Temperature
5906.9 K
5904.5 to 5982
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Stellar HostProfile
K2-188
Unclassified star • 446.8 pc
Records
9
literature rows
Planets
2
system count
References
10
distinct source labels
TIC: TIC 175236511
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
1.07 Msun
1.06 to 1.11
Radius
1.22 Rsun
1.11 to 1.22
Luminosity
0.21 log(Lsun)
0.18 to 0.21
Distance
446.8 pc
single adopted value
Planets
2
Stable across source rows
Scale Comparison
Radius against the Sun
Current adopted radius: 1.22 R☉ (circles scaled linearly by radius)
Sun
1.0 R☉ baseline
K2-188
1.22 R☉
System Layout
Known planets
2 planets linked to this host
K2-188: A Distant Star With Two Transiting Worlds
K2-188 is a star located 1460 light-years away. It is a single-star system with two planets. The star has a mass of 1.07 solar masses and a radius of 1.22 solar radii, which is larger than the Sun's radius. Its temperature is 5910 K, hotter than the Sun's.
Both planets were 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.
K2-188 b is an Earth-like planet with a radius of 1.35 Earth radii, larger than Earth's radius. It orbits every 1.74 days, the shortest year among the listed planets. K2-188 c is a Neptune-like planet with a radius of 2.83 Earth radii, also larger than Earth's radius. It orbits every 7.81 days, the longest year among the listed planets. Among the listed planets, K2-188 b has the smallest radius and K2-188 c has the largest.
Provenance
Underlying measurements and references
Evidence Summary
Rows
9
Stellar refs
9
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 |
|---|---|---|---|---|---|---|---|---|
| 5906.9 | 1.07 | 1.22 | — | 0.21 | — | 446.8 | TICv8 | TICv8 |
| — | — | 1.19 | — | — | — | 446.8 | Petigura et al. 2018 | TICv8 |
| 5982 | 1.11 | 1.11 | — | — | — | 446.8 | Mayo et al. 2018 | TICv8 |
| 5904.5 | — | 1.18 | — | 0.18 | — | 446.8 | Gaia DR2 | TICv8 |
| — | — | — | — | — | — | 446.8 | Barros et al. 2016 | TICv8 |
| — | — | — | — | — | — | 446.8 | Pope et al. 2016 | TICv8 |
| — | — | 1.18 | — | — | — | 446.8 | Kruse et al. 2019 | TICv8 |
| 5977 | 1.06 | 1.19 | — | — | — | 446.8 | Livingston et al. 2018 | TICv8 |
| 5906.9 | — | 1.22 | — | — | — | 446.8 | ExoFOP | TICv8 |