Temperature
5640 K
5640 to 5685
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Stellar HostProfile
HD 47186
Unclassified star • 37.46 pc
Records
10
literature rows
Planets
2
system count
References
11
distinct source labels
HD: HD 47186HIP: HIP 31540TIC: TIC 101145648
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
1 Msun
0.96 to 1
Radius
1.13 Rsun
1.08 to 1.13
Age
6.50 Gyr
single adopted value
Luminosity
0.07 log(Lsun)
0.03 to 0.07
Distance
37.46 pc
single adopted value
Planets
2
Stable across source rows
Scale Comparison
Radius against the Sun
Current adopted radius: 1.13 R☉ (circles scaled linearly by radius)
Sun
1.0 R☉ baseline
HD 47186
1.13 R☉
System Layout
Known planets
2 planets linked to this host
HD 47186 b
Radial Velocity
◌
Discovery
2008
Period
4.08 days
Radius
—
Mass
22.25 M⊕
Eq. Temp
—
HD 47186 c
Radial Velocity
◌
Discovery
2008
Period
1353.6 days
Radius
—
Mass
111.4 M⊕
Eq. Temp
—
HD 47186 and Its Two Known Planets
HD 47186 is a G5 V star 122 light-years away, with two planets reported to orbit it. The Sun-like star has a mass of 1 solar masses and a radius of 1.13 solar radii, larger than the Sun's. Its temperature is 5640 K, cooler than the Sun's, and its age is 6.5 billion years.
Both planets were found in 2008 by 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 47186 b has a minimum mass of 22.2 Earth masses and an orbital period of 4.08 days. HD 47186 c has a minimum mass of 111 Earth masses and an orbital period of 1350 days. A minimum mass is a lower bound on a planet's true mass. Each planet's minimum mass is larger than Earth's. Among the listed planets, HD 47186 b has the shortest year by reported estimates, and HD 47186 c has the longest year by reported estimates. HD 47186 b also has the smallest minimum mass among the listed planets, while HD 47186 c has the largest.
Provenance
Underlying measurements and references
Evidence Summary
Rows
10
Stellar refs
10
System refs
1
Distancestable
Parallaxstable
Temperaturedisputed
Massdisputed
Radiusdisputed
Agestable
Luminositydisputed
Surface Gravitydisputed
Metallicitydisputed
Spectral Typedisputed
| ST TEFF | ST MASS | ST RAD | ST AGE | ST LUM | ST SPECTYPE | SY DIST | Stellar Ref | System Ref |
|---|---|---|---|---|---|---|---|---|
| 5675 | 0.99 | — | — | 0.03 | — | 37.46 | Sousa et al. 2008 | TICv8 |
| 5640 | 1 | 1.13 | 6.50 | 0.07 | — | 37.46 | Ghezzi et al. 2010 | TICv8 |
| 5641 | 1 | 1.10 | — | 0.04 | — | 37.46 | TICv8 | TICv8 |
| 5685 | — | 1.08 | — | 0.04 | — | 37.46 | Gaia DR2 | TICv8 |
| — | — | — | — | — | G5 V | 37.46 | Michigan Catalog, Vol. 3 | TICv8 |
| — | — | — | — | — | G5 | 37.46 | Cannon & Pickering 1918 | TICv8 |
| — | — | — | — | — | G6 V | 37.46 | Gray et al. 2006 | TICv8 |
| — | — | — | — | — | — | 37.46 | Nordstrom et al. 2004 | TICv8 |
| — | — | — | — | — | — | 37.46 | Bouchy et al. 2009 | TICv8 |
| 5657 | 0.96 | 1.08 | — | — | — | 37.46 | Stassun et al. 2017 | TICv8 |