Temperature
4877 K
4670.8 to 4950
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Stellar HostProfile
eps Tau
K0 III • 47.53 pc
Records
9
literature rows
Planets
1
system count
References
10
distinct source labels
HD: HD 28305HIP: HIP 20889TIC: TIC 17554529
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: Teng et al. 2023 • System source: TICv8
Mass
2.57 Msun
2.46 to 2.73
Radius
12.35 Rsun
12.35 to 16.64
Luminosity
1.89 log(Lsun)
1.89 to 2.07
Distance
47.53 pc
single adopted value
Spectral Type
K0 III
Multiple classifications reported
Planets
1
Stable across source rows
Scale Comparison
Radius against the Sun
Current adopted radius: 12.35 R☉ (circles scaled linearly by radius)
Sun
1.0 R☉ baseline
eps Tau
12.35 R☉
System Layout
Known planets
1 planets linked to this host
eps Tau b
Radial Velocity
◌
Discovery
2006
Period
585.8 days
Radius
—
Mass
2285.2 M⊕
Eq. Temp
—
eps Tau and Its Planet
eps Tau is a K0 III star located 155 light-years away. Its reported mass is 2.57 solar masses and its radius is 12.4 solar radii, both larger than the Sun's. The star's temperature is 4880 K, cooler than the Sun's.
One planet orbits eps Tau. eps Tau b was discovered in 2006 using the radial velocity method, which measures the wobble a planet's gravity induces in its star's motion. The planet's minimum mass is 2290 Earth masses, a lower bound on its true mass, and its orbital period is 586 days. Its minimum mass is larger than Earth's and roughly 7.19 times Jupiter's mass.
Provenance
Underlying measurements and references
Evidence Summary
Rows
9
Stellar refs
9
System refs
1
Distancestable
Parallaxstable
Temperaturedisputed
Massdisputed
Radiusdisputed
Luminositydisputed
Surface Gravitydisputed
Metallicitydisputed
Spectral Typedisputed
| ST TEFF | ST MASS | ST RAD | ST AGE | ST LUM | ST SPECTYPE | SY DIST | Stellar Ref | System Ref |
|---|---|---|---|---|---|---|---|---|
| 4670.8 | — | 16.64 | — | 2.07 | — | 47.53 | Gaia DR2 | TICv8 |
| — | — | — | — | — | K0 III | 47.53 | Garrison & Beattie 1998 | TICv8 |
| 4932.6 | — | — | — | — | — | 47.53 | TICv8 | TICv8 |
| 4901 | 2.70 | 13.70 | — | 1.99 | — | 47.53 | Sato et al. 2007 | TICv8 |
| 4877 | 2.57 | 12.35 | — | 1.89 | K0 III | 47.53 | Teng et al. 2023 | TICv8 |
| 4950 | 2.46 | — | — | — | — | 47.53 | Arentoft et al. 2019 | TICv8 |
| — | — | — | — | — | K0 | 47.53 | Cannon & Pickering 1918 | TICv8 |
| 4946 | 2.73 | — | — | — | — | 47.53 | Mortier et al. 2013 | TICv8 |
| — | 2.70 | — | — | — | — | 47.53 | Kunitomo et al. 2011 | TICv8 |