Temperature
5352 K
5135.0 to 5612
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Stellar HostProfile
Kepler-668
Unclassified star • 784.6 pc
Records
13
literature rows
Planets
1
system count
References
14
distinct source labels
TIC: TIC 350813835
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: Morton et al. 2016 • System source: TICv8
Mass
0.87 Msun
0.86 to 0.93
Radius
0.82 Rsun
0.72 to 0.82
Age
3.89 Gyr
0.50 to 3.89
Distance
784.6 pc
single adopted value
Planets
1
Stable across source rows
Scale Comparison
Radius against the Sun
Current adopted radius: 0.82 R☉ (circles scaled linearly by radius)
Sun
1.0 R☉ baseline
Kepler-668
0.82 R☉
System Layout
Known planets
1 planets linked to this host
Kepler-668 b
Transit
◌
Discovery
2016
Period
8.35 days
Radius
2.70 R⊕
Mass
—
Eq. Temp
—
Kepler-668 and Its Neptune-Like Planet
Kepler-668 is a star 2560 light-years away with one planet. The star is estimated to be 3.89 billion years old, with a mass of 0.87 solar masses and a radius of 0.82 solar radii. Its temperature is 5350 K, cooler than the Sun's, and its reported mass and radius estimates are both smaller than the Sun's.
The planet Kepler-668 b was discovered in 2016 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. Kepler-668 b completes an orbit in 8.35 days. Its radius is 2.7 Earth radii, larger than Earth's, and it is classified as Neptune-like, a size class reaching 4 times Earth's radius.
Provenance
Underlying measurements and references
Evidence Summary
Rows
13
Stellar refs
13
System refs
1
Distancestable
Parallaxstable
Temperaturedisputed
Massdisputed
Radiusdisputed
Agedisputed
Luminositydisputed
Surface Gravitydisputed
Metallicitydisputed
| ST TEFF | ST MASS | ST RAD | ST AGE | ST LUM | ST SPECTYPE | SY DIST | Stellar Ref | System Ref |
|---|---|---|---|---|---|---|---|---|
| 5262 | 0.90 | 0.76 | — | -0.40 | — | 784.6 | TICv8 | TICv8 |
| 5612 | 0.93 | 0.82 | 0.50 | — | — | 784.6 | Q1-Q8 KOI Table | TICv8 |
| 5592 | 0.86 | 0.78 | — | — | — | 784.6 | Q1-Q12 KOI Table | TICv8 |
| 5345 | — | 0.72 | — | — | — | 784.6 | Latham et al. 2005 | TICv8 |
| 5592 | 0.86 | 0.78 | — | — | — | 784.6 | Q1-Q16 KOI Table | TICv8 |
| 5345 | — | 0.72 | — | — | — | 784.6 | Batalha et al. 2013 | TICv8 |
| 5592 | 0.86 | 0.78 | — | — | — | 784.6 | Q1-Q17 DR24 KOI Table | TICv8 |
| 5135.0 | — | 0.79 | — | -0.40 | — | 784.6 | Gaia DR2 | TICv8 |
| 5592 | 0.86 | 0.79 | — | — | — | 784.6 | Q1-Q17 DR25 KOI Table | TICv8 |
| 5345 | — | 0.72 | — | — | — | 784.6 | Q1-Q6 KOI Table | TICv8 |
| — | — | — | — | — | — | 784.6 | Q1-Q17 DR25 Supplemental KOI Table | TICv8 |
| 5352 | 0.87 | 0.82 | 3.89 | — | — | 784.6 | Morton et al. 2016 | TICv8 |
| 5593 | — | 0.72 | — | — | — | 784.6 | Berger et al. 2018 | TICv8 |