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Stellar HostProfile

eps Eri

K2.0V • 3.20 pc

Records

40

literature rows

Planets

1

system count

References

26

distinct source labels

HIP: HIP 16537TIC: TIC 118572803HD: HD 22049

Approximate color

from effective temperature

Canonical Summary

Adopted host values from one source row

Values come from the row with the most populated summary measurements. Missing values stay missing. Ranges and counts describe all source rows.

Stellar source: Turnbull 2015 • System source: TICv8

Temperature

5146 K

4975 to 5153

7 values • 7 distinct

Mass

0.86 Msun

0.78 to 0.86

10 values • 8 distinct

Radius

0.77 Rsun

0.76 to 0.83

5 values • 4 distinct

Age

2.60 Gyr

0.50 to 2.60

7 values • 6 distinct

Luminosity

-0.46 log(Lsun)

-0.49 to -0.42

4 values • 4 distinct

Distance

3.20 pc

single adopted value

40 values • 1 distinct

Spectral Type

K2.0V

Multiple classifications reported

K2 V (2), K2 V (k) (2), K0 (1), K2.0V (1)

Planets

1

Stable across source rows

1

Scale Comparison

Radius against the Sun

Current adopted radius: 0.77 R☉ • circles scaled linearly by radius

Sun

1.0 R☉ baseline

eps Eri

0.77 R☉

System Layout

Known planets

1 planets linked to this host

eps Eri b

Radial Velocity

◌

Discovery

2000

Period

2680 days

Radius

—

Mass

317.8 M⊕

Eq. Temp

—

Epsilon Eridani: A Nearby Star and Its Giant Planet

Epsilon Eridani is a K-type main-sequence dwarf 10.4 light-years away, with a spectral type of K2.0V. The star is 2.6 billion years old, has 0.86 solar masses, a radius of 0.77 solar radii, and a temperature of 5150 K. Its mass and radius are smaller than the Sun's, and its temperature is cooler than the Sun's. One planet is known to orbit this star.

That planet, eps Eri b, was detected in 2000 using the radial velocity method, which measures the wobble a planet's gravity induces in its star's motion. The planet has a mass of 318 Earth masses and an orbital period of 2680 days. Its mass is larger than Earth's.

Provenance

Underlying measurements and references

Download JSONDownload CSV

Evidence Summary

Rows

40

Stellar refs

25

System refs

1

Distancestable

40 values • 1 distinct

Parallaxstable

40 values • 1 distinct

Temperaturedisputed

7 values • 7 distinct

Massdisputed

10 values • 8 distinct

Radiusdisputed

5 values • 4 distinct

Agedisputed

7 values • 6 distinct

Luminositydisputed

4 values • 4 distinct

Surface Gravitydisputed

6 values • 5 distinct

Metallicitydisputed

6 values • 5 distinct

Spectral Typedisputed

6 values • 4 distinct

ST TEFFST MASSST RADST AGEST LUMST SPECTYPESY DISTStellar RefSystem Ref
—0.82————3.20Thompson et al. 2025TICv8
——————3.20Duncan et al. 1991TICv8
51530.85——-0.49—3.20Sousa et al. 2008TICv8
———1.12——3.20Sanz-Forcada et al. 2010TICv8
——————3.20Duncan et al. 1991TICv8
—————K2 V (k)3.20Gray et al. 2003TICv8
——————3.20Pizzolato et al. 2003TICv8
——————3.20Duncan et al. 1991TICv8
——————3.20Wright et al. 2004TICv8
——————3.20Duncan et al. 1991TICv8
—————K2 V3.20Michigan Catalog, Vol. 5TICv8
——————3.20Duncan et al. 1991TICv8
——————3.20Duncan et al. 1991TICv8
—0.83—0.80——3.20Benedict et al. 2006TICv8
——————3.20Valenti & Fischer 2005TICv8
——————3.20Duncan et al. 1991TICv8
——————3.20Nidever et al. 2002TICv8
——————3.20Duncan et al. 1991TICv8
—————K2 V (k)3.20Gray et al. 2006TICv8
——————3.20Nordstrom et al. 2004TICv8
5136—————3.20Maldonado et al. 2015TICv8
4975—0.83—-0.42—3.20Gaia DR2TICv8
——————3.20Duncan et al. 1991TICv8
—0.78—0.50——3.20Mawet et al. 2019TICv8
50650.850.76—-0.47—3.20TICv8TICv8
—0.860.770.60——3.20Takeda et al. 2007TICv8
——————3.20Duncan et al. 1991TICv8
——————3.20Duncan et al. 1991TICv8
——————3.20Duncan et al. 1991TICv8
——————3.20Duncan et al. 1991TICv8
——————3.20Duncan et al. 1991TICv8
——————3.20Duncan et al. 1991TICv8
——————3.20Duncan et al. 1991TICv8
5098—————3.20Harada et al. 2025TICv8
5020.40.810.76———3.20Rosenthal et al. 2021TICv8
—0.85—1——3.20Hatzes et al. 2000TICv8
——————3.20Henry et al. 1996TICv8
—————K03.20Cannon & Pickering 1918TICv8
51460.860.772.60-0.46K2.0V3.20Turnbull 2015TICv8
—0.82—0.60—K2 V3.20Llop-Sayson et al. 2021TICv8