Temperature
3387 K
3310 to 3901.6
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Stellar HostProfile
GJ 4276
M4.0 • 21.34 pc
Records
4
literature rows
Planets
1
system count
References
5
distinct source labels
TIC: TIC 428238233
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: Nagel et al. 2019 • System source: TICv8
Mass
0.41 Msun
0.40 to 0.41
Radius
0.41 Rsun
0.41 to 0.41
Age
6.90 Gyr
single adopted value
Luminosity
-1.71 log(Lsun)
-1.74 to -1.71
Distance
21.34 pc
single adopted value
Spectral Type
M4.0
Multiple classifications reported
Planets
1
Stable across source rows
Scale Comparison
Radius against the Sun
Current adopted radius: 0.41 R☉ (circles scaled linearly by radius)
Sun
1.0 R☉ baseline
GJ 4276
0.41 R☉
System Layout
Known planets
1 planets linked to this host
GJ 4276 b
Radial Velocity
◌
Discovery
2019
Period
13.35 days
Radius
—
Mass
16.57 M⊕
Eq. Temp
—
GJ 4276 and Its Planet
GJ 4276 is an M4.0 star located 69.6 light-years from us. Its spectral type marks it as a small, cool red dwarf. The star has an age of 6.9 billion years, a mass of 0.406 solar masses, and a radius of 0.407 solar radii. Its temperature is 3390 K. These stellar measurements describe the host star itself, not any wider system.
One planet orbits this star. GJ 4276 b was found in 2019 using the radial velocity method, which detects the wobble a planet's gravity induces in its star's motion. Briefer wobbles recur and reveal the planet and its orbital period. The planet has a minimum mass of 16.6 Earth masses and an orbital period of 13.4 days. That minimum mass is larger than Earth's, and the period is the time the planet takes to complete one orbit.
Provenance
Underlying measurements and references
Evidence Summary
Rows
4
Stellar refs
4
System refs
1
Distancestable
Parallaxstable
Temperaturedisputed
Massdisputed
Radiusdisputed
Agestable
Luminositydisputed
Surface Gravitydisputed
Metallicitystable
Spectral Typedisputed
| ST TEFF | ST MASS | ST RAD | ST AGE | ST LUM | ST SPECTYPE | SY DIST | Stellar Ref | System Ref |
|---|---|---|---|---|---|---|---|---|
| 3310 | 0.40 | 0.41 | — | -1.74 | — | 21.34 | TICv8 | TICv8 |
| 3387 | 0.41 | 0.41 | 6.90 | -1.71 | M4.0 | 21.34 | Nagel et al. 2019 | TICv8 |
| — | — | — | — | — | M4 | 21.34 | Hawley et al. 1996 | TICv8 |
| 3901.6 | — | — | — | — | — | 21.34 | Gaia DR2 | TICv8 |