Temperature
4558 K
4504 to 4558
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Stellar HostProfile
K2-338
Unclassified star • 157.0 pc
Records
4
literature rows
Planets
1
system count
References
5
distinct source labels
TIC: TIC 186814470
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: de Leon et al. 2021 • System source: TICv8
Mass
0.66 Msun
0.66 to 0.71
Radius
0.63 Rsun
0.51 to 0.63
Distance
157.0 pc
single adopted value
Planets
1
Stable across source rows
Scale Comparison
Radius against the Sun
Current adopted radius: 0.63 R☉ (circles scaled linearly by radius)
Sun
1.0 R☉ baseline
K2-338
0.63 R☉
System Layout
Known planets
1 planets linked to this host
K2-338 b
Transit
◌
Discovery
2021
Period
3.85 days
Radius
1.03 R⊕
Mass
—
Eq. Temp
783 K
K2-338 b: An Earth-Sized World Around a Small Cool Star
K2-338 is a single star located 512 light-years away, and it hosts one known planet. The star is smaller and cooler than the Sun, with 0.66 solar masses, 0.63 solar radii, and a temperature of 4560 K.
The planet, K2-338 b, was discovered in 2021 by the transit method, in which a planet passing in front of its star causes a small dip in observed brightness. K2-338 b is classified as Earth-like, with a radius of 1.03 Earth radii, placing it within 1.5 times Earth's radius. It completes an orbit every 3.85 days.
Provenance
Underlying measurements and references
Evidence Summary
Rows
4
Stellar refs
4
System refs
1
Distancestable
Parallaxstable
Temperaturedisputed
Massdisputed
Radiusdisputed
Luminositystable
Surface Gravitydisputed
Metallicitystable
| ST TEFF | ST MASS | ST RAD | ST AGE | ST LUM | ST SPECTYPE | SY DIST | Stellar Ref | System Ref |
|---|---|---|---|---|---|---|---|---|
| 4504 | 0.71 | 0.63 | — | -0.84 | — | 157.0 | TICv8 | TICv8 |
| — | — | — | — | — | — | 157.0 | Pope et al. 2016 | TICv8 |
| 4558 | 0.66 | 0.63 | — | — | — | 157.0 | de Leon et al. 2021 | TICv8 |
| — | — | 0.51 | — | — | — | 157.0 | Kruse et al. 2019 | TICv8 |