Temperature
4629 K
4409 to 4667
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Stellar HostProfile
K2-254
Unclassified star • 227.8 pc
Records
3
literature rows
Planets
2
system count
References
4
distinct source labels
TIC: TIC 147683165
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: Livingston et al. 2018 • System source: TICv8
Mass
0.71 Msun
0.69 to 0.71
Radius
0.67 Rsun
0.59 to 0.71
Distance
227.8 pc
single adopted value
Planets
2
Stable across source rows
Scale Comparison
Radius against the Sun
Current adopted radius: 0.67 R☉ (circles scaled linearly by radius)
Sun
1.0 R☉ baseline
K2-254
0.67 R☉
System Layout
Known planets
2 planets linked to this host
K2-254 and Its Two Super-Earths
K2-254 is a star 743 light-years away with two known planets, both classified as Super-Earths. This means their radii reach up to 2.5 times Earth's radius. The star itself has a reported mass estimate of 0.71 solar masses, a reported radius estimate of 0.67 solar radii, and a temperature of 4630 K. All three of these stellar values are smaller or cooler than the Sun's corresponding values.
Both planets were discovered in 2018 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. K2-254 b completes an orbit in 4.1 days and has a radius of 1.63 Earth radii, larger than Earth's. K2-254 c orbits in 12.1 days with a radius of 2.19 Earth radii, also larger than Earth's. Among the listed planets, K2-254 b has the shortest orbital period and the smallest radius, while K2-254 c has the longest orbital period and the largest radius.
Provenance
Underlying measurements and references
Evidence Summary
Rows
3
Stellar refs
3
System refs
1
Distancestable
Parallaxstable
Temperaturedisputed
Massdisputed
Radiusdisputed
Luminositydisputed
Surface Gravitydisputed
Metallicitystable