Temperature
5288 K
5098 to 5424
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Stellar HostProfile
K2-226
Unclassified star • 211.3 pc
Records
5
literature rows
Planets
1
system count
References
6
distinct source labels
TIC: TIC 176938958
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: Thygesen et al. 2023 • System source: TICv8
Mass
0.86 Msun
0.86 to 0.90
Radius
0.89 Rsun
0.82 to 0.93
Age
9.60 Gyr
single adopted value
Luminosity
-0.25 log(Lsun)
-0.28 to -0.25
Distance
211.3 pc
single adopted value
Planets
1
Stable across source rows
Scale Comparison
Radius against the Sun
Current adopted radius: 0.89 R☉ (circles scaled linearly by radius)
Sun
1.0 R☉ baseline
K2-226
0.89 R☉
System Layout
Known planets
1 planets linked to this host
K2-226 b
Transit
◌
Discovery
2018
Period
3.27 days
Radius
1.54 R⊕
Mass
—
Eq. Temp
1187 K
K2-226 and Its Super-Earth
K2-226 is a star 689 light-years away whose reported mass estimate is 0.856 solar masses, making it smaller than the Sun, and whose reported radius estimate is 0.889 solar radii, also smaller than the Sun. It is 9.6 billion years old and has a reported temperature of 5290 K, cooler than the Sun. One planet is known to orbit this host.
That planet is K2-226 b, a Super-Earth discovered by transit in 2018. A transit occurs when a planet passes in front of its star from our viewpoint, causing a small dip in observed brightness; repeated dips help establish orbital periods. K2-226 b orbits every 3.27 days and has a radius of 1.54 Earth radii, larger than Earth's. A Super-Earth reaches 2.5 times Earth's radius, so the size class describes radius rather than composition.
Provenance
Underlying measurements and references
Evidence Summary
Rows
5
Stellar refs
5
System refs
1
Distancestable
Parallaxstable
Temperaturedisputed
Massdisputed
Radiusdisputed
Agestable
Luminositydisputed
Surface Gravitydisputed
Metallicitydisputed
| ST TEFF | ST MASS | ST RAD | ST AGE | ST LUM | ST SPECTYPE | SY DIST | Stellar Ref | System Ref |
|---|---|---|---|---|---|---|---|---|
| 5288 | 0.86 | 0.89 | 9.60 | -0.25 | — | 211.3 | Thygesen et al. 2023 | TICv8 |
| 5397 | 0.89 | 0.82 | — | — | — | 211.3 | Mayo et al. 2018 | TICv8 |
| 5424 | 0.88 | 0.91 | — | — | — | 211.3 | Livingston et al. 2018 | TICv8 |
| 5268 | 0.90 | 0.90 | — | -0.25 | — | 211.3 | TICv8 | TICv8 |
| 5098 | — | 0.93 | — | -0.28 | — | 211.3 | Gaia DR2 | TICv8 |