Temperature
4760 K
4585 to 4760
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Stellar HostProfile
eps Ind A
K5 V • 3.64 pc
Records
14
literature rows
Planets
1
system count
References
15
distinct source labels
HIP: HIP 108870TIC: TIC 231698181HD: HD 209100
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: Matthews et al. 2024 • System source: TICv8
Mass
0.76 Msun
0.61 to 0.80
Radius
0.68 Rsun
0.68 to 0.78
Age
3.50 Gyr
3.48 to 4.70
Distance
3.64 pc
single adopted value
Spectral Type
K5 V
Multiple classifications reported
Planets
1
Stable across source rows
Scale Comparison
Radius against the Sun
Current adopted radius: 0.68 R☉ (circles scaled linearly by radius)
Sun
1.0 R☉ baseline
eps Ind A
0.68 R☉
System Layout
Known planets
1 planets linked to this host
eps Ind A b
Radial Velocity
◌
Discovery
2019
Period
25450 days
Radius
—
Mass
2065.9 M⊕
Eq. Temp
—
eps Ind A and Its Planet
Epsilon Indi A is a K5 V star 11.9 light-years away. Its spectral type marks it as a main-sequence dwarf. The star is 3.5 billion years old, with a mass of 0.76 solar masses and a radius of 0.679 solar radii, both smaller than the Sun's, and a temperature of 4760 K, cooler than the Sun's.
One planet is known to orbit this host, eps Ind A b, discovered in 2019 by the radial velocity method, which detects the wobble a planet's gravity induces in its star's motion. The planet has a mass of 2070 Earth masses, roughly 6.5 times Jupiter's mass and larger than Earth's, and an orbital period of 25500 days.
Provenance
Underlying measurements and references
Evidence Summary
Rows
14
Stellar refs
14
System refs
1
Distancestable
Parallaxstable
Temperaturedisputed
Massdisputed
Radiusdisputed
Agedisputed
Luminositydisputed
Surface Gravitydisputed
Metallicitydisputed
Spectral Typedisputed
| ST TEFF | ST MASS | ST RAD | ST AGE | ST LUM | ST SPECTYPE | SY DIST | Stellar Ref | System Ref |
|---|---|---|---|---|---|---|---|---|
| — | — | — | — | — | — | 3.64 | Nordstrom et al. 2004 | TICv8 |
| — | — | — | — | — | K4 V (k) | 3.64 | Gray et al. 2006 | TICv8 |
| — | 0.75 | — | 4.70 | -0.62 | K2 V | 3.64 | Feng et al. 2019 | TICv8 |
| — | — | — | — | — | K5 | 3.64 | Cannon & Pickering 1918 | TICv8 |
| — | 0.78 | — | — | — | — | 3.64 | Matthews et al. 2026 | TICv8 |
| 4683 | 0.68 | 0.72 | — | -0.64 | K4V | 3.64 | Turnbull 2015 | TICv8 |
| 4585 | — | 0.78 | — | -0.62 | — | 3.64 | Gaia DR2 | TICv8 |
| — | — | — | — | — | — | 3.64 | Pizzolato et al. 2003 | TICv8 |
| 4754 | 0.61 | — | — | -0.69 | — | 3.64 | Sousa et al. 2008 | TICv8 |
| 4760 | 0.76 | 0.68 | 3.50 | — | K5 V | 3.64 | Matthews et al. 2024 | TICv8 |
| 4700 | 0.80 | 0.71 | 3.48 | — | K5 V | 3.64 | Sanghi et al. 2026 | TICv8 |
| 4611.1 | 0.73 | 0.74 | — | -0.65 | — | 3.64 | TICv8 | TICv8 |
| — | — | — | — | — | — | 3.64 | Henry et al. 1996 | TICv8 |
| — | — | — | — | — | K4/5 V | 3.64 | Michigan Catalog, Vol. 1 | TICv8 |