellar companions to solar-type stars
Campbell et al. 1988 | Reference Overview -
VRI photometry of nearby stars.
Cousins 1980a | Reference Overview -
UBVRIJKL Photometry of Bright Stars
Johnson et al. 1966 | Reference Overview -
The Henry Draper catalogue 0h, 1h, 2h, and 3h
Cannon & Pickering 1918 | Reference Overview
- System
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- Candidate
- False Positive Planet
- Controversial
- False Positive
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