Temperature
5864.8 K
5864.8 to 6570
←Back to Stellar Hosts
Stellar HostProfile
K2-243
Unclassified star • 266.9 pc
Records
4
literature rows
Planets
2
system count
References
5
distinct source labels
TIC: TIC 96199085
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: TICv8 • System source: TICv8
Mass
1.06 Msun
1.06 to 1.29
Radius
1.62 Rsun
1.22 to 1.62
Luminosity
0.45 log(Lsun)
0.43 to 0.45
Distance
266.9 pc
single adopted value
Planets
2
Stable across source rows
Scale Comparison
Radius against the Sun
Current adopted radius: 1.62 R☉ (circles scaled linearly by radius)
Sun
1.0 R☉ baseline
K2-243
1.62 R☉
System Layout
Known planets
2 planets linked to this host
K2-243: A Two-Planet System in a Super-Earth Pair
K2-243 is a star 870 light-years away with two planets, both discovered by transit in 2018. The host star has a mass of 1.06 solar masses, a radius of 1.62 solar radii, and a temperature of 5860 K. Its reported radius estimate is larger than the Sun's.
Both planets are classified as Super-Earths, a size class that compares radius with Earth's and reaches up to 2.5 times Earth's radius. K2-243 b has an orbital period of 11.5 days and a radius of 2.17 Earth radii, making it the largest of the two by reported estimates and the one with the shortest orbital period among the listed planets. K2-243 c has an orbital period of 24.9 days and a radius of 2.01 Earth radii, giving it the smallest radius among the listed planets and the longest orbital period by reported estimates. Both planets' reported radius estimates are larger than Earth's.
Provenance
Underlying measurements and references
Evidence Summary
Rows
4
Stellar refs
4
System refs
1
Distancestable
Parallaxstable
Temperaturedisputed
Massdisputed
Radiusdisputed
Luminositydisputed
Surface Gravitydisputed
Metallicitydisputed
| ST TEFF | ST MASS | ST RAD | ST AGE | ST LUM | ST SPECTYPE | SY DIST | Stellar Ref | System Ref |
|---|---|---|---|---|---|---|---|---|
| 5864.8 | 1.06 | 1.62 | — | 0.45 | — | 266.9 | TICv8 | TICv8 |
| 6213 | — | 1.22 | — | — | — | 266.9 | Mayo et al. 2018 | TICv8 |
| 6570 | 1.29 | 1.39 | — | — | — | 266.9 | Livingston et al. 2018 | TICv8 |
| 6194.5 | — | 1.42 | — | 0.43 | — | 266.9 | Gaia DR2 | TICv8 |