Temperature
6160 K
6125 to 6223.8
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Stellar HostProfile
HD 25171
F8 V • 55.61 pc
Records
7
literature rows
Planets
1
system count
References
8
distinct source labels
HIP: HIP 18387TIC: TIC 237933846HD: HD 25171
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: Moutou et al. 2011 • System source: TICv8
Mass
1.09 Msun
1.08 to 1.20
Radius
1.18 Rsun
1.18 to 1.26
Age
4 Gyr
4 to 4.80
Luminosity
0.28 log(Lsun)
0.28 to 0.30
Distance
55.61 pc
single adopted value
Spectral Type
F8 V
Multiple classifications reported
Planets
1
Stable across source rows
Scale Comparison
Radius against the Sun
Current adopted radius: 1.18 R☉ (circles scaled linearly by radius)
Sun
1.0 R☉ baseline
HD 25171
1.18 R☉
System Layout
Known planets
1 planets linked to this host
HD 25171 b
Radial Velocity
◌
Discovery
2010
Period
1802.3 days
Radius
—
Mass
290.8 M⊕
Eq. Temp
—
HD 25171 b: A Distant World Orbiting an Older Star
HD 25171 is an F8 V star located 181 light-years away. Its spectral type places it among the hotter, more massive stars than the Sun, and its measurements confirm this: the star has an age of 4 billion years, a mass of 1.09 solar masses, a radius of 1.18 solar radii, and a temperature of 6160 K. These stellar properties describe the host star itself, not the entire multi-star system. The star is known to host one planet.
That planet, HD 25171 b, was discovered in 2010 using the radial velocity method, which measures the wobble a planet's gravity induces in its star's motion. Repeated wobbles reveal the planet and its orbital period. HD 25171 b has a minimum mass of 291 Earth masses, meaning its true mass is at least this value, and an orbital period of 1800 days.
The star's reported mass, radius, and temperature are all larger or hotter than the Sun's corresponding values. HD 25171 b's minimum mass is larger than Earth's.
Provenance
Underlying measurements and references
Evidence Summary
Rows
7
Stellar refs
7
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 |
|---|---|---|---|---|---|---|---|---|
| 6127 | — | 1.26 | — | 0.30 | — | 55.61 | Gaia DR2 | TICv8 |
| 6125 | 1.08 | 1.23 | 4.80 | — | — | 55.61 | Barbato et al. 2018 | TICv8 |
| 6160 | 1.09 | 1.18 | 4 | 0.28 | F8 V | 55.61 | Moutou et al. 2011 | TICv8 |
| — | — | — | — | — | F8 | 55.61 | Cannon & Pickering 1918 | TICv8 |
| 6223.8 | 1.20 | 1.21 | — | 0.30 | — | 55.61 | TICv8 | TICv8 |
| — | — | — | — | — | — | 55.61 | Nordstrom et al. 2004 | TICv8 |
| — | — | — | — | — | F8 V | 55.61 | Michigan Catalog, Vol. 1 | TICv8 |