Temperature
4723 K
4723 to 4780
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Stellar HostProfile
HD 222237
K4V • 11.45 pc
Records
12
literature rows
Planets
1
system count
References
13
distinct source labels
HIP: HIP 116745TIC: TIC 277913391HD: HD 222237
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
0.74 Msun
0.48 to 0.76
Radius
0.72 Rsun
0.71 to 0.72
Age
8.80 Gyr
5.28 to 8.80
Luminosity
-0.62 log(Lsun)
-0.67 to -0.62
Distance
11.45 pc
single adopted value
Spectral Type
K4V
Multiple classifications reported
Planets
1
Stable across source rows
Scale Comparison
Radius against the Sun
Current adopted radius: 0.72 R☉ (circles scaled linearly by radius)
Sun
1.0 R☉ baseline
HD 222237
0.72 R☉
System Layout
Known planets
1 planets linked to this host
HD 222237 b
Radial Velocity
◌
Discovery
2024
Period
14892 days
Radius
—
Mass
1649.5 M⊕
Eq. Temp
—
HD 222237 and Its Planet
HD 222237 is a K-type main-sequence star 37.3 light-years from Earth. Its spectral type is K4V, and it has one known planet. The star is 8.8 billion years old, with a mass of 0.74 solar masses and a radius of 0.72 solar radii. Its temperature is 4720 K. The star's reported mass estimate is smaller than the Sun's, and its reported radius estimate is smaller than the Sun's. Its reported temperature is cooler than the Sun's.
The planet HD 222237 b was discovered in 2024 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. It has a mass of 1650 Earth masses and an orbital period of 14900 days. Its reported mass estimate is larger than Earth's and roughly 5.19 times Jupiter's mass.
Provenance
Underlying measurements and references
Evidence Summary
Rows
12
Stellar refs
12
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 |
|---|---|---|---|---|---|---|---|---|
| — | — | — | — | — | K4 V | 11.45 | Michigan Catalog, Vol. 1 | TICv8 |
| 4751 | 0.76 | 0.71 | — | — | K3 V | 11.45 | Piccinini et al. 2026 | TICv8 |
| 4780 | 0.48 | — | — | -0.67 | — | 11.45 | Sousa et al. 2008 | TICv8 |
| — | — | — | — | — | K3+ V | 11.45 | Gray et al. 2006 | TICv8 |
| 4723 | 0.74 | 0.72 | 8.80 | -0.62 | K4V | 11.45 | Turnbull 2015 | TICv8 |
| 4751 | 0.76 | 0.71 | — | — | K3 V | 11.45 | Xiao et al. 2024 | TICv8 |
| — | — | — | — | — | — | 11.45 | Nordstrom et al. 2004 | TICv8 |
| — | — | — | — | — | — | 11.45 | Valenti & Fischer 2005 | TICv8 |
| — | 0.70 | — | — | — | — | 11.45 | An et al. 2025 | TICv8 |
| 4751.6 | 0.76 | 0.71 | — | -0.64 | — | 11.45 | TICv8 | TICv8 |
| — | — | — | — | — | K0 | 11.45 | Cannon & Pickering 1918 | TICv8 |
| — | 0.74 | 0.72 | 5.28 | — | — | 11.45 | Takeda et al. 2007 | TICv8 |