Temperature
5865 K
5774.8 to 6490
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Stellar HostProfile
K2-66
Unclassified star • 513.9 pc
Records
6
literature rows
Planets
1
system count
References
7
distinct source labels
TIC: TIC 50183101
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: Howard et al. 2025 • System source: TICv8
Mass
1.06 Msun
1.06 to 1.16
Radius
1.79 Rsun
1.59 to 1.79
Distance
513.9 pc
single adopted value
Planets
1
Stable across source rows
Scale Comparison
Radius against the Sun
Current adopted radius: 1.79 R☉ (circles scaled linearly by radius)
Sun
1.0 R☉ baseline
K2-66
1.79 R☉
System Layout
Known planets
1 planets linked to this host
K2-66 b
Transit
◌
Discovery
2016
Period
5.07 days
Radius
2.49 R⊕
Mass
21.30 M⊕
Eq. Temp
1372 K
K2-66: A Distant Star With One Super-Earth
K2-66 is a star 1680 light-years away with one known planet. The host star has a mass of 1.06 solar masses and a radius of 1.79 solar radii, larger than the Sun's. Its temperature is 5870 K.
The planet K2-66 b is classified as a Super-Earth, a size class that reaches 2.5 times Earth's radius. It was found by the transit method, in which a planet passes in front of its star from our viewpoint and causes a small dip in observed brightness; repeated dips help establish orbital periods. K2-66 b was discovered in 2016. Its radius is 2.49 Earth radii, larger than Earth's, and its mass is 21.3 Earth masses, larger than Earth's. Its mean density is 7.6 g/cm³, 1.38 times Earth's. The planet completes an orbit every 5.07 days.
Provenance
Underlying measurements and references
Evidence Summary
Rows
6
Stellar refs
6
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 |
|---|---|---|---|---|---|---|---|---|
| 6490 | — | 1.59 | — | — | — | 513.9 | Vanderburg et al. 2016 | TICv8 |
| 5961 | 1.09 | 1.73 | — | 0.53 | — | 513.9 | TICv8 | TICv8 |
| 5774.8 | — | 1.79 | — | 0.51 | — | 513.9 | Gaia DR2 | TICv8 |
| 5865 | 1.06 | 1.79 | — | — | — | 513.9 | Howard et al. 2025 | TICv8 |
| 5958 | 1.16 | 1.71 | — | — | — | 513.9 | Crossfield et al. 2016 | TICv8 |
| 5887 | 1.11 | 1.67 | — | — | — | 513.9 | Sinukoff et al. 2017 | TICv8 |