Temperature
5021 K
4923.3 to 5129
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Stellar HostProfile
Kepler-681
Unclassified star • 686.9 pc
Records
13
literature rows
Planets
1
system count
References
14
distinct source labels
TIC: TIC 299217986
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
0.80 Msun
0.78 to 0.85
Radius
0.76 Rsun
0.70 to 0.81
Age
5.01 Gyr
4 to 5.01
Distance
686.9 pc
single adopted value
Planets
1
Stable across source rows
Scale Comparison
Radius against the Sun
Current adopted radius: 0.76 R☉ (circles scaled linearly by radius)
Sun
1.0 R☉ baseline
Kepler-681
0.76 R☉
System Layout
Known planets
1 planets linked to this host
Kepler-681 b
Transit
◌
Discovery
2016
Period
26.39 days
Radius
3.08 R⊕
Mass
—
Eq. Temp
—
Kepler-681 and Its Neptune-Like Planet
Kepler-681 is a star located 2240 light-years away. It has one known planet. The host star is estimated to be 5.01 billion years old, with a mass of 0.8 solar masses and a radius of 0.76 solar radii. Its temperature is 5020 K, cooler than the Sun's, and both its reported mass and radius estimates are smaller than the Sun's.
The only planet known to orbit this star is Kepler-681 b, discovered by transit in 2016, when the planet passed in front of its star from our viewpoint and caused a small dip in observed brightness. Kepler-681 b is Neptune-like, a size class that reaches 4 times Earth's radius, and its radius of 3.08 Earth radii is larger than Earth's. It completes one orbit every 26.4 days.
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 |
|---|---|---|---|---|---|---|---|---|
| 4937 | 0.81 | 0.81 | — | -0.46 | — | 686.9 | TICv8 | TICv8 |
| 5125 | — | 0.78 | — | — | — | 686.9 | Berger et al. 2018 | TICv8 |
| 5127 | 0.84 | 0.78 | — | — | — | 686.9 | Q1-Q12 KOI Table | TICv8 |
| 5129 | 0.85 | 0.76 | — | — | — | 686.9 | Q1-Q17 DR25 KOI Table | TICv8 |
| 4923.3 | — | 0.79 | — | -0.48 | — | 686.9 | Gaia DR2 | TICv8 |
| 5127 | 0.84 | 0.78 | — | — | — | 686.9 | Q1-Q16 KOI Table | TICv8 |
| 5021 | 0.80 | 0.76 | 5.01 | — | — | 686.9 | Morton et al. 2016 | TICv8 |
| 4950 | — | 0.73 | — | — | — | 686.9 | Q1-Q6 KOI Table | TICv8 |
| 4950 | — | 0.73 | — | — | — | 686.9 | Batalha et al. 2013 | TICv8 |
| 5070 | 0.78 | 0.70 | 4 | — | — | 686.9 | Q1-Q8 KOI Table | TICv8 |
| 4950 | — | 0.75 | — | — | — | 686.9 | Latham et al. 2005 | TICv8 |
| — | — | — | — | — | — | 686.9 | Q1-Q17 DR25 Supplemental KOI Table | TICv8 |
| 5127 | 0.84 | 0.78 | — | — | — | 686.9 | Q1-Q17 DR24 KOI Table | TICv8 |