Temperature
5747 K
5716.6 to 5830
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Stellar HostProfile
HD 42618
G4V • 24.34 pc
Records
12
literature rows
Planets
1
system count
References
13
distinct source labels
TIC: TIC 153289168HIP: HIP 29432HD: HD 42618
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: Turnbull 2015 • System source: TICv8
Mass
0.97 Msun
0.92 to 1.03
Radius
0.95 Rsun
0.95 to 1.00
Age
3.72 Gyr
single adopted value
Luminosity
-0.05 log(Lsun)
-0.05 to -8.77e-3
Distance
24.34 pc
single adopted value
Spectral Type
G4V
Multiple classifications reported
Planets
1
Stable across source rows
Scale Comparison
Radius against the Sun
Current adopted radius: 0.95 R☉ (circles scaled linearly by radius)
Sun
1.0 R☉ baseline
HD 42618
0.95 R☉
System Layout
Known planets
1 planets linked to this host
HD 42618 b
Radial Velocity
◌
Discovery
2016
Period
149.6 days
Radius
—
Mass
14.40 M⊕
Eq. Temp
337 K
HD 42618 and Its Planet
HD 42618 is a G4V star 79.4 light-years from Earth, a Sun-like dwarf with a reported mass of 0.97 solar masses, a radius of 0.95 solar radii, and a temperature of 5750 K. It is 3.72 billion years old. Both its mass and radius estimates are smaller than the Sun's, and its temperature is cooler than the Sun's. One planet orbits this host.
That planet, HD 42618 b, was discovered in 2016 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 42618 b has a minimum mass of 14.4 Earth masses, larger than Earth's, and an orbital period of 150 days. Its minimum mass is a lower bound on its true mass, and 150 days is the time it takes to complete one orbit.
Provenance
Underlying measurements and references
Evidence Summary
Rows
12
Stellar refs
12
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 |
|---|---|---|---|---|---|---|---|---|
| — | 0.97 | 0.95 | 3.72 | — | — | 24.34 | Takeda et al. 2007 | TICv8 |
| — | — | — | — | — | — | 24.34 | Nidever et al. 2002 | TICv8 |
| 5830 | — | 0.95 | — | -0.03 | — | 24.34 | Gaia DR2 | TICv8 |
| 5747 | 0.97 | 0.95 | 3.72 | -0.05 | G4V | 24.34 | Turnbull 2015 | TICv8 |
| — | — | — | — | — | — | 24.34 | Nordstrom et al. 2004 | TICv8 |
| 5716.6 | 0.92 | 0.99 | — | — | — | 24.34 | Rosenthal et al. 2021 | TICv8 |
| — | — | — | — | — | G3 V | 24.34 | Gray et al. 2003 | TICv8 |
| — | — | — | — | — | — | 24.34 | Valenti & Fischer 2005 | TICv8 |
| — | — | — | — | — | — | 24.34 | Wright et al. 2004 | TICv8 |
| 5755 | 1.03 | 0.97 | — | -0.03 | — | 24.34 | TICv8 | TICv8 |
| — | — | — | — | — | G0 | 24.34 | Cannon & Pickering 1918 | TICv8 |
| 5727 | 1.01 | 1.00 | — | -8.77e-3 | G4 V | 24.34 | Fulton et al. 2016 | TICv8 |