Temperature
4912 K
4912 to 5034
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Stellar HostProfile
HD 10442
K0 IV • 135.4 pc
Records
6
literature rows
Planets
1
system count
References
7
distinct source labels
HD: HD 10442TIC: TIC 380908091
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: Ment et al. 2018 • System source: TICv8
Mass
1.01 Msun
1.01 to 2.58
Radius
1.97 Rsun
1.97 to 5.32
Age
10.65 Gyr
single adopted value
Luminosity
0.31 log(Lsun)
0.31 to 1.15
Distance
135.4 pc
single adopted value
Spectral Type
K0 IV
Multiple classifications reported
Planets
1
Stable across source rows
Scale Comparison
Radius against the Sun
Current adopted radius: 1.97 R☉ (circles scaled linearly by radius)
Sun
1.0 R☉ baseline
HD 10442
1.97 R☉
System Layout
Known planets
1 planets linked to this host
HD 10442 b
Radial Velocity
◌
Discovery
2014
Period
1032.3 days
Radius
—
Mass
472.6 M⊕
Eq. Temp
—
HD 10442 and Its Planet
HD 10442 is a K0 IV star located 442 light-years away. It has one known planet. The star's reported mass is 1.01 solar masses and its radius is 1.97 solar radii, larger than the Sun's. Its temperature is 4910 K, cooler than the Sun's, and its age is 10.7 billion years.
The planet HD 10442 b was discovered in 2014 using the radial velocity method, which measures the wobble a planet's gravity induces in its star's motion. Its minimum mass is 473 Earth masses, a lower bound on its true mass and larger than Earth's; it is roughly 1.49 times Jupiter's mass. HD 10442 b completes one orbit every 1030 days.
Provenance
Underlying measurements and references
Evidence Summary
Rows
6
Stellar refs
6
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 |
|---|---|---|---|---|---|---|---|---|
| 4912 | 1.01 | 1.97 | 10.65 | 0.31 | K0 IV | 135.4 | Ment et al. 2018 | TICv8 |
| 5034 | — | 4.93 | — | 1.15 | — | 135.4 | Gaia DR2 | TICv8 |
| 4912 | — | 5.32 | — | — | — | 135.4 | TICv8 | TICv8 |
| 5034 | 2.58 | 4.73 | — | — | — | 135.4 | Stassun et al. 2017 | TICv8 |
| 4912 | 1.01 | 1.97 | — | — | — | 135.4 | Luhn et al. 2019 | TICv8 |
| 5034 | 1.56 | — | — | — | K2 IV | 135.4 | Giguere et al. 2015 | TICv8 |