Temperature
5374.7 K
5337 to 5484
←Back to Stellar Hosts
Stellar HostProfile
K2-187
Unclassified star • 330.9 pc
Records
12
literature rows
Planets
4
system count
References
10
distinct source labels
TIC: TIC 332024125
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
0.93 Msun
0.93 to 0.98
Radius
0.92 Rsun
0.83 to 0.96
Luminosity
-0.20 log(Lsun)
-0.21 to -0.20
Distance
330.9 pc
single adopted value
Planets
4
Stable across source rows
Scale Comparison
Radius against the Sun
Current adopted radius: 0.92 R☉ (circles scaled linearly by radius)
Sun
1.0 R☉ baseline
K2-187
0.92 R☉
System Layout
Known planets
4 planets linked to this host
K2-187 and Its Four Planets
K2-187 is a star located 1080 light-years away, and it hosts four known planets. The star has a mass of 0.93 solar masses, a radius of 0.92 solar radii, and a temperature of 5370 K. Its radius is smaller than the Sun's, and its temperature is cooler than the Sun's.
All four planets were discovered by transit in 2018. The transit method detects a planet when it passes in front of its star from our viewpoint, causing a small dip in observed brightness; repeated dips help establish orbital periods. K2-187 b and K2-187 c are both Earth-like. K2-187 b has an orbital period of 0.774 days and a radius of 1.2 Earth radii. K2-187 c has an orbital period of 2.87 days and a radius of 1.4 Earth radii. Both are larger than Earth.
K2-187 d and K2-187 e are both Super-Earths. K2-187 d has an orbital period of 7.15 days and a radius of 2.4 Earth radii. K2-187 e has an orbital period of 13.6 days and a radius of 1.9 Earth radii. Both are larger than Earth. Among the listed planets, K2-187 b has the shortest year at 0.774 days, while K2-187 e has the longest at 13.6 days. K2-187 b also has the smallest radius at 1.2 Earth radii, and K2-187 d has the largest at 2.4 Earth radii.
Provenance
Underlying measurements and references
Evidence Summary
Rows
12
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 |
|---|---|---|---|---|---|---|---|---|
| — | — | 0.96 | — | — | — | 330.9 | Petigura et al. 2018 | TICv8 |
| 5438 | — | 0.83 | — | — | — | 330.9 | Adams et al. 2021 | TICv8 |
| — | — | 0.92 | — | — | — | 330.9 | Kruse et al. 2019 | TICv8 |
| 5477 | 0.97 | 0.89 | — | — | — | 330.9 | Mayo et al. 2018 | TICv8 |
| — | — | — | — | — | — | 330.9 | Barros et al. 2016 | TICv8 |
| — | — | 0.92 | — | — | — | 330.9 | Kruse et al. 2019 | TICv8 |
| — | — | — | — | — | — | 330.9 | Pope et al. 2016 | TICv8 |
| 5484 | 0.98 | 0.92 | — | — | — | 330.9 | Livingston et al. 2018 | TICv8 |
| 5337 | — | 0.92 | — | -0.21 | — | 330.9 | Gaia DR2 | TICv8 |
| 5374.7 | 0.93 | 0.92 | — | -0.20 | — | 330.9 | TICv8 | TICv8 |
| — | — | 0.92 | — | — | — | 330.9 | Kruse et al. 2019 | TICv8 |
| — | — | 0.96 | — | — | — | 330.9 | Petigura et al. 2018 | TICv8 |