Temperature
5508 K
5476.8 to 5508
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Stellar HostProfile
HD 43197
G8 V • 62.41 pc
Records
6
literature rows
Planets
2
system count
References
7
distinct source labels
HIP: HIP 29550HD: HD 43197TIC: TIC 37660988
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: Naef et al. 2010 • System source: TICv8
Mass
0.96 Msun
single adopted value
Radius
1 Rsun
1 to 1.07
Luminosity
-0.14 log(Lsun)
-0.14 to -0.03
Distance
62.41 pc
single adopted value
Spectral Type
G8 V
Multiple classifications reported
Planets
2
Stable across source rows
Scale Comparison
Radius against the Sun
Current adopted radius: 1 R☉ (circles scaled linearly by radius)
Sun
1.0 R☉ baseline
HD 43197
1 R☉
System Layout
Known planets
2 planets linked to this host
HD 43197 b
Radial Velocity
◌
Discovery
2010
Period
308.9 days
Radius
—
Mass
175.8 M⊕
Eq. Temp
—
HD 43197 c
Radial Velocity
◌
Discovery
2022
Period
9296.0 days
Radius
—
Mass
2500.7 M⊕
Eq. Temp
—
HD 43197 and Its Two Known Planets
HD 43197 is a G8 V star 204 light-years away. Its temperature is 5510 K, and its reported temperature is cooler than the Sun's. The star's mass estimate is 0.96 solar masses, smaller than the Sun's, and its radius is 1 solar radii.
Two planets are known to orbit HD 43197. HD 43197 b was discovered in 2010 by the radial velocity method, which measures the wobble a planet's gravity induces in its star's motion. It has a minimum mass of 176 Earth masses, larger than Earth's, and an orbital period of 309 days, the shortest year among the listed planets. HD 43197 c was discovered in 2022, also by radial velocity. Its mass estimate is 2500 Earth masses, larger than Earth's and roughly 7.87 times Jupiter's mass. Its orbital period is 9300 days, the longest year among the listed planets.
Provenance
Underlying measurements and references
Evidence Summary
Rows
6
Stellar refs
6
System refs
1
Distancestable
Parallaxstable
Temperaturedisputed
Massstable
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 |
|---|---|---|---|---|---|---|---|---|
| 5478.6 | 0.96 | 1.07 | — | -0.04 | — | 62.41 | TICv8 | TICv8 |
| — | 0.96 | — | — | — | — | 62.41 | Feng et al. 2022 | TICv8 |
| 5508 | 0.96 | 1 | — | -0.14 | G8 V | 62.41 | Naef et al. 2010 | TICv8 |
| — | — | — | — | — | G5 | 62.41 | Cannon & Pickering 1918 | TICv8 |
| — | — | — | — | — | G8/K0 IV/V | 62.41 | Michigan Catalog, Vol. 3 | TICv8 |
| 5476.8 | — | 1.07 | — | -0.03 | — | 62.41 | Gaia DR2 | TICv8 |