Temperature
5434 K
5302.6 to 5636
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Stellar HostProfile
K2-105
Unclassified star • 198.0 pc
Records
14
literature rows
Planets
1
system count
References
15
distinct source labels
TIC: TIC 6892385
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: Narita et al. 2017 • System source: TICv8
Mass
1.01 Msun
0.94 to 1.05
Radius
0.95 Rsun
0.91 to 0.98
Age
0.60 Gyr
single adopted value
Distance
198.0 pc
single adopted value
Planets
1
Stable across source rows
Scale Comparison
Radius against the Sun
Current adopted radius: 0.95 R☉ (circles scaled linearly by radius)
Sun
1.0 R☉ baseline
K2-105
0.95 R☉
System Layout
Known planets
1 planets linked to this host
K2-105 b
Transit
◌
Discovery
2017
Period
8.27 days
Radius
3.40 R⊕
Mass
15.40 M⊕
Eq. Temp
805 K
K2-105 and Its Neptune-Like Planet
K2-105 is a K1 star located 646 light-years away. Its mass is 1.01 solar masses, its radius is 0.95 solar radii, and its temperature is 5430 K, which is cooler than the Sun's reported temperature. The star's age is a reported lower limit of 0.6 billion years. One planet orbits this host.
That planet is K2-105 b, a Neptune-like world discovered by transit in 2017. With a radius of 3.4 Earth radii, it is larger than Earth, and its mass of 15.4 Earth masses is also larger than Earth's. Its mean density is 2.16 g/cm³, 0.392 times Earth's. K2-105 b completes an orbit every 8.27 days.
Provenance
Underlying measurements and references
Evidence Summary
Rows
14
Stellar refs
14
System refs
1
Distancestable
Parallaxstable
Temperaturedisputed
Massdisputed
Radiusdisputed
Agestable
Luminositydisputed
Surface Gravitydisputed
Metallicitydisputed
Spectral Typestable
| ST TEFF | ST MASS | ST RAD | ST AGE | ST LUM | ST SPECTYPE | SY DIST | Stellar Ref | System Ref |
|---|---|---|---|---|---|---|---|---|
| — | — | 0.98 | — | — | — | 198.0 | Petigura et al. 2018 | TICv8 |
| — | — | — | — | — | K1 | 198.0 | Luo et al. 2018 | TICv8 |
| 5434 | 1.01 | 0.95 | 0.60 | — | — | 198.0 | Narita et al. 2017 | TICv8 |
| 5411.1 | 0.94 | 0.92 | — | -0.19 | — | 198.0 | TICv8 | TICv8 |
| 5373 | 0.94 | 0.91 | — | — | — | 198.0 | Howard et al. 2025 | TICv8 |
| 5464 | 0.99 | 0.91 | — | — | — | 198.0 | Livingston et al. 2018 | TICv8 |
| 5302.6 | — | 0.95 | — | -0.19 | — | 198.0 | Gaia DR2 | TICv8 |
| — | — | — | — | — | — | 198.0 | Pope et al. 2016 | TICv8 |
| 5475 | 0.96 | 0.91 | — | — | — | 198.0 | Mayo et al. 2018 | TICv8 |
| — | — | 0.95 | — | — | — | 198.0 | Kruse et al. 2019 | TICv8 |
| 5636 | — | 0.97 | 0.60 | — | K1 | 198.0 | Bourrier et al. 2023 | TICv8 |
| 5411.1 | — | 0.92 | — | — | — | 198.0 | ExoFOP | TICv8 |
| — | — | — | — | — | — | 198.0 | Barros et al. 2016 | TICv8 |
| 5636 | 1.05 | 0.97 | — | — | — | 198.0 | Castro-González et al. 2022 | TICv8 |