Temperature
5925 K
5809 to 6147
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Stellar HostProfile
Kepler-1857
Unclassified star • 853.3 pc
Records
11
literature rows
Planets
1
system count
References
12
distinct source labels
TIC: TIC 184556217
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: Fulton & Petigura 2018 • System source: TICv8
Mass
0.95 Msun
0.82 to 1.17
Radius
1.17 Rsun
1.00 to 1.17
Age
7.94 Gyr
3.50 to 7.94
Distance
853.3 pc
single adopted value
Planets
1
Stable across source rows
Scale Comparison
Radius against the Sun
Current adopted radius: 1.17 R☉ (circles scaled linearly by radius)
Sun
1.0 R☉ baseline
Kepler-1857
1.17 R☉
System Layout
Known planets
1 planets linked to this host
Kepler-1857 b
Transit
◌
Discovery
2021
Period
8.94 days
Radius
1.96 R⊕
Mass
—
Eq. Temp
—
Kepler-1857 and Its Super-Earth
Kepler-1857 is a single-star system 2780 light-years away, and its only known planet orbits the star every 8.94 days. The host star is 7.94 billion years old, with a mass of 0.955 solar masses and a radius of 1.17 solar radii. That mass is smaller than the Sun's, while the radius is larger, and the star's temperature of 5930 K is hotter than the Sun's.
The system's lone planet, Kepler-1857 b, is a Super-Earth discovered by transit in 2021. A transit occurs when a planet passes in front of its star from our viewpoint, causing a small dip in observed brightness. The planet's radius is 1.96 Earth radii, which is larger than Earth's, and its orbital period is 8.94 days.
Provenance
Underlying measurements and references
Evidence Summary
Rows
11
Stellar refs
11
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 |
|---|---|---|---|---|---|---|---|---|
| 6074 | 0.87 | 1.00 | — | — | — | 853.3 | Q1-Q17 DR24 KOI Table | TICv8 |
| — | — | — | — | — | — | 853.3 | Q1-Q17 DR25 Supplemental KOI Table | TICv8 |
| 6074 | 0.87 | 1.00 | — | — | — | 853.3 | Q1-Q12 KOI Table | TICv8 |
| 5809 | — | 1.12 | — | — | — | 853.3 | Latham et al. 2005 | TICv8 |
| 6134 | 1.06 | 1.11 | 3.50 | — | — | 853.3 | Q1-Q8 KOI Table | TICv8 |
| 6074 | 0.87 | 1.00 | — | — | — | 853.3 | Q1-Q16 KOI Table | TICv8 |
| 5809 | 0.82 | 1.01 | — | — | — | 853.3 | Batalha et al. 2013 | TICv8 |
| 5809 | — | 1.01 | — | — | — | 853.3 | Q1-Q6 KOI Table | TICv8 |
| 6147 | 1.17 | 1.12 | — | 0.21 | — | 853.3 | TICv8 | TICv8 |
| 5925 | 0.95 | 1.17 | 7.94 | — | — | 853.3 | Fulton & Petigura 2018 | TICv8 |
| 6074 | 0.87 | 1.00 | — | — | — | 853.3 | Q1-Q17 DR25 KOI Table | TICv8 |