Temperature
3810 K
3810 to 4010.3
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Stellar HostProfile
K2-240
M0.5 V • 72.91 pc
Records
3
literature rows
Planets
2
system count
References
4
distinct source labels
TIC: TIC 432247315
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: Díez Alonso et al. 2018 • System source: TICv8
Mass
0.58 Msun
0.56 to 0.58
Radius
0.54 Rsun
0.50 to 0.57
Luminosity
-1.28 log(Lsun)
-1.28 to -1.21
Distance
72.91 pc
single adopted value
Spectral Type
M0.5 V
Consistent across records
Planets
2
Stable across source rows
Scale Comparison
Radius against the Sun
Current adopted radius: 0.54 R☉ (circles scaled linearly by radius)
Sun
1.0 R☉ baseline
K2-240
0.54 R☉
System Layout
Known planets
2 planets linked to this host
K2-240 and Its Two Super-Earths
K2-240 is an M0.5 V star, a small, cool red dwarf, located 238 light-years away. Its reported mass is 0.58 solar masses, its radius is 0.54 solar radii, and its temperature is 3810 K, all smaller or cooler than the Sun's corresponding values. Two planets are known to orbit this host.
Both planets are Super-Earths discovered by transit in 2018. K2-240 b has an orbital period of 6.03 days and a radius of 2 Earth radii, larger than Earth's. K2-240 c has an orbital period of 20.5 days and a radius of 1.8 Earth radii, also larger than Earth's. Among the listed planets, K2-240 b has the shortest year and the largest radius, while K2-240 c has the longest year and the smallest radius. Neither planet has a reported mass.
Provenance
Underlying measurements and references
Evidence Summary
Rows
3
Stellar refs
3
System refs
1
Distancestable
Parallaxstable
Temperaturedisputed
Massdisputed
Radiusdisputed
Luminositydisputed
Surface Gravitydisputed
Metallicitystable
Spectral Typestable