Temperature
5117 K
5046.1 to 5360
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Stellar HostProfile
K2-211
Unclassified star • 272.3 pc
Records
7
literature rows
Planets
1
system count
References
7
distinct source labels
TIC: TIC 399731211
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
0.85 Msun
0.85 to 0.88
Radius
0.82 Rsun
0.79 to 0.84
Age
6.50 Gyr
single adopted value
Luminosity
-0.38 log(Lsun)
-0.39 to -0.37
Distance
272.3 pc
single adopted value
Planets
1
Stable across source rows
Scale Comparison
Radius against the Sun
Current adopted radius: 0.82 R☉ (circles scaled linearly by radius)
Sun
1.0 R☉ baseline
K2-211
0.82 R☉
System Layout
Known planets
1 planets linked to this host
K2-211 b
Transit
◌
Discovery
2018
Period
0.67 days
Radius
1.33 R⊕
Mass
—
Eq. Temp
1873 K
K2-211 b: A Close-Orbiting Earth-Like Planet
K2-211 is a star 888 light-years from Earth with one known planet in orbit around it. The star is estimated to be 6.5 billion years old, with a mass of 0.851 solar masses and a radius of 0.818 solar radii. Its temperature is 5120 K. Each of these estimates is smaller or cooler than the corresponding value for the Sun.
The planet, K2-211 b, was discovered in 2018 by the transit method, in which a planet passing in front of its star causes a small dip in observed brightness. Repeated dips help establish orbital periods. K2-211 b completes one orbit in 0.67 days. Its radius is 1.33 Earth radii, which is larger than Earth's. That radius places it in the Earth-like size class, defined as within 1.5 times Earth's radius.
Provenance
Underlying measurements and references
Evidence Summary
Rows
7
Stellar refs
6
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 |
|---|---|---|---|---|---|---|---|---|
| 5187.9 | 0.88 | 0.80 | — | -0.37 | — | 272.3 | TICv8 | TICv8 |
| 5046.1 | — | 0.84 | — | -0.39 | — | 272.3 | Gaia DR2 | TICv8 |
| 5221 | 0.88 | 0.82 | — | — | — | 272.3 | Mayo et al. 2018 | TICv8 |
| — | — | 0.84 | — | — | — | 272.3 | Kruse et al. 2019 | TICv8 |
| 5360 | — | 0.79 | — | — | — | 272.3 | Adams et al. 2021 | TICv8 |
| — | — | 0.84 | — | — | — | 272.3 | Kruse et al. 2019 | TICv8 |
| 5117 | 0.85 | 0.82 | 6.50 | -0.38 | — | 272.3 | Thygesen et al. 2023 | TICv8 |