Temperature
5045 K
5045 to 5257.5
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Stellar HostProfile
GJ 3222
K0V • 18.24 pc
Records
8
literature rows
Planets
1
system count
References
9
distinct source labels
HD: HD 21175HIP: HIP 15799TIC: TIC 160004049
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
0.86 Msun
0.86 to 0.89
Radius
0.98 Rsun
0.93 to 0.98
Luminosity
-0.25 log(Lsun)
single adopted value
Distance
18.24 pc
single adopted value
Spectral Type
K0V
Multiple classifications reported
Planets
1
Stable across source rows
Scale Comparison
Radius against the Sun
Current adopted radius: 0.98 R☉ (circles scaled linearly by radius)
Sun
1.0 R☉ baseline
GJ 3222
0.98 R☉
System Layout
Known planets
1 planets linked to this host
GJ 3222 b
Radial Velocity
◌
Discovery
2022
Period
10.67 days
Radius
—
Mass
11.44 M⊕
Eq. Temp
—
GJ 3222 and Its Planet
GJ 3222 is a K0V star 59.5 light-years from Earth. Its spectral type places it in the K class, cooler and redder than the Sun's G type, with the trailing V marking a main-sequence dwarf. The star's reported mass estimate is 0.86 solar masses, smaller than the Sun's, and its reported radius estimate is 0.98 solar radii, also smaller than the Sun's. Its reported temperature is 5050 K, cooler than the Sun's. One planet is known to orbit this host.
That planet, GJ 3222 b, was discovered in 2022 by the radial velocity method, which measures the wobble a planet's gravity induces in its star's motion. Its minimum mass is 11.4 Earth masses, a lower bound on its true mass and larger than Earth's. It completes one orbit every 10.7 days.
Provenance
Underlying measurements and references
Evidence Summary
Rows
8
Stellar refs
8
System refs
1
Distancestable
Parallaxstable
Temperaturedisputed
Massdisputed
Radiusdisputed
Luminositystable
Surface Gravitystable
Metallicitystable
Spectral Typedisputed
| ST TEFF | ST MASS | ST RAD | ST AGE | ST LUM | ST SPECTYPE | SY DIST | Stellar Ref | System Ref |
|---|---|---|---|---|---|---|---|---|
| — | — | — | — | — | — | 18.24 | Henry et al. 1996 | TICv8 |
| 5257.5 | — | 0.93 | — | — | — | 18.24 | TICv8 | TICv8 |
| 5045 | 0.86 | 0.98 | — | -0.25 | K0V | 18.24 | Turnbull 2015 | TICv8 |
| — | — | — | — | — | K0 V | 18.24 | Michigan Catalog, Vol. 2 | TICv8 |
| — | — | — | — | — | K1 V | 18.24 | Gray et al. 2006 | TICv8 |
| — | — | — | — | — | — | 18.24 | Nordstrom et al. 2004 | TICv8 |
| — | 0.89 | — | — | — | — | 18.24 | Feng et al. 2022 | TICv8 |
| — | — | — | — | — | G0 | 18.24 | Cannon & Pickering 1918 | TICv8 |