Temperature
4784 K
4444 to 4784
←Back to Stellar Hosts
Stellar HostProfile
K2-81
Unclassified star • 252.3 pc
Records
6
literature rows
Planets
1
system count
References
7
distinct source labels
TIC: TIC 59040029
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
0.77 Msun
0.70 to 0.77
Radius
0.76 Rsun
0.63 to 0.76
Luminosity
-0.57 log(Lsun)
-0.76 to -0.57
Distance
252.3 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
K2-81
0.76 R☉
System Layout
Known planets
1 planets linked to this host
K2-81 b
Transit
◌
Discovery
2016
Period
6.10 days
Radius
1.97 R⊕
Mass
—
Eq. Temp
—
K2-81 and Its Super-Earth
K2-81 is a star 823 light-years away with 0.772 solar masses, 0.756 solar radii, and a temperature of 4780 K. Its reported mass and radius estimates are smaller than the Sun's, and its reported temperature is cooler than the Sun's. One planet orbits this host.
K2-81 b is a Super-Earth discovered by transit in 2016. It completes an orbit every 6.1 days and has a radius of 1.97 Earth radii, larger than Earth's.
Provenance
Underlying measurements and references
Evidence Summary
Rows
6
Stellar refs
6
System refs
1
Distancestable
Parallaxstable
Temperaturedisputed
Massdisputed
Radiusdisputed
Luminositydisputed
Surface Gravitydisputed
| ST TEFF | ST MASS | ST RAD | ST AGE | ST LUM | ST SPECTYPE | SY DIST | Stellar Ref | System Ref |
|---|---|---|---|---|---|---|---|---|
| 4674.1 | 0.75 | 0.63 | — | — | — | 252.3 | Dressing et al. 2017 | TICv8 |
| — | — | 0.70 | — | — | — | 252.3 | Kruse et al. 2019 | TICv8 |
| — | — | — | — | — | — | 252.3 | Barros et al. 2016 | TICv8 |
| 4784 | 0.77 | 0.76 | — | -0.57 | — | 252.3 | TICv8 | TICv8 |
| 4444 | — | 0.70 | — | -0.76 | — | 252.3 | Gaia DR2 | TICv8 |
| 4530 | 0.70 | 0.63 | — | — | — | 252.3 | Crossfield et al. 2016 | TICv8 |