Temperature
3578 K
3411 to 3578
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Stellar HostProfile
K2-400
M3 • 62.38 pc
Records
3
literature rows
Planets
1
system count
References
4
distinct source labels
TIC: TIC 345034874
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: Zink et al. 2021 • System source: TICv8
Mass
0.37 Msun
0.37 to 0.37
Radius
0.38 Rsun
0.38 to 0.38
Distance
62.38 pc
single adopted value
Spectral Type
M3
Consistent across records
Planets
1
Stable across source rows
Scale Comparison
Radius against the Sun
Current adopted radius: 0.38 R☉ (circles scaled linearly by radius)
Sun
1.0 R☉ baseline
K2-400
0.38 R☉
System Layout
Known planets
1 planets linked to this host
K2-400 b
Transit
◌
Discovery
2022
Period
3.87 days
Radius
1.16 R⊕
Mass
—
Eq. Temp
—
K2-400 b: A Close-In World Around a Small Red Dwarf
K2-400 is a star 203 light-years away with a spectral type of M3, making it a small, cool red dwarf. Its mass is 0.374 solar masses and its radius is 0.382 solar radii, while its temperature is 3580 K. One planet orbits this star.
That planet is K2-400 b, an Earth-like world discovered by the transit method in 2022. Its radius is 1.16 Earth radii, which is larger than Earth's. It completes an orbit in 3.87 days, a short period that places it close to its host star.
K2-400 itself is less massive and smaller than the Sun, and its temperature is cooler.
Provenance
Underlying measurements and references
Evidence Summary
Rows
3
Stellar refs
3
System refs
1
Distancestable
Parallaxstable
Temperaturedisputed
Massdisputed
Radiusdisputed
Luminositystable
Surface Gravitydisputed
Metallicitystable
Spectral Typestable
| ST TEFF | ST MASS | ST RAD | ST AGE | ST LUM | ST SPECTYPE | SY DIST | Stellar Ref | System Ref |
|---|---|---|---|---|---|---|---|---|
| 3411 | 0.37 | 0.38 | — | -1.75 | — | 62.38 | TICv8 | TICv8 |
| 3578 | 0.37 | 0.38 | — | — | M3 | 62.38 | Zink et al. 2021 | TICv8 |
| 3578 | 0.37 | 0.38 | — | — | — | 62.38 | Christiansen et al. 2022 | TICv8 |