Temperature
3578 K
3471 to 3679
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Stellar HostProfile
Kepler-1439
Unclassified star • 225.4 pc
Records
12
literature rows
Planets
1
system count
References
13
distinct source labels
TIC: TIC 120578712
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: Morton et al. 2016 • System source: TICv8
Mass
0.46 Msun
0.40 to 0.49
Radius
0.43 Rsun
0.38 to 0.67
Age
4.07 Gyr
4.07 to 4.41
Distance
225.4 pc
single adopted value
Planets
1
Stable across source rows
Scale Comparison
Radius against the Sun
Current adopted radius: 0.43 R☉ • circles scaled linearly by radius
Sun
1.0 R☉ baseline
Kepler-1439
0.43 R☉
System Layout
Known planets
1 planets linked to this host
Kepler-1439 b
Transit
◌
Discovery
2016
Period
8.07 days
Radius
1.46 R⊕
Mass
—
Eq. Temp
—
Kepler-1439 b: An Earth-Sized World Around a Small Cool Star
Kepler-1439 is a star 735 light-years away with one known planet in orbit around it. The host star has an age of 4.07 billion years. It is smaller than the Sun, with a mass of 0.46 solar masses and a radius of 0.43 solar radii, and it is cooler than the Sun at a temperature of 3580 K.
The single known planet, Kepler-1439 b, was discovered in 2016 by the transit method, which detects the small dip in a star's brightness when a planet passes in front of it. The planet completes one orbit in 8.07 days. Its radius is 1.46 Earth radii, placing it in the Earth-like size class, since Earth-like planets stay within 1.5 times Earth's radius. This radius is larger than Earth's, though radius comparisons describe size rather than volume or composition.
Provenance
Underlying measurements and references
Evidence Summary
Rows
12
Stellar refs
12
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 |
|---|---|---|---|---|---|---|---|---|
| 3471 | 0.40 | 0.38 | — | — | — | 225.4 | Q1-Q16 KOI Table | TICv8 |
| 3679 | — | 0.44 | — | — | — | 225.4 | Berger et al. 2018 | TICv8 |
| 3511 | — | — | — | — | — | 225.4 | Gaia DR2 | TICv8 |
| 3578 | 0.46 | 0.43 | 4.07 | — | — | 225.4 | Morton et al. 2016 | TICv8 |
| 3679 | — | 0.67 | — | — | — | 225.4 | Latham et al. 2005 | TICv8 |
| 3679 | 0.49 | 0.67 | — | — | — | 225.4 | Q1-Q8 KOI Table | TICv8 |
| — | — | — | 4.41 | — | — | 225.4 | Gaidos et al. 2024 | TICv8 |
| 3548 | 0.44 | 0.45 | — | -1.54 | — | 225.4 | TICv8 | TICv8 |
| 3675 | 0.43 | 0.40 | — | — | — | 225.4 | Q1-Q17 DR25 KOI Table | TICv8 |
| 3471 | 0.40 | 0.38 | — | — | — | 225.4 | Q1-Q17 DR24 KOI Table | TICv8 |
| 3471 | 0.40 | 0.38 | — | — | — | 225.4 | Q1-Q12 KOI Table | TICv8 |
| — | — | — | — | — | — | 225.4 | Q1-Q17 DR25 Supplemental KOI Table | TICv8 |