Temperature
5413 K
4740 to 5512
←Back to Stellar Hosts
Stellar HostProfile
K2-37
G3 V • 179.9 pc
Records
10
literature rows
Planets
3
system count
References
10
distinct source labels
TIC: TIC 68504570
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: Sinukoff et al. 2016 • System source: TICv8
Mass
0.90 Msun
0.81 to 0.90
Radius
0.85 Rsun
0.72 to 0.87
Distance
179.9 pc
single adopted value
Spectral Type
G3 V
Consistent across records
Planets
3
Stable across source rows
Scale Comparison
Radius against the Sun
Current adopted radius: 0.85 R☉ (circles scaled linearly by radius)
Sun
1.0 R☉ baseline
K2-37
0.85 R☉
System Layout
Known planets
3 planets linked to this host
K2-37: A Sun-Like Star and Its Three Planets
K2-37 is a G3 V star located 587 light-years away. Its spectral type marks it as a main-sequence dwarf of the same broad temperature class as the Sun. The star's reported mass estimate is 0.9 solar masses, its radius estimate is 0.85 solar radii, and its temperature is 5410 K, all three lower than the corresponding solar values. Three planets are known to orbit this host.
All three were discovered by the transit method, in which a planet crosses in front of its star and produces a small dip in observed brightness, and all three were reported in 2016. K2-37 b is an Earth-like planet with a radius of 1.39 Earth radii and an orbital period of 4.44 days. K2-37 c is a Super-Earth with a radius of 2.41 Earth radii and an orbital period of 6.43 days. K2-37 d is also a Super-Earth, with a mass of 12.5 Earth masses, a radius of 2.31 Earth radii, and an orbital period of 14.1 days. The size classes describe radius rather than composition: an Earth-like planet remains within 1.5 times Earth's radius, while a Super-Earth reaches up to 2.5 times that radius.
Among the listed planets, K2-37 b has the shortest period and the smallest radius, while K2-37 c has the largest radius and the second-shortest period. K2-37 d has the longest period and the second-smallest radius. Its mean density is 5.59 g/cm³, 1.01 times Earth's.
Provenance
Underlying measurements and references
Evidence Summary
Rows
10
Stellar refs
9
System refs
1
Distancestable
Parallaxstable
Temperaturedisputed
Massdisputed
Radiusdisputed
Luminositydisputed
Surface Gravitydisputed
Metallicitydisputed
Spectral Typestable
| ST TEFF | ST MASS | ST RAD | ST AGE | ST LUM | ST SPECTYPE | SY DIST | Stellar Ref | System Ref |
|---|---|---|---|---|---|---|---|---|
| 4927 | 0.81 | 0.86 | — | -0.41 | — | 179.9 | TICv8 | TICv8 |
| 5382 | 0.89 | 0.82 | — | — | — | 179.9 | Mayo et al. 2018 | TICv8 |
| — | — | — | — | — | — | 179.9 | Barros et al. 2016 | TICv8 |
| — | — | 0.79 | — | — | — | 179.9 | Kruse et al. 2019 | TICv8 |
| 5413 | 0.90 | 0.85 | — | — | G3 V | 179.9 | Sinukoff et al. 2016 | TICv8 |
| 5512 | 0.90 | 0.87 | — | — | — | 179.9 | Crossfield et al. 2016 | TICv8 |
| 5352 | 0.84 | 0.81 | — | — | — | 179.9 | Howard et al. 2025 | TICv8 |
| 4953 | — | 0.79 | — | -0.47 | — | 179.9 | Gaia DR2 | TICv8 |
| — | — | 0.79 | — | — | — | 179.9 | Kruse et al. 2019 | TICv8 |
| 4740 | — | 0.72 | — | — | — | 179.9 | Vanderburg et al. 2016 | TICv8 |