Temperature
5742 K
5690 to 5835
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Stellar HostProfile
HD 6434
Unclassified star • 42.36 pc
Records
10
literature rows
Planets
1
system count
References
11
distinct source labels
HD: HD 6434HIP: HIP 5054TIC: TIC 180871947
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: Ghezzi et al. 2010 • System source: TICv8
Mass
0.75 Msun
0.75 to 1.10
Radius
1.09 Rsun
1.09 to 1.14
Age
13 Gyr
3.80 to 13
Luminosity
0.06 log(Lsun)
0.05 to 0.10
Distance
42.36 pc
single adopted value
Planets
1
Stable across source rows
Scale Comparison
Radius against the Sun
Current adopted radius: 1.09 R☉ (circles scaled linearly by radius)
Sun
1.0 R☉ baseline
HD 6434
1.09 R☉
System Layout
Known planets
1 planets linked to this host
HD 6434 b
Radial Velocity
◌
Discovery
2003
Period
22.00 days
Radius
—
Mass
155.7 M⊕
Eq. Temp
—
HD 6434 and Its Lone Known Planet
HD 6434 is a G0 star located 138 light-years away. Its reported mass is 0.75 solar masses, its radius is 1.09 solar radii, and its temperature is 5740 K. The star's reported mass estimate is smaller than the Sun's, and its reported temperature is cooler than the Sun's. A reported lower limit places its age at 13 billion years.
One planet orbits this host. HD 6434 b was found in 2003 by the radial velocity method, which detects the wobble a planet's gravity induces in its star's motion; repeated wobbles reveal the planet and its orbital period. The planet's minimum mass is 156 Earth masses, larger than Earth's, and its orbital period is 22 days.
Provenance
Underlying measurements and references
Evidence Summary
Rows
10
Stellar refs
10
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 |
|---|---|---|---|---|---|---|---|---|
| 5742 | 0.75 | 1.09 | 13 | 0.06 | — | 42.36 | Ghezzi et al. 2010 | TICv8 |
| — | — | — | — | — | G2/3 V | 42.36 | Michigan Catalog, Vol. 2 | TICv8 |
| — | — | — | — | — | G0 | 42.36 | Cannon & Pickering 1918 | TICv8 |
| 5769 | 1.10 | 1.12 | — | — | — | 42.36 | Stassun et al. 2017 | TICv8 |
| 5776.3 | 1.04 | 1.12 | — | 0.10 | — | 42.36 | TICv8 | TICv8 |
| 5835 | 0.79 | — | 3.80 | 0.05 | — | 42.36 | Mayor et al. 2004 | TICv8 |
| 5690 | 0.89 | 1.14 | 11.27 | — | — | 42.36 | Hinkel et al. 2015 | TICv8 |
| 5768 | — | 1.13 | — | 0.10 | — | 42.36 | Gaia DR2 | TICv8 |
| 5835 | 0.82 | — | — | — | — | 42.36 | Santos et al. 2004 | TICv8 |
| — | — | — | — | — | — | 42.36 | Nordstrom et al. 2004 | TICv8 |