Temperature
5771.6 K
5771.6 to 5784
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Stellar HostProfile
K2-186
Unclassified star • 330.7 pc
Records
4
literature rows
Planets
1
system count
References
5
distinct source labels
TIC: TIC 203228393
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
1.03 Msun
1.02 to 1.03
Radius
1.07 Rsun
0.98 to 1.07
Luminosity
0.06 log(Lsun)
0.05 to 0.06
Distance
330.7 pc
single adopted value
Planets
1
Stable across source rows
Scale Comparison
Radius against the Sun
Current adopted radius: 1.07 R☉ (circles scaled linearly by radius)
Sun
1.0 R☉ baseline
K2-186
1.07 R☉
System Layout
Known planets
1 planets linked to this host
K2-186 b
Transit
◌
Discovery
2018
Period
41.47 days
Radius
3.17 R⊕
Mass
—
Eq. Temp
—
K2-186 b: A Neptune-Like World in a Distant System
K2-186 is a star located 1080 light-years from Earth. It has a mass of 1.03 solar masses, a radius of 1.07 solar radii, and a temperature of 5770 K. Its reported radius estimate is larger than the Sun's. One planet is known to orbit this host.
That planet is K2-186 b, a Neptune-like world discovered by the transit method 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. K2-186 b completes one orbit every 41.5 days. Its radius is 3.17 Earth radii, larger than Earth's. Planet size classes compare radius with Earth's: a Neptune-like planet reaches 4 times Earth's radius.
Provenance
Underlying measurements and references
Evidence Summary
Rows
4
Stellar refs
4
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 |
|---|---|---|---|---|---|---|---|---|
| 5771.6 | 1.03 | 1.07 | — | 0.06 | — | 330.7 | TICv8 | TICv8 |
| — | — | 1.06 | — | — | — | 330.7 | Kruse et al. 2019 | TICv8 |
| 5784 | 1.02 | 0.98 | — | — | — | 330.7 | Mayo et al. 2018 | TICv8 |
| 5778.3 | — | 1.06 | — | 0.05 | — | 330.7 | Gaia DR2 | TICv8 |