Temperature
4120 K
4060 to 4205.9
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Stellar HostProfile
GJ 414 A
K7 V • 11.89 pc
Records
9
literature rows
Planets
2
system count
References
10
distinct source labels
HIP: HIP 54646HD: HD 97101TIC: TIC 9001920
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: Dedrick et al. 2021 • System source: TICv8
Mass
0.65 Msun
0.59 to 0.69
Radius
0.68 Rsun
0.67 to 0.75
Age
12.40 Gyr
single adopted value
Luminosity
-0.92 log(Lsun)
-0.92 to -0.86
Distance
11.89 pc
single adopted value
Spectral Type
K7 V
Multiple classifications reported
Planets
2
Stable across source rows
Scale Comparison
Radius against the Sun
Current adopted radius: 0.68 R☉ (circles scaled linearly by radius)
Sun
1.0 R☉ baseline
GJ 414 A
0.68 R☉
System Layout
Known planets
2 planets linked to this host
GJ 414 A b
Radial Velocity
◌
Discovery
2021
Period
50.80 days
Radius
2.63 R⊕
Mass
7.60 M⊕
Eq. Temp
308.6 K
GJ 414 A c
Radial Velocity
◌
Discovery
2021
Period
749.8 days
Radius
8.40 R⊕
Mass
53.83 M⊕
Eq. Temp
124.7 K
GJ 414 A and Its Two Known Planets
GJ 414 A is a K7 V star located 38.8 light-years away. Its spectral type marks it as a cooler, less massive star than the Sun, and the measurements bear this out: it has a mass of 0.65 solar masses, a radius of 0.68 solar radii, and a temperature of 4120 K. It is also ancient, with an age of 12.4 billion years. Two planets have been discovered around this host.
Both planets were discovered in 2021 using the radial velocity method, which detects the wobble a planet's gravity induces in its star's motion. The planet GJ 414 A b is a Neptune-like world with a minimum mass of 7.6 Earth masses and a radius of 2.63 Earth radii. It completes one orbit in 50.8 days. The planet GJ 414 A c is Jupiter-like, with a minimum mass of 53.8 Earth masses and a radius of 8.4 Earth radii. Its orbital period is 750 days. Both planets are larger and more massive than Earth by the reported estimates.
Among the listed planets, GJ 414 A b has the shortest year and the smallest radius and minimum mass, while GJ 414 A c has the longest year and the largest radius and minimum mass. The star's reported mass and radius are smaller than the Sun's, and its temperature is cooler.
Provenance
Underlying measurements and references
Evidence Summary
Rows
9
Stellar refs
9
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 |
|---|---|---|---|---|---|---|---|---|
| 4060 | 0.64 | 0.75 | — | -0.86 | — | 11.89 | TICv8 | TICv8 |
| — | — | — | — | — | — | 11.89 | Nordstrom et al. 2004 | TICv8 |
| 4135.7 | — | 0.71 | — | -0.88 | — | 11.89 | Gaia DR2 | TICv8 |
| — | — | — | — | — | K7 V | 11.89 | Gray et al. 2003 | TICv8 |
| 4085 | 0.59 | 0.72 | — | -0.89 | K8V | 11.89 | Turnbull 2015 | TICv8 |
| — | — | — | — | — | — | 11.89 | Nidever et al. 2002 | TICv8 |
| — | — | — | — | — | — | 11.89 | Wright et al. 2004 | TICv8 |
| 4120 | 0.65 | 0.68 | 12.40 | -0.92 | K7 V | 11.89 | Dedrick et al. 2021 | TICv8 |
| 4205.9 | 0.69 | 0.67 | — | — | — | 11.89 | Rosenthal et al. 2021 | TICv8 |