Temperature
5502 K
5339.3 to 5822
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Stellar HostProfile
Kepler-1257
Unclassified star • 1106.0 pc
Records
13
literature rows
Planets
1
system count
References
14
distinct source labels
TIC: TIC 272084528
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
0.90 Msun
0.90 to 1.00
Radius
0.87 Rsun
0.57 to 0.99
Age
4.37 Gyr
0.40 to 4.37
Distance
1106.0 pc
single adopted value
Planets
1
Stable across source rows
Scale Comparison
Radius against the Sun
Current adopted radius: 0.87 R☉ • circles scaled linearly by radius
Sun
1.0 R☉ baseline
Kepler-1257
0.87 R☉
System Layout
Known planets
1 planets linked to this host
Kepler-1257 b
Transit
◌
Discovery
2016
Period
2.67 days
Radius
1.52 R⊕
Mass
—
Eq. Temp
—
Kepler-1257 and Its Super-Earth
Kepler-1257 is a star located 3610 light-years away. It has one planet: Kepler-1257 b. The host star is 4.37 billion years old, has a mass of 0.9 solar masses, a radius of 0.87 solar radii, and a temperature of 5500 K. Its reported mass and radius estimates are smaller than the Sun's, and its reported temperature is cooler than the Sun's.
Kepler-1257 b is a Super-Earth discovered by transit in 2016, the same method that established its orbital period. It orbits every 2.67 days and has a radius of 1.52 Earth radii, larger than Earth's. Size classes are set by radius: an Earth-like planet stays within 1.5 times Earth's radius, while a Super-Earth reaches 2.5 times.
Provenance
Underlying measurements and references
Evidence Summary
Rows
13
Stellar refs
13
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 |
|---|---|---|---|---|---|---|---|---|
| 5371.0 | 0.93 | 0.99 | — | -0.14 | — | 1106.0 | TICv8 | TICv8 |
| — | — | — | — | — | — | 1106.0 | Q1-Q17 DR25 Supplemental KOI Table | TICv8 |
| 5339.3 | — | 0.93 | — | -0.20 | — | 1106.0 | Gaia DR2 | TICv8 |
| 5542 | — | 0.84 | — | — | — | 1106.0 | Q1-Q6 KOI Table | TICv8 |
| 5542 | 0.94 | 0.84 | — | — | — | 1106.0 | Batalha et al. 2013 | TICv8 |
| 5782 | 0.97 | 0.86 | 0.40 | — | — | 1106.0 | Q1-Q8 KOI Table | TICv8 |
| 5806 | 1.00 | 0.90 | — | — | — | 1106.0 | Q1-Q16 KOI Table | TICv8 |
| 5806 | 1.00 | 0.90 | — | — | — | 1106.0 | Q1-Q17 DR24 KOI Table | TICv8 |
| 5806 | 1.00 | 0.90 | — | — | — | 1106.0 | Q1-Q12 KOI Table | TICv8 |
| 5502 | 0.90 | 0.87 | 4.37 | — | — | 1106.0 | Morton et al. 2016 | TICv8 |
| 5542 | — | 0.57 | — | — | — | 1106.0 | Latham et al. 2005 | TICv8 |
| 5806 | 1.00 | 0.90 | — | — | — | 1106.0 | Q1-Q17 DR25 KOI Table | TICv8 |
| 5822 | — | 0.87 | — | — | — | 1106.0 | Berger et al. 2018 | TICv8 |