Temperature
4035.8 K
4035.8 to 4382
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Stellar HostProfile
K2-17
Unclassified star โข 125.1 pc
Records
9
literature rows
Planets
1
system count
References
10
distinct source labels
TIC: TIC 291090078
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 โข System source: TICv8
Mass
0.63 Msun
0.53 to 0.71
Radius
0.72 Rsun
0.48 to 0.72
Luminosity
-0.91 log(Lsun)
-1.00 to -0.91
Distance
125.1 pc
single adopted value
Planets
1
Stable across source rows
Scale Comparison
Radius against the Sun
Current adopted radius: 0.72 Rโ (circles scaled linearly by radius)
Sun
1.0 Rโ baseline
K2-17
0.72 Rโ
System Layout
Known planets
1 planets linked to this host
K2-17 b
Transit
โ
Discovery
2015
Period
17.97 days
Radius
2.23 Rโ
Mass
โ
Eq. Temp
487 K
K2-17: A Cool Dwarf and Its Super-Earth
K2-17 is a K7 star located 408 light-years away. Its reported mass is 0.631 solar masses and its reported radius is 0.717 solar radii, both smaller than the Sun's. With a temperature of 4040 K, it is also cooler than the Sun. One planet orbits this host.
That planet is K2-17 b, classified as a Super-Earth and discovered by transit in 2015. Its reported radius is 2.23 Earth radii, larger than Earth's. It completes one orbit every 18 days.
Provenance
Underlying measurements and references
Evidence Summary
Rows
9
Stellar refs
9
System refs
1
Distancestable
Parallaxstable
Temperaturedisputed
Massdisputed
Radiusdisputed
Luminositydisputed
Surface Gravitydisputed
Metallicitydisputed
Spectral Typestable
| ST TEFF | ST MASS | ST RAD | ST AGE | ST LUM | ST SPECTYPE | SY DIST | Stellar Ref | System Ref |
|---|---|---|---|---|---|---|---|---|
| 4382 | 0.62 | 0.60 | โ | โ | โ | 125.1 | Mayo et al. 2018 | TICv8 |
| 4360 | โ | 0.56 | โ | -1.00 | โ | 125.1 | Gaia DR2 | TICv8 |
| 4151 | โ | 0.63 | โ | โ | โ | 125.1 | Vanderburg et al. 2016 | TICv8 |
| 4118.4 | 0.66 | 0.63 | โ | โ | โ | 125.1 | Dressing et al. 2017 | TICv8 |
| โ | โ | โ | โ | โ | K7 | 125.1 | Luo et al. 2018 | TICv8 |
| 4035.8 | 0.63 | 0.72 | โ | -0.91 | โ | 125.1 | TICv8 | TICv8 |
| โ | โ | 0.56 | โ | โ | โ | 125.1 | Kruse et al. 2019 | TICv8 |
| 4102 | 0.53 | 0.48 | โ | โ | โ | 125.1 | Crossfield et al. 2016 | TICv8 |
| 4320 | 0.71 | 0.66 | โ | โ | โ | 125.1 | Montet et al. 2015 | TICv8 |