Temperature
4820.6 K
4792 to 4881
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Stellar HostProfile
HD 103949
Unclassified star • 26.50 pc
Records
8
literature rows
Planets
1
system count
References
9
distinct source labels
TIC: TIC 428657118HD: HD 103949HIP: HIP 58374
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: TICv8 • System source: TICv8
Mass
0.78 Msun
0.71 to 0.78
Radius
0.74 Rsun
0.72 to 0.75
Luminosity
-0.57 log(Lsun)
-0.62 to -0.57
Distance
26.50 pc
single adopted value
Planets
1
Stable across source rows
Scale Comparison
Radius against the Sun
Current adopted radius: 0.74 R☉ (circles scaled linearly by radius)
Sun
1.0 R☉ baseline
HD 103949
0.74 R☉
System Layout
Known planets
1 planets linked to this host
HD 103949 b
Radial Velocity
◌
Discovery
2019
Period
120.9 days
Radius
—
Mass
11.20 M⊕
Eq. Temp
—
HD 103949 b: A Minimum-Mass Planet Orbiting a Cool Dwarf
HD 103949 is a K3 V star, a classification that places it among the cooler, orange-hued main-sequence stars. It lies 86.4 light-years from us and hosts a single known planet. The star's reported mass estimate is smaller than the Sun's, at 0.78 solar masses, and its reported radius estimate is also smaller, at 0.741 solar radii. Its reported temperature is cooler than the Sun's, at 4820 K.
The one known planet is HD 103949 b, discovered in 2019 by the radial velocity method, which measures the wobble a planet's gravity induces in its star's motion. Its minimum mass is 11.2 Earth masses, larger than Earth's, meaning its true mass is at least this value. The planet completes an orbit in 121 days.
Provenance
Underlying measurements and references
Evidence Summary
Rows
8
Stellar refs
8
System refs
1
Distancestable
Parallaxstable
Temperaturedisputed
Massdisputed
Radiusdisputed
Luminositydisputed
Surface Gravitydisputed
Metallicitystable
Spectral Typedisputed
| ST TEFF | ST MASS | ST RAD | ST AGE | ST LUM | ST SPECTYPE | SY DIST | Stellar Ref | System Ref |
|---|---|---|---|---|---|---|---|---|
| — | — | — | — | — | K2 | 26.50 | Cannon & Pickering 1918 | TICv8 |
| 4792 | 0.77 | — | — | — | K3 V | 26.50 | Feng et al. 2019 | TICv8 |
| — | — | — | — | — | K3 V | 26.50 | Michigan Catalog, Vol. 4 | TICv8 |
| — | — | — | — | — | K3 V | 26.50 | Gray et al. 2006 | TICv8 |
| 4820.6 | 0.78 | 0.74 | — | -0.57 | — | 26.50 | TICv8 | TICv8 |
| 4848 | 0.71 | 0.72 | — | -0.58 | K3V | 26.50 | Turnbull 2015 | TICv8 |
| 4881 | 0.76 | — | — | -0.62 | — | 26.50 | Sousa et al. 2008 | TICv8 |
| 4792.2 | — | 0.75 | — | -0.57 | — | 26.50 | Gaia DR2 | TICv8 |