Temperature
5474 K
5384.5 to 5599
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Stellar HostProfile
K2-108
Unclassified star • 477.3 pc
Records
11
literature rows
Planets
1
system count
References
12
distinct source labels
TIC: TIC 27635334
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: Petigura et al. 2017 • System source: TICv8
Mass
1.12 Msun
0.96 to 2.83
Radius
1.75 Rsun
1.75 to 2.31
Age
7.80 Gyr
single adopted value
Distance
477.3 pc
single adopted value
Planets
1
Stable across source rows
Scale Comparison
Radius against the Sun
Current adopted radius: 1.75 R☉ (circles scaled linearly by radius)
Sun
1.0 R☉ baseline
K2-108
1.75 R☉
System Layout
Known planets
1 planets linked to this host
K2-108 b
Transit
◌
Discovery
2017
Period
4.73 days
Radius
5.33 R⊕
Mass
—
Eq. Temp
1360 K
K2-108 b: A Jupiter-Like World in a Distant System
K2-108 is a star located 1560 light-years away, and it hosts one known planet. The star is estimated to be 7.8 billion years old, with a mass of 1.12 solar masses and a radius of 1.75 solar radii. Its temperature is 5470 K, and its reported mass and radius estimates are both larger than the Sun's, while its reported temperature is cooler than the Sun's.
The planet K2-108 b was discovered in 2017 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. It is classified as Jupiter-like, a size class for planets exceeding 4 times Earth's radius. K2-108 b has an orbital period of 4.73 days, the time it takes to complete one orbit, and a radius of 5.33 Earth radii. Its reported radius estimate is larger than Earth's.
Provenance
Underlying measurements and references
Evidence Summary
Rows
11
Stellar refs
11
System refs
1
Distancestable
Parallaxstable
Temperaturedisputed
Massdisputed
Radiusdisputed
Agestable
Luminositydisputed
Surface Gravitydisputed
Metallicitydisputed
| ST TEFF | ST MASS | ST RAD | ST AGE | ST LUM | ST SPECTYPE | SY DIST | Stellar Ref | System Ref |
|---|---|---|---|---|---|---|---|---|
| 5414 | 1.29 | 2.31 | — | — | — | 477.3 | Mayo et al. 2018 | TICv8 |
| — | — | 1.80 | — | — | — | 477.3 | Kruse et al. 2019 | TICv8 |
| — | — | — | — | — | — | 477.3 | Pope et al. 2016 | TICv8 |
| 5474 | 1.12 | 1.75 | 7.80 | — | — | 477.3 | Petigura et al. 2017 | TICv8 |
| 5474 | 2.83 | 1.75 | — | — | — | 477.3 | Howard et al. 2025 | TICv8 |
| 5496 | — | 1.76 | — | — | — | 477.3 | ExoFOP | TICv8 |
| 5496 | 0.96 | 1.76 | — | 0.41 | — | 477.3 | TICv8 | TICv8 |
| 5599 | 1.17 | 1.76 | — | — | — | 477.3 | Livingston et al. 2018 | TICv8 |
| — | — | 1.77 | — | — | — | 477.3 | Petigura et al. 2018 | TICv8 |
| — | — | — | — | — | — | 477.3 | Barros et al. 2016 | TICv8 |
| 5384.5 | — | 1.80 | — | 0.39 | — | 477.3 | Gaia DR2 | TICv8 |