Temperature
4912 K
4843 to 4993
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Stellar HostProfile
K2-39
Unclassified star โข 307.5 pc
Records
10
literature rows
Planets
1
system count
References
11
distinct source labels
TIC: TIC 250977648
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 โข System source: TICv8
Mass
1.19 Msun
0.66 to 1.53
Radius
2.93 Rsun
0.74 to 3.88
Age
6.70 Gyr
3.09 to 6.70
Distance
307.5 pc
single adopted value
Planets
1
Stable across source rows
Scale Comparison
Radius against the Sun
Current adopted radius: 2.93 Rโ (circles scaled linearly by radius)
Sun
1.0 Rโ baseline
K2-39
2.93 Rโ
System Layout
Known planets
1 planets linked to this host
K2-39 b
Transit
โ
Discovery
2016
Period
4.61 days
Radius
6.28 Rโ
Mass
28.60 Mโ
Eq. Temp
โ
K2-39 and Its Jupiter-Like Planet
K2-39 is a star located 1000 light-years away. It is 6.7 billion years old and has a mass of 1.19 solar masses and a radius of 2.93 solar radii. Its temperature is 4910 K, cooler than the Sun's. One planet orbits this host.
That planet is K2-39 b, a Jupiter-like world discovered by transit in 2016. Its radius is 6.28 Earth radii, larger than Earth's, and its mass is 28.6 Earth masses, also larger than Earth's. It completes an orbit every 4.61 days, and its mean density is 0.637 g/cmยณ, 0.116 times Earth's.
Provenance
Underlying measurements and references
Evidence Summary
Rows
10
Stellar refs
10
System refs
1
Distancestable
Parallaxstable
Temperaturedisputed
Massdisputed
Radiusdisputed
Agedisputed
Luminositystable
Surface Gravitydisputed
Metallicitydisputed
| ST TEFF | ST MASS | ST RAD | ST AGE | ST LUM | ST SPECTYPE | SY DIST | Stellar Ref | System Ref |
|---|---|---|---|---|---|---|---|---|
| 4993 | 1.17 | 2.59 | โ | โ | โ | 307.5 | Crossfield et al. 2016 | TICv8 |
| 4881 | 0.66 | 2.97 | โ | โ | โ | 307.5 | Stassun et al. 2017 | TICv8 |
| 4915 | 1.38 | 3.08 | โ | โ | โ | 307.5 | Howard et al. 2025 | TICv8 |
| โ | โ | โ | โ | โ | โ | 307.5 | Schmitt et al. 2016 | TICv8 |
| 4911 | โ | 3.12 | โ | โ | โ | 307.5 | TICv8 | TICv8 |
| 4912 | 1.19 | 2.93 | 6.70 | โ | โ | 307.5 | Petigura et al. 2017 | TICv8 |
| 4881 | 1.53 | 3.88 | 3.09 | โ | โ | 307.5 | Van Eylen et al. 2016 | TICv8 |
| 4843 | โ | 0.74 | โ | โ | โ | 307.5 | Vanderburg et al. 2016 | TICv8 |
| 4911 | โ | 3.12 | โ | โ | โ | 307.5 | ExoFOP | TICv8 |
| 4860.0 | โ | 3.06 | โ | 0.67 | โ | 307.5 | Gaia DR2 | TICv8 |