Temperature
3428 K
3323 to 3816
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Stellar HostProfile
GJ 422
Unclassified star • 12.66 pc
Records
7
literature rows
Planets
1
system count
References
8
distinct source labels
HIP: HIP 55042HD: HD 304043TIC: TIC 450545735
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: TICv8 • System source: TICv8
Mass
0.36 Msun
0.35 to 0.36
Radius
0.37 Rsun
0.37 to 0.38
Luminosity
-1.77 log(Lsun)
-1.96 to -1.70
Distance
12.66 pc
single adopted value
Planets
1
Stable across source rows
Scale Comparison
Radius against the Sun
Current adopted radius: 0.37 R☉ • circles scaled linearly by radius
Sun
1.0 R☉ baseline
GJ 422
0.37 R☉
System Layout
Known planets
1 planets linked to this host
GJ 422 b
Radial Velocity
◌
Discovery
2014
Period
20.13 days
Radius
—
Mass
11.07 M⊕
Eq. Temp
—
GJ 422 and Its Planet
GJ 422 is a small, cool red dwarf of spectral type M3.5 V, located 41.3 light-years away. Its mass is 0.358 solar masses and its radius is 0.37 solar radii, both smaller than the Sun's, and its temperature of 3430 K is cooler than the Sun's. One planet orbits this host.
That planet is GJ 422 b, discovered in 2014 by the radial velocity method, which measures the wobble a planet's gravity induces in its star's motion. Its minimum mass is 11.1 Earth masses, larger than Earth's, and its orbital period is 20.1 days.
Provenance
Underlying measurements and references
Evidence Summary
Rows
7
Stellar refs
7
System refs
1
Distancestable
Parallaxstable
Temperaturedisputed
Massdisputed
Radiusdisputed
Luminositydisputed
Surface Gravitystable
Spectral Typedisputed
| ST TEFF | ST MASS | ST RAD | ST AGE | ST LUM | ST SPECTYPE | SY DIST | Stellar Ref | System Ref |
|---|---|---|---|---|---|---|---|---|
| 3428 | 0.36 | 0.37 | — | -1.77 | — | 12.66 | TICv8 | TICv8 |
| 3323 | 0.35 | — | — | -1.96 | M3.5 V | 12.66 | Tuomi et al. 2014 | TICv8 |
| 3419 | 0.36 | 0.38 | — | -1.70 | M | 12.66 | Turnbull 2015 | TICv8 |
| — | — | — | — | — | M3.5 | 12.66 | Hawley et al. 1996 | TICv8 |
| — | — | — | — | — | A0 | 12.66 | Nesterov et al. 1995 | TICv8 |
| — | 0.35 | — | — | — | — | 12.66 | Feng et al. 2020 | TICv8 |
| 3816 | — | — | — | — | — | 12.66 | Gaia DR2 | TICv8 |