Temperature
6747 K
5868.5 to 6747
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Stellar HostProfile
Kepler-644
Unclassified star • 1318.0 pc
Records
14
literature rows
Planets
1
system count
References
15
distinct source labels
TIC: TIC 271669616
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
1.49 Msun
1.22 to 1.49
Radius
1.81 Rsun
1.49 to 1.84
Age
1.62 Gyr
1.62 to 3.58
Distance
1318.0 pc
single adopted value
Planets
1
Stable across source rows
Scale Comparison
Radius against the Sun
Current adopted radius: 1.81 R☉ (circles scaled linearly by radius)
Sun
1.0 R☉ baseline
Kepler-644
1.81 R☉
System Layout
Known planets
1 planets linked to this host
Kepler-644 b
Transit
◌
Discovery
2016
Period
3.17 days
Radius
3.15 R⊕
Mass
—
Eq. Temp
—
Kepler-644 and Its Neptune-Like Planet
Kepler-644 is a star 4300 light-years away with one known planet. The host star is 1.62 billion years old, has a mass of 1.49 solar masses, a radius of 1.81 solar radii, and a temperature of 6750 K. Its reported mass and radius estimates are larger than the Sun's, and its reported temperature is hotter than the Sun's. Solar masses and radii compare stellar mass and radius with the Sun.
The planet Kepler-644 b is Neptune-like, a size class that reaches 4 times Earth's radius. It was discovered by transit 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-644 b has an orbital period of 3.17 days and a radius of 3.15 Earth radii, which is larger than Earth's. Earth radii compare radius, not volume, and an orbital period is the time a planet takes to complete one orbit.
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 |
|---|---|---|---|---|---|---|---|---|
| 6432 | 1.34 | 1.58 | — | — | — | 1318.0 | Q1-Q17 DR25 KOI Table | TICv8 |
| 6540 | — | 1.77 | — | — | — | 1318.0 | Berger et al. 2018 | TICv8 |
| 5868.5 | — | 1.84 | — | 0.56 | — | 1318.0 | Gaia DR2 | TICv8 |
| 6420.7 | 1.29 | 1.83 | — | 0.71 | — | 1318.0 | TICv8 | TICv8 |
| 6747 | 1.49 | 1.81 | 1.62 | — | — | 1318.0 | Morton et al. 2016 | TICv8 |
| 6440 | 1.36 | 1.65 | — | — | — | 1318.0 | Q1-Q16 KOI Table | TICv8 |
| 6540 | 1.32 | 1.72 | 2.40 | — | — | 1318.0 | Fulton & Petigura 2018 | TICv8 |
| — | — | — | — | — | — | 1318.0 | Q1-Q17 DR25 Supplemental KOI Table | TICv8 |
| 6344 | 1.22 | 1.52 | 3.58 | — | — | 1318.0 | Q1-Q8 KOI Table | TICv8 |
| 6187 | — | 1.53 | — | — | — | 1318.0 | Batalha et al. 2013 | TICv8 |
| 6440 | 1.36 | 1.65 | — | — | — | 1318.0 | Q1-Q17 DR24 KOI Table | TICv8 |
| 6187 | — | 1.53 | — | — | — | 1318.0 | Q1-Q6 KOI Table | TICv8 |
| 6440 | 1.36 | 1.65 | — | — | — | 1318.0 | Q1-Q12 KOI Table | TICv8 |
| 6187 | — | 1.49 | — | — | — | 1318.0 | Latham et al. 2005 | TICv8 |