Temperature
5901 K
5855 to 6003
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Stellar HostProfile
HD 117618
Unclassified star • 37.78 pc
Records
14
literature rows
Planets
1
system count
References
15
distinct source labels
TIC: TIC 243194645HD: HD 117618HIP: HIP 66047
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
1.05 Msun
1.05 to 1.17
Radius
1.18 Rsun
1.18 to 1.20
Age
6 Gyr
5.60 to 6
Luminosity
0.18 log(Lsun)
0.18 to 0.21
Distance
37.78 pc
single adopted value
Planets
1
Stable across source rows
Scale Comparison
Radius against the Sun
Current adopted radius: 1.18 R☉ (circles scaled linearly by radius)
Sun
1.0 R☉ baseline
HD 117618
1.18 R☉
System Layout
Known planets
1 planets linked to this host
HD 117618 b
Radial Velocity
◌
Discovery
2004
Period
25.80 days
Radius
—
Mass
55.30 M⊕
Eq. Temp
—
HD 117618 and Its Lone Known Planet
HD 117618 is a Sun-like star of spectral type G2 V, located 123 light-years away. It is one of the single known planet hosts of its kind, with its planetary companion announced in 2004. The star is estimated to be 6 billion years old, holds 1.05 solar masses, and has a radius of 1.18 solar radii. Its temperature of 5900 K is hotter than the Sun's, just as its reported radius estimate is larger than the Sun's.
The one known planet is HD 117618 b, discovered by the radial velocity method, which detects the wobble a planet's gravity induces in its star's motion. Repeated wobbles reveal both the planet and its orbital period. HD 117618 b has a minimum mass of 55.3 Earth masses, a lower bound on its true mass and larger than Earth's, and it completes an orbit in 25.8 days.
Provenance
Underlying measurements and references
Evidence Summary
Rows
14
Stellar refs
14
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 |
|---|---|---|---|---|---|---|---|---|
| — | — | — | — | — | G0 | 37.78 | Cannon & Pickering 1918 | TICv8 |
| — | 1.07 | 1.20 | 5.68 | — | — | 37.78 | Takeda et al. 2007 | TICv8 |
| 5901 | 1.05 | 1.18 | 6 | 0.18 | — | 37.78 | Ghezzi et al. 2010 | TICv8 |
| — | — | — | — | — | — | 37.78 | Nordstrom et al. 2004 | TICv8 |
| 5974 | — | 1.19 | — | 0.21 | — | 37.78 | Gaia DR2 | TICv8 |
| 6003 | — | — | — | — | — | 37.78 | Suárez-Andrés et al. 2016 | TICv8 |
| — | — | — | — | — | G2 V | 37.78 | Michigan Catalog, Vol. 2 | TICv8 |
| 5995.7 | 1.10 | 1.18 | — | 0.21 | — | 37.78 | TICv8 | TICv8 |
| — | — | — | — | — | — | 37.78 | Valenti & Fischer 2005 | TICv8 |
| 5990 | 1.08 | — | — | 0.20 | — | 37.78 | Sousa et al. 2008 | TICv8 |
| — | — | — | — | — | G0 V | 37.78 | Gray et al. 2006 | TICv8 |
| 5855 | 1.05 | — | 5.60 | — | G2 V | 37.78 | Tinney et al. 2005 | TICv8 |
| 5977 | 1.17 | 1.20 | — | — | — | 37.78 | Stassun et al. 2017 | TICv8 |
| 5990 | 1.08 | — | — | — | — | 37.78 | Wittenmyer et al. 2019 | TICv8 |