Temperature
5499 K
5431 to 5723
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Stellar HostProfile
Kepler-1644
Unclassified star • 629.3 pc
Records
8
literature rows
Planets
1
system count
References
9
distinct source labels
TIC: TIC 279917005
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
0.89 Msun
0.86 to 0.89
Radius
0.86 Rsun
0.82 to 0.90
Age
4.27 Gyr
single adopted value
Distance
629.3 pc
single adopted value
Planets
1
Stable across source rows
Scale Comparison
Radius against the Sun
Current adopted radius: 0.86 R☉ (circles scaled linearly by radius)
Sun
1.0 R☉ baseline
Kepler-1644
0.86 R☉
System Layout
Known planets
1 planets linked to this host
Kepler-1644 b
Transit
◌
Discovery
2016
Period
21.09 days
Radius
1.88 R⊕
Mass
—
Eq. Temp
—
Kepler-1644 b: A Super-Earth in a Distant System
Kepler-1644 is a star located 2050 light-years away, with one planet orbiting it. The host star is 4.27 billion years old, with a mass of 0.89 solar masses and a radius of 0.86 solar radii. Its reported temperature is 5500 K. The star's reported mass estimate is smaller than the Sun's, its reported radius estimate is smaller than the Sun's, and its reported temperature is cooler than the Sun's.
The system's only known planet, Kepler-1644 b, was discovered in 2016 by the transit method, in which a planet passing in front of its star from our viewpoint causes a small dip in observed brightness. Repeated dips help establish orbital periods. Kepler-1644 b completes an orbit every 21.1 days and has a radius of 1.88 Earth radii. Its reported radius estimate is larger than Earth's. That radius places it in the Super-Earth class, which reaches up to 2.5 times Earth's radius.
Provenance
Underlying measurements and references
Evidence Summary
Rows
8
Stellar refs
8
System refs
1
Distancestable
Temperaturedisputed
Massdisputed
Radiusdisputed
Agestable
Surface Gravitydisputed
Metallicitydisputed
| ST TEFF | ST MASS | ST RAD | ST AGE | ST LUM | ST SPECTYPE | SY DIST | Stellar Ref | System Ref |
|---|---|---|---|---|---|---|---|---|
| 5499 | 0.89 | 0.86 | 4.27 | — | — | 629.3 | Morton et al. 2016 | TICv8 |
| 5723 | 0.86 | 0.82 | — | — | — | 629.3 | Q1-Q17 DR25 KOI Table | TICv8 |
| 5431 | — | — | — | — | — | 629.3 | Gaia DR2 | TICv8 |
| 5722 | 0.86 | 0.82 | — | — | — | 629.3 | Q1-Q17 DR24 KOI Table | TICv8 |
| — | — | — | — | — | — | 629.3 | Q1-Q17 DR25 Supplemental KOI Table | TICv8 |
| 5722 | 0.86 | 0.82 | — | — | — | 629.3 | Q1-Q16 KOI Table | TICv8 |
| 5706.1 | — | — | — | — | — | 629.3 | TICv8 | TICv8 |
| 5489 | — | 0.90 | — | — | — | 629.3 | Latham et al. 2005 | TICv8 |