Temperature
3579 K
3545 to 3579
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Stellar HostProfile
GJ 393
M2.0 V • 7.03 pc
Records
7
literature rows
Planets
1
system count
References
8
distinct source labels
TIC: TIC 277888583HIP: HIP 51317
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: Amado et al. 2021 • System source: TICv8
Mass
0.43 Msun
0.40 to 0.43
Radius
0.43 Rsun
0.43 to 0.44
Luminosity
-1.57 log(Lsun)
-1.57 to -1.52
Distance
7.03 pc
single adopted value
Spectral Type
M2.0 V
Multiple classifications reported
Planets
1
Stable across source rows
Scale Comparison
Radius against the Sun
Current adopted radius: 0.43 R☉ (circles scaled linearly by radius)
Sun
1.0 R☉ baseline
GJ 393
0.43 R☉
System Layout
Known planets
1 planets linked to this host
GJ 393 b
Radial Velocity
◌
Discovery
2021
Period
7.03 days
Radius
—
Mass
1.71 M⊕
Eq. Temp
485 K
GJ 393 and Its Planet
GJ 393 is a small, cool red dwarf of spectral type M2.0 V, located 22.9 light-years away. Its reported mass estimate is 0.426 solar masses and its reported radius estimate is 0.426 solar radii, both smaller than the Sun's. The star's reported temperature is 3580 K, cooler than the Sun's. One planet orbits this host.
That planet, GJ 393 b, was discovered in 2021 using the radial velocity method, which measures the wobble a planet's gravity induces in its star's motion. Its minimum mass is 1.71 Earth masses, making it larger than Earth, and it completes one orbit every 7.03 days.
Provenance
Underlying measurements and references
Evidence Summary
Rows
7
Stellar refs
7
System refs
1
Distancestable
Parallaxstable
Temperaturedisputed
Massdisputed
Radiusdisputed
Luminositydisputed
Surface Gravitydisputed
Metallicitystable
Spectral Typedisputed
| ST TEFF | ST MASS | ST RAD | ST AGE | ST LUM | ST SPECTYPE | SY DIST | Stellar Ref | System Ref |
|---|---|---|---|---|---|---|---|---|
| — | — | — | — | — | — | 7.03 | Wright et al. 2004 | TICv8 |
| — | — | — | — | — | — | 7.03 | Duncan et al. 1991 | TICv8 |
| 3545 | 0.40 | 0.44 | — | -1.52 | M2 | 7.03 | Turnbull 2015 | TICv8 |
| — | — | — | — | — | — | 7.03 | Nidever et al. 2002 | TICv8 |
| — | — | — | — | — | M2 | 7.03 | Hawley et al. 1996 | TICv8 |
| 3579 | 0.43 | 0.43 | — | -1.57 | M2.0 V | 7.03 | Amado et al. 2021 | TICv8 |
| 3546 | 0.43 | 0.43 | — | -1.57 | — | 7.03 | TICv8 | TICv8 |