Temperature
5382 K
5097.9 to 5480
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Stellar HostProfile
Kepler-638
Unclassified star • 991.2 pc
Records
14
literature rows
Planets
1
system count
References
15
distinct source labels
TIC: TIC 120420633
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
0.88 Msun
0.85 to 1.08
Radius
0.93 Rsun
0.93 to 2.32
Age
11.75 Gyr
7.24 to 14
Distance
991.2 pc
single adopted value
Planets
1
Stable across source rows
Scale Comparison
Radius against the Sun
Current adopted radius: 0.93 R☉ (circles scaled linearly by radius)
Sun
1.0 R☉ baseline
Kepler-638
0.93 R☉
System Layout
Known planets
1 planets linked to this host
Kepler-638 b
Transit
◌
Discovery
2016
Period
6.08 days
Radius
1.83 R⊕
Mass
—
Eq. Temp
—
Kepler-638 and Its Super-Earth
Kepler-638 is a star located 3230 light-years away, and it hosts one known planet. The star is 11.8 billion years old and has a mass of 0.88 solar masses, a radius of 0.93 solar radii, and a temperature of 5380 K. Its mass is smaller than the Sun's, and its temperature is cooler than the Sun's.
The planet, Kepler-638 b, was discovered by the transit method in 2016. A transit occurs when a planet passes in front of its star from our viewpoint, causing a small dip in observed brightness. Kepler-638 b orbits its star every 6.08 days and has a radius of 1.83 Earth radii, larger than Earth's. It is classified as a Super-Earth, a size class that reaches up to 2.5 times Earth's radius.
Provenance
Underlying measurements and references
Evidence Summary
Rows
14
Stellar refs
14
System refs
1
Distancestable
Parallaxstable
Temperaturedisputed
Massdisputed
Radiusdisputed
Agedisputed
Luminositydisputed
Surface Gravitydisputed
Metallicitydisputed
| ST TEFF | ST MASS | ST RAD | ST AGE | ST LUM | ST SPECTYPE | SY DIST | Stellar Ref | System Ref |
|---|---|---|---|---|---|---|---|---|
| 5446 | 0.85 | 1.59 | — | — | — | 991.2 | Q1-Q12 KOI Table | TICv8 |
| 5446 | 0.85 | 1.59 | — | — | — | 991.2 | Q1-Q16 KOI Table | TICv8 |
| 5382 | 0.88 | 0.93 | 11.75 | — | — | 991.2 | Morton et al. 2016 | TICv8 |
| 5320 | 1.08 | 2.16 | 7.24 | — | — | 991.2 | Fulton & Petigura 2018 | TICv8 |
| 5250 | — | 1.45 | — | — | — | 991.2 | Latham et al. 2005 | TICv8 |
| 5446 | 0.85 | 1.59 | — | — | — | 991.2 | Q1-Q17 DR24 KOI Table | TICv8 |
| 5250 | — | 1.69 | — | — | — | 991.2 | Batalha et al. 2013 | TICv8 |
| — | — | — | — | — | — | 991.2 | Q1-Q17 DR25 Supplemental KOI Table | TICv8 |
| 5097.9 | — | 2.32 | — | 0.52 | — | 991.2 | Gaia DR2 | TICv8 |
| 5320 | — | 2.20 | — | — | — | 991.2 | Berger et al. 2018 | TICv8 |
| 5460 | 0.91 | 1.35 | — | — | — | 991.2 | Q1-Q17 DR25 KOI Table | TICv8 |
| 5342.7 | 0.92 | 2.15 | — | 0.53 | — | 991.2 | TICv8 | TICv8 |
| 5250 | — | 1.69 | — | — | — | 991.2 | Q1-Q6 KOI Table | TICv8 |
| 5480 | 0.91 | 1.49 | 14 | — | — | 991.2 | Q1-Q8 KOI Table | TICv8 |