Temperature
3978 K
3929 to 4125.3
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Stellar HostProfile
K2-154
M0.0 V • 129.4 pc
Records
4
literature rows
Planets
2
system count
References
5
distinct source labels
TIC: TIC 175371068
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: Hirano et al. 2018 • System source: TICv8
Mass
0.67 Msun
0.63 to 0.67
Radius
0.65 Rsun
0.59 to 0.65
Luminosity
-1.02 log(Lsun)
-1.05 to -1.02
Distance
129.4 pc
single adopted value
Spectral Type
M0.0 V
Consistent across records
Planets
2
Stable across source rows
Scale Comparison
Radius against the Sun
Current adopted radius: 0.65 R☉ (circles scaled linearly by radius)
Sun
1.0 R☉ baseline
K2-154
0.65 R☉
System Layout
Known planets
2 planets linked to this host
K2-154: A Nearby M-Dwarf with Two Super-Earths
K2-154 is a small, cool red dwarf of spectral type M0.0 V, located 422 light-years away. Its reported mass estimate is 0.672 solar masses, its reported radius estimate is 0.649 solar radii, and its reported temperature is 3980 K, all smaller or cooler than the corresponding values for the Sun. Two planets are known to orbit this star.
Both planets are classed as Super-Earths, meaning their radii fall within 2.5 times Earth's radius, and both were discovered by the transit method, in which a planet passes in front of its star from our viewpoint and causes a small dip in observed brightness. K2-154 b orbits every 3.68 days and has a reported radius estimate of 1.99 Earth radii. K2-154 c orbits every 7.95 days and has a reported radius estimate of 2.07 Earth radii.
The radii of both planets are larger than Earth's. Among the listed planets, K2-154 b has the shortest year by reported estimates, at 3.68 days, while K2-154 c has the longest, at 7.95 days. K2-154 b also has the smallest radius among the listed planets by reported estimates, while K2-154 c has the largest.
Provenance
Underlying measurements and references
Evidence Summary
Rows
4
Stellar refs
4
System refs
1
Distancestable
Parallaxstable
Temperaturedisputed
Massdisputed
Radiusdisputed
Luminositydisputed
Surface Gravitydisputed
Metallicitydisputed
Spectral Typestable
| ST TEFF | ST MASS | ST RAD | ST AGE | ST LUM | ST SPECTYPE | SY DIST | Stellar Ref | System Ref |
|---|---|---|---|---|---|---|---|---|
| 4125.3 | — | 0.59 | — | -1.04 | — | 129.4 | Gaia DR2 | TICv8 |
| 3929 | 0.63 | 0.65 | — | -1.05 | — | 129.4 | TICv8 | TICv8 |
| 3978 | 0.67 | 0.65 | — | -1.02 | M0.0 V | 129.4 | Hirano et al. 2018 | TICv8 |
| 4097 | 0.65 | 0.63 | — | — | — | 129.4 | Livingston et al. 2018 | TICv8 |