Temperature
5008 K
4936.6 to 5040
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Stellar HostProfile
HD 181342
K0 III • 120.4 pc
Records
11
literature rows
Planets
1
system count
References
12
distinct source labels
HD: HD 181342TIC: TIC 12192000HIP: HIP 95124
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: Jenkins et al. 2025 • System source: TICv8
Mass
1.64 Msun
1.64 to 2.25
Radius
5.31 Rsun
4.55 to 5.31
Age
2 Gyr
1.56 to 2
Luminosity
1.17 log(Lsun)
1.08 to 1.21
Distance
120.4 pc
single adopted value
Spectral Type
K0 III
Multiple classifications reported
Planets
1
Stable across source rows
Scale Comparison
Radius against the Sun
Current adopted radius: 5.31 R☉ (circles scaled linearly by radius)
Sun
1.0 R☉ baseline
HD 181342
5.31 R☉
System Layout
Known planets
1 planets linked to this host
HD 181342 b
Radial Velocity
◌
Discovery
2009
Period
564.1 days
Radius
—
Mass
807.3 M⊕
Eq. Temp
—
HD 181342 and Its One Known Planet
HD 181342 is a K0 III star 393 light-years away. It is 2 billion years old, holds 1.64 solar masses, spans 5.31 solar radii, and has a temperature of 5010 K. Its reported radius is larger than the Sun's. One planet orbits this host.
That planet, HD 181342 b, was discovered in 2009 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. HD 181342 b has a minimum mass of 807 Earth masses and an orbital period of 564 days, meaning it completes one orbit in that many days. Its minimum mass is larger than Earth's and roughly 2.54 times Jupiter's mass.
Provenance
Underlying measurements and references
Evidence Summary
Rows
11
Stellar refs
11
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 |
|---|---|---|---|---|---|---|---|---|
| 5008 | 1.64 | 5.31 | 2 | 1.17 | K0 III | 120.4 | Jenkins et al. 2025 | TICv8 |
| 4976 | 1.78 | 4.55 | 1.56 | 1.21 | — | 120.4 | Jofré et al. 2015 | TICv8 |
| 4936.6 | — | 5.27 | — | 1.17 | — | 120.4 | Gaia DR2 | TICv8 |
| 4945 | 1.69 | 4.71 | — | — | — | 120.4 | Luhn et al. 2019 | TICv8 |
| 5040 | 1.89 | 5.12 | — | 1.18 | K0 III | 120.4 | Jones et al. 2016 | TICv8 |
| 5014 | 1.84 | 4.60 | 1.80 | 1.08 | — | 120.4 | Johnson et al. 2010 | TICv8 |
| 4965 | 1.70 | — | — | — | — | 120.4 | Mortier et al. 2013 | TICv8 |
| 4945 | — | 5.30 | — | — | — | 120.4 | TICv8 | TICv8 |
| — | — | — | — | — | K0 | 120.4 | Cannon & Pickering 1918 | TICv8 |
| 5005 | 2.25 | 5.09 | — | — | — | 120.4 | Stassun et al. 2017 | TICv8 |
| — | — | — | — | — | K0 III | 120.4 | Michigan Catalog, Vol. 4 | TICv8 |